Aventon Abound SR Review 2026: 440 lb, Range and Fit

Aventon's compact cargo bike as its one listing prints it on October 8, 2026, its range and fit worked out from those rows, and two cargo bikes we sell like it: the Eunorau MAX-CARGO 2.0 and the Addmotor Graoopro.

By Milad Ghobadibeygvand, BScN (Western University, 2014), Redtail eBikes. Verified October 8, 2026. Part of our guide to all 16 Aventon models; the Pace 5 REC review and the Level 4 REC review cover two Aventons on the same 750 W rating and 733 Wh battery.

The Aventon Abound SR on paper: what Aventon prints

The Abound SR is Aventon's compact cargo bike: a 750 W rear hub, a 733 Wh battery and a 143 lb rear rack on a step-through frame with 20 × 3.0 inch tires, at 80 lb. It comes in one frame and one size, in Cobalt, Stealth and Haze, and Aventon's page calls it a "Compact cargo bike with added security features".

Each row below is Aventon's own, from the Abound SR page and its product record, read October 8, 2026.

Reviews and Aventon print the battery and the motor's peak differently, and both readings matter if you compare reviews.

Reviews from late 2024 and early 2025 give the pack as 705 or 708 Wh and the peak as 950 W (Electric Bike Review prints "705 wh" and "950 watts"; Electric Bike Report prints "708Wh" in its spec list and "720-Wh" in its text); Aventon's table, read October 8, 2026, prints 733 Wh and 1,188 W, and the range model on this page uses Aventon's current figures.

Fenders come fitted, by two accounts. Aventon's FAQ on the same page names the "Abounds" among the models that "come with pre-installed fenders and a rear rack", and Electric Bike Journal's review lists "the rear rack, fenders, rear wheel mesh guards and an e-lock kickstand" as included. The SR's own table names the rack, the kickstand lock and the mesh guards.

Price, pre-order and where to buy one

Aventon charges $1,899 for the Abound SR in all three colors, and on October 8, 2026 its page sold every one as a pre-order: "Pre-Order Now" over "Expected Ship Date: October 20, 2026". Two days earlier the page read the same, and its product record still flags each color available to order.

Each color's own record on Aventon's page, read October 8, 2026, carries pre-ordering and that date; the buy box shows it for the color selected.

Aventon's buy box offers financing "Starting at $93 /mo or 0% APR with Affirm", a spare battery at $499 and a fast charger at $259. The battery is shared: "your Abound SR battery will also work on the Aventure 3, Abound LR, Level 3, and Pace 4", in Aventon's words.

You can order from Aventon or through a shop. The page carries a "BUY AT A NEARBY BIKE SHOP" button and counts "1,800+ Bike Shops for maintenance, service, and repairs"; its terms read "2 Year Warranty from the date of purchase", "Lifetime Frame Warranty *with ebike registration" and "14-Day Returns".

What the Abound SR carries: one passenger, 143 lb on the rack

Aventon rates the Abound SR for 440 lb in total, rider, passenger and cargo together, with up to 143 lb of that on its rear rack, and its spec table says it will "Carry A Single Passenger". The page's description sells it for "bike pooling with a friend", and Electric Bike Review calls it "a great option for a single person, or a parent with a single child".

Work out your own load in two subtractions: your weight from 440 lb gives what is left for a passenger and cargo, and no more than 143 lb of that may ride on the rack.

Arithmetic on Aventon's two published limits, "Total Weight Limit 440 lbs" and "Rear Rack Weight Limit 143 lbs". Above 297 lb of rider, the total limit binds before the rack's.

The passenger parts are sold separately, and only some of Aventon's Abound parts fit the SR. Read in Aventon's own catalog on October 8, 2026:

Each part's own page and product record, read October 8, 2026 (the Passenger's Chair, the SR seat pad, the rear handlebar, the pegs, the Child Carrier Kit).

For a young child, Aventon's catalog points elsewhere. The Thule Yepp Nexxt 2 Maxi rack-mount child seat it sells at $269.95 appears in the Abound LR's buy box and is tagged for the Abound and Abound LR, not the SR, and the SR's own compatible-accessories collection lists no child seat. Before you buy an SR to carry a child, ask Aventon or a dealer which seat they will stand behind.

What a passenger costs on a hill has been timed. Electric Bike Report rode its secondary hill "with and without a 57-pound sandbag and a cargo basket on the rear rack": the sandbag slowed the throttle run "by 11 seconds (17%)" to 1:15 and the pedaling run "by 12 seconds (16%)" to 1:27. The range section sets those figures beside the model.

How far the Abound SR goes: range by speed, hill, load and cold

On level pavement a 180 lb rider gets about 46 miles from a full Abound SR pack at 15 mph on the throttle, about 31 at 20 mph and about 77 at 15 mph with easy pedaling. Load it to the 440 lb limit and the 15 mph throttle figure falls to about 35 miles; on a steady 8% grade at 10 mph, one rider on the throttle gets 9 to 10 miles.

Plan your own ride in three steps:

1. Start from your usual speed in the speed tables, pedaling or not.
2. Count the climbing: at 10 mph on the throttle, each 1,000 feet of gain costs about 132 to 149 Wh on a 4% grade and 139 to 175 Wh on an 8% one (hills).
3. Then scale for everything aboard and the air temperature, and budget on 75% of what you get.

Every figure is a steady ride computed from Aventon's own rows, a Bafang rear hub listed at Aventon's 36 V and 750 W for a 20-inch wheel, the rolling resistance of 273 commuters' tires and a cycling power model validated on the road. The arithmetic closes the section.

Miles on one charge with 180 lb aboard on level ground at 77 °F; the pale bars add 75 W of easy pedaling to the same ride.

How much range does speed cost on the Abound SR?

Going from 15 to 20 mph on the throttle costs about a third of the charge: about 68 miles at 10 mph, 46 at 15 mph and 31 at 20 mph. Pushing air takes power that rises with the cube of your speed, while the tires' share grows only in step with it.

Throttle alone with 180 lb on level ground at 77 °F, through the SR's shipped 20 mph. The last column holds a quarter of the pack back, the share a Karlsruhe Institute of Technology test bench measured a pedelec keeping in reserve; Aventon states no reserve figure for this bike.

Add an easy 75 W of your own and the 15 mph trip grows from 46 miles to 77. On your legs alone, 75 W moves this 80 lb bike at about 10.1 mph and 150 W at about 14.0 mph.

Miles from a full pack, 180 lb on level pavement. The 189-mile cell is the least certain on the page: at 150 W of rider power the motor barely works, and its efficiency at so light a load is not published anywhere this model draws from (Limitations, item 7).

Set the app's 25 mph pedal-assist ceiling (the class section) and the miles past 20 mph come fast off the pack.

Miles from a full pack with 180 lb aboard on level ground at 77 °F. Above 20 mph only pedal assist works; the throttle stays at 20.

Does shifting gears or pedaling stretch the Abound SR's battery?

Your legs stretch it and the gears do not. The motor is in the rear hub and turns with the wheel, so a lower gear changes only your cadence; the battery saves whatever share of the work your legs take on.

Watt-hours per mile for 180 lb aboard with the motor held to its 750 W rating; the hills table lets it use the 1,188 W peak.

The drivetrain still earns its keep. With Shimano's 12-32T eight-speed cassette behind a 52T chainring, top gear turns the cranks at about 71 rpm at 20 mph, and the lowest gear moves the bike about 6.4 mph at 60 rpm.

What does a hill cost the Abound SR's battery?

On a steady 8% grade at 10 mph on the throttle, one 180 lb rider gets 9 to 10 miles from a full pack, and the fastest the motor holds there is 15.5 to 17.1 mph. Each figure is a bracket: the motor the model borrows was published in two speed versions, which part ways on climbs and land within 3 miles of each other on level ground at 15 to 20 mph on the throttle (why).

180 lb aboard at 10 mph, the pack held to Aventon's 1,188 W peak and the motor to its 80 Nm.

Each range runs between the two versions of the comparable motor. The miles assume 10 mph; the right-hand column gives the top speed the throttle alone can hold with 180 lb.

Steeper than 10%, pedal. On a 12% grade the faster version holds 9.5 mph at most on the throttle and the slower one 12.5 mph, and with easy pedaling a full pack covers about 6 to 8 miles of it.

How much range does a passenger or a full rack take?

On flat ground, about 2 to 3 miles of the 15 mph figure per 50 lb you add; on climbs, much more: a full 440 lb load cuts the throttle's steady speed up an 8% grade to 3.4 to 8.3 mph. Count everything: Aventon's 440 lb limit includes you, a passenger and the rack.

Throttle only, full pack, 77 °F. From 330 lb the faster motor version cannot hold 10 mph on an 8% grade within its peak power, and from 380 lb neither can.

A passenger shows most on a climb: with 280 lb aboard, a rider and a child for instance, the throttle holds 10.3 to 13.1 mph up an 8% grade against 15.5 to 17.1 mph alone.

The fastest steady speed on the throttle, the pack held to its 1,188 W peak, capped at the 20 mph the bike ships with.

Rider, passenger and cargo together, on the throttle; each cell runs between the comparable motor's two versions.

The load effect has been measured on this bike. Electric Bike Report's sandbag added 17% to its throttle time and 16% to its pedaling time up a hill it calls "similar in length and difficulty to Hell Hole", the ⅓-mile climb with "an average grade of 12%" on its January 2025 method page.

Added time with 57 lb on top of a 180 lb rider, from the model's fastest steady speeds; the pedaling range covers 75 to 150 W from the rider. The reviewer publishes neither its rider's weight nor that hill's grade.

On a steady 8% grade the model lands where the measurement does, on the throttle and pedaling alike. The reviewer likens the hill to its 12% one, and at a steady 12% the model's penalty is larger, 26 to 64% on the throttle; either the hill averages less than 12% or the model overstates the penalty on steep grades, and without the hill's grade this page cannot say which (Limitations, item 8).

Electric Bike Report weighed its bike at 80.2 lb, and Electric Bike Review gives "Total Weight: 80.2 lbs"; against Aventon's 80 lb, a fifth of a pound moves no figure here.

What does cold weather do to the Abound SR's range?

In 32 °F air the 15 mph figure shrinks from about 46 miles to about 37, and in 14 °F air to about 33. A cold cell delivers less of its stored energy, and cold air is thicker to ride through.

Pack energy follows McMaster University's 0.5C discharge tests of an LG cell; bracketed figures span the other published cell data. Aventon's battery row says only "LG 21700 cells" (Limitations, item 5).

On the same page Aventon tells owners to "Store and charge the battery in a climate-controlled area, keeping it away from both extreme heat and cold". The SR's battery unlocks through the bike's display with no key, so on a cold morning keep it indoors and fit it just before you ride.

Do the tires and riding position change the Abound SR's range?

A slow-rolling tire takes about 6 miles off the 15 mph figure. Aventon lists a "20 x 3.0 urban tire with reflective sidewalls" and names no tire maker or model, so the table uses field measurements of everyday riders' own tires.

From coast-down trials of commuters on their own bikes (Tengattini and Bigazzi, 2018). Inflate to the pressure printed on the sidewall.

The drag figure is the same study's measurement of 37 upright riders on cruisers, the nearest match to the SR's high BMX-style bar. A rider leaning forward like the study's mountain bikers would gain about 2 miles at 15 mph and about 2 at 20.

What Aventon's 60 miles means as a ride

Translated for Aventon's 165 lb rider, "Up to 60 miles" is a steady 16.8 mph with easy pedaling, or about 12 mph on the throttle alone. The conditions sit in Aventon's footnote: "a rider weighing 165 lbs (75 kg) on a paved, flat road, in Eco Mode, with Ride Tune set to the default settings".

The steady level-ground speed at which the model spends the 733 Wh in exactly 60 miles at 77 °F; on the slower version of the motor, about 10.4, 15.9 and 18.7 mph.

The same footnote says actual range varies with "cadence", a pedaling term, so the middle column, with easy pedaling, is the closest reading of Aventon's test.

Twice, Electric Bike Report rode the battery to empty on paved paths around St. George, Utah, and it called one result "remarkable": "Our Turbo mode result of 34.6 miles closely matches the average of 33.8 miles", and "The SR's Eco mode result of 87.1 miles" beat its category average of 57.9. Its method page gives neither the speed nor the rider's weight for those runs.

Each row gives the steady speed on level ground that uses up all 733 Wh over that distance, with 180 lb aboard at 77 °F.

Both distances describe a rider pedaling at 14 to 23 mph, inside the bike's 20 mph and its 25 mph setting, so the reviewer and the model agree in kind; without the reviewer's speed and weight they cannot be matched mile for mile.

The range arithmetic, step by step

Divide the pack's energy by the energy each mile takes and you have the range; a mile takes the power for rolling, for air drag and for any climb, spread over your speed and grossed up for motor and battery losses. The power at the wheel follows the model Martin and colleagues validated on the road in 1998:

P = v × [ m × g × (Crr × cos θ + sin θ) + ½ × ρ × CdA × v² ]

Here v is your speed, m the mass of you, your load and the bike together, g gravity, θ the angle of the grade, Crr the tires' rolling resistance, ρ the density of the air and CdA the drag area of you and the bike.

Worked through for the 15 mph throttle ride, 180 lb on level ground:

1. Mass. 180 lb of rider and 80 lb of bike make 117.9 kg.
2. Rolling. 6.71 m/s × 117.9 kg × 9.81 × 0.0074 = 57.4 W.
3. Air. ½ × 1.184 × 0.64 × 6.71³ = 114.2 W.
4. At the wheel. 57.4 W + 114.2 W = 171.6 W.
5. The motor. Aventon names its motor's maker, Shengyi, and no model or efficiency, so the model uses Bafang's RM G0F0.750.D/DC, a rear gear hub listed at 36 V and 750 W for a 20-inch wheel, at the 80% efficiency Bafang gives as a floor; at 15 mph it works at 75.0% and draws 228.9 W from the battery.
6. The battery. At that current the pack loses 3.3% of its output inside itself, so the cells supply 236.9 W.
7. Per mile. 236.9 W ÷ 15 mph = 15.8 Wh each mile.
8. Range. 733 Wh ÷ 15.8 Wh = 46.4 miles from full; keep a quarter back and plan on 34.8.

Bafang's workbook lists that hub with two speed pairs. Only the faster one (490 rpm with no load, 420 at its rating) turns the SR's 21.98-inch wheel past the 25 mph Aventon allows, at 32.0 mph unloaded against 21.6 for the slower pair (330 and 290 rpm), so the faster pair runs every table.

The slower pair supplies the other end of each climbing bracket. On the flat and on the throttle it gives 43 miles at 15 mph and 31 at 20, within about 3 miles of the faster pair.

Will the Abound SR fit you? One size, 24 to 34 inch inseam

Aventon makes the Abound SR in one size for riders from 4'11" to 6'3", and its size tool pairs that with an inseam window of 24 to 34 inches; for tall riders, the inseam limit arrives first. Among surveyed adults at 6'0", 17 in 100 have an inseam inside that window, and at 6'3" none of the 56 do.

Check your fit in three steps:

1. Measure your inseam barefoot, floor to crotch, and compare it with Aventon's 24 to 34 inches.
2. Find your saddle height from that inseam.
3. Confirm it on the first ride with the heel test.

Aventon's size tool, read October 8, 2026, against the US Army's ANSUR II survey of 6,068 adults.

What saddle height does the Abound SR need?

Set by the usual formula, the saddle top of a typical 5'4" rider sits about 26.8 inches above the crank axle, and a typical 6'0" rider's about 31.6 inches. It uses the long-standing 109% rule: measure 109% of your inseam from the pedal axle with the crank parked along the seat tube, then subtract this bike's 165 mm (6.5 in) crank.

The middle 90% of inseams at each height in the US Army's ANSUR II survey; saddle figures for the median body at each height, the last two columns the published range of the formula. A measured inseam beats any row here.

Aventon prints no seatpost length or saddle range for the SR, so this page does not compute where the saddle tops out. Two reviewers found the limit on the road: Electric Bike Report's 5'11" rider "was not able to achieve full leg extension", and Electric Bike Review calls the stock post "a bit short for riders over 6'1 who want full leg extension".

That matches the inseam window. Of 100 surveyed adults at each height, this many have an inseam of 34 inches or less:

ANSUR II bodies at each height (56 at 6'3"), against the window Aventon's size tool prints.

Can I put both feet down on the Abound SR?

The frame is a step-through, but Aventon's geometry table prints no standover height, so this page computes no share of riders who clear it. The table runs from seat tube to trail, then gives the 4'11" to 6'3" rider range.

What decides a flat-footed stop on a step-through is the saddle at its lowest, and Aventon prints no seatpost length either. Electric Bike Report measured "6" of adjustment in saddle height" on its suspension post; if you are near the 4'11" floor, ask a dealer to lower the saddle for you before you buy.

How upright will I sit on the Abound SR?

Upright, and you can raise the bar a long way, but this page does not compute the lean: the BMX-style bar's rise, sweep and grip point are not published on Aventon's page. Its tables give a stack of 520 mm, a reach of 420 mm and a 70° seat angle, a 680 mm bar, and a quill stem "40mm length, and 140mm of vertical adjustment".

That stem is the fit tool to use. Electric Bike Report counts it as "5.5" of vertical adjustment in handlebar height", and its 5'11" rider found the bike "generally comfortable with an upright and relaxed riding position".

How much weight will rest on my hands?

This page does not compute hand load, because it depends on the grip position Aventon does not publish. What the tables do give is the 70° seat angle, the 680 mm bar and the stem's 140 mm of travel; grips set higher and closer move weight off your wrists and onto the saddle.

As a reference point, Carahalios (2015) found 15% of body weight going through the stem when riders on an ergometer held the brake hoods at 2 W/kg. A raised BMX-style bar sets the grips higher than a road bike's hoods; how much weight that moves off your hands depends on the grip point, which is not published.

The grips are "Lock-on ergonomic". If your hands go numb on a long ride, raise the quill stem first.

How do I set the saddle on the first day?

Raise the saddle until your heel rests on the pedal at the bottom of the stroke with the leg straight; riding on the ball of your foot then leaves the small knee bend the formula aims for. Then compare it with the saddle table.

1. Prop the bike against a wall, climb on, and bring one pedal to the bottom with your heel resting on it.
2. Slide the 30.9 mm seatpost until that leg is straight, and close the quick-release clamp.
3. Now ride with the ball of your foot on the pedal: at the bottom of each stroke the knee stays a little bent.
4. If your hips rock as you pedal, lower the saddle 5 mm at a time.

The post is sprung with 50 mm of travel, so set the height sitting on the saddle, as you ride it.

The fit formula, worked

Crank axle to saddle top = 1.09 × inseam − crank. Take the survey's median 5'8" rider, with a 32.6-inch inseam: 1.09 × 32.6 = 35.6 inches from pedal axle to saddle top, and less the 6.5-inch crank that leaves the saddle top 29.1 inches above the crank axle.

LeMond's 88.3% from the crank axle gives 28.8 inches for the same rider, close to the 109% rule, though Peveler and colleagues found it put the knee inside the recommended 25 to 35° of bend for only about half their riders. Across the range Ferrer-Roca et al., 2012 recommends, 106% to 110.4%, the same rider's figure runs from 28.1 to 29.5 inches.

The Mercer fit test

Every review here holds the bike against the same seven people, the Mercers, our editorial cast and fixed measuring stick. Each verdict below reads a figure Aventon prints, the share of surveyed adults at that person's height whose inseam fits Aventon's window (the fit chart), or the state-law table in our 50-state guide.

The inputs: Aventon's 4'11" to 6'3" rider window and 24 to 34 inch inseam window, its 440 lb total and 143 lb rack limits, one passenger, and Class 2 at 20 mph with an app setting to 25.

At 5'5" to 5'7", Ruth, Maya and Dana fit Aventon's one size at 95 to more than 99 in 100; at 6'1", 94 of 100 riders Jack's height outgrow its 34-inch inseam limit, so the bike to read for him is the Graoopro, which Addmotor sizes to 6'2". Ivy rides on the back, on a seat Aventon lists for the SR, and Cole's answer starts with his state's age rule.

Class 2 from the box, 25 mph in the app: where you can ride

Out of the box the Abound SR is a Class 2 e-bike that stops helping at 20 mph on the throttle and on pedal assist alike; Aventon's app can lift the pedal-assist limit to 25 mph, and the throttle never goes past 20. Aventon's page prints both halves: "Class 2 Ebike" in its class row and "Top Speed 20MPH (Adjustable to 25MPH)" in its highlight strip.

Aventon's support article reads: "Out of the box, the bike ships as a class 2 Ebike (20mph max for throttle and PAS) and specific models (as advertised) can be unlocked into a class 3 configuration (20mph max for throttle & 28mph max for PAS)." For the SR, the advertised figure is 25 mph, and Electric Bike Report confirms it: "Once paired with the Aventon app, users have the option to increase the bike's maximum PAS speed to 25 mph."

Which setting you may ride, and where, comes from your state's law and the path's own rules, whatever the app allows; our 50-state e-bike law guide quotes each statute.

Its state table also lists which riders and passengers must wear a helmet and who may ride as a passenger on a Class 3, which matters on a bike sold to carry one. Until you have read your state's rule, ride the SR at its shipped 20 mph.

On national park land the state's rule travels with you. Outside the Park Service's own provisions, 36 CFR 4.30(i) says "the use of an electric bicycle is governed by State law, which is adopted and made a part of this section", and e-bikes are barred "in locations not designated by the Superintendent".

A violation there is federal: 36 CFR 1.3 routes it to 18 U.S.C. § 1865(a), under which a person "shall be imprisoned not more than 6 months, fined under this title, or both". Each park's compendium says which classes it allows; for other federal land, see our public-land guide.

Security, the app and the 4G plan

The SR's selling point beyond cargo is security: an Aventon control unit with 4G and GPS that locates the bike, raises alarms and can shut the motor down remotely, free for the first year and paid after. Aventon's footnote says the 4G subscription is "included for the first year, beginning from the product service registration date", and "After the first year, a paid 4G connection subscription will be required to maintain access to these services."

What Aventon's Abound SR page lists, in its own words:

• Tracking and alarms. "GPS Location", "Geofencing" that works by "eliminating power and sending alerts if the bike leaves a designated area", "Report lost", "Remote shutdown" and an "Alarm and Motion sensor".
• The kickstand lock. It "keeps the bike securely parked by preventing it from being moved or rolled away while the kickstand is down".
• The battery. A "Cross-Model Keyless Battery System" that unlocks "directly through the bike's display".
• A startup password, set on the display, and over-the-air updates.
• Riding aids. Cruise Control, Sensor Switch between torque and cadence response, Ride Tune, and Hold Mode, which "keeps your bike from rolling backwards" for "up to 30 seconds at a time".
• Boost. "up to 120% of specced torque and peak power for up to 30 seconds at a time": 1,440 W.

Electric Bike Review reported the plan at "$20/year or $2/month" after the free year when it reviewed the bike in late 2024; Aventon's page prints no price for it.

How the motor feels is a rider's report, and Electric Bike Report gives one: the 36 V system let its rider "feel more of an active participant in the ride", and the throttle "took off with much more gusto" once it got going.

Buying one used? Ask the seller to remove the bike from their Aventon app account before you pay, and ask whether the 4G plan is still active, because tracking and remote shutdown stop without it.

Safety certificates and recalls

The Abound SR page links a UL Solutions certificate for the bike's electrical system, UL-US-2440621-3, that names the "abound SR" and the "abound LR", and a UL 2271 certificate for a battery pack. No recall in the CPSC's database names any Abound.

The first is issued to Ride Aventon Inc. under "QGNS - Electrical Systems for E-Bikes" and lists both Abound models by name. The second covers the battery as a recognized component, the form UL uses for a part built into a finished product; both send readers to UL's Product iQ "for additional information".

Searched on October 8, 2026, the CPSC's recall database holds a single recall titled with Aventon's name, the January 2024 Sinch.2 folding e-bike recall, whose remedy was a software update. Searched by title and by product name, no record names an Abound.

Abound SR or Abound LR?

The two Abounds share a motor, a battery and a 440 lb limit; the LR is $100 more, 8 lb heavier and 7 inches longer between the axles, and Aventon sells it to carry two children where the SR carries one passenger. Both rows below are Aventon's own, read from the SR page and the LR page on October 9, 2026.

Aventon's spec and geometry tables for each; the LR's "Carry two children" is from its page's feature text.

The LR's longer deck is what takes a second child. Its passenger parts reflect that: a Child Carrier Kit with a handrail and long seat pad, a rack extension bracket that "extend[s] the total rear rack length by 120mm to accomodate a second child seat", and a Thule child seat in its buy box, none of them listed for the SR.

Two cargo bikes we sell like it

Two cargo bikes on our shelf share the Abound SR's plan, a 750 W rear hub carrying a passenger or a load on a long rack: the Eunorau MAX-CARGO 2.0 at $1,699 and the Addmotor Graoopro at $1,499. On October 8, 2026 both were for sale at their makers and on our store, at the same price in each place, and both ship free.

The MAX-CARGO 2.0 is the one for children, by its maker's own words; the Graoopro carries the most weight on the lightest frame of the three (the comparison tables). Under each card, a table lines it up against the SR.

Eunorau's own photograph of the MAX-CARGO 2.0 in Green; it also comes in White.

Both makers' own pages, read October 8, 2026; range from this page's model and our MAX-CARGO 2.0 review's. Eunorau's geometry chart gives the bike's weight as 78 lb and its spec table as 85 lb; this table uses the spec table.

Addmotor's own photograph of the Graoopro in Neptune Blue, the one color for sale on our store on October 8, 2026.

Both makers' own pages, read October 8, 2026; Addmotor's range claim is for its lowest assist level, Aventon's for a 165 lb rider in Eco.

Which to choose: the MAX-CARGO 2.0 if you are carrying children, since Eunorau says it holds two, and it brings hydraulic brakes like the SR's and a second-battery option, for $200 less.

The Graoopro if the load is cargo and the days are long: 450 lb on a 72 lb bike and a 48V 20Ah pack, for $400 less. The Abound SR itself if you are under 5'2", since both of ours start at 5'2" or above, or if you want its 4G security, a 25 mph setting and a dealer to service it.

Buying a MAX-CARGO or a Graoopro from us

Shipping to the lower 48 is free on both, and one team at support@redtailebikes.com takes your sizing and passenger questions before the order and your repair claims after it. Our shipping policy prepares and dispatches orders within 1 to 3 business days, and most e-bikes arrive within 5 to 10 business days of dispatch.

Decide the size and the passenger setup before shipping, because our refund policy accepts a change-of-mind return only while the bike is unopened in its factory-sealed packaging and requested within 72 hours of delivery, and it charges a 15% restocking fee plus return shipping.

Green flags, and who the Abound SR fits

Green flags, each from the record:

• A 750 W motor with 80 Nm and a 1,188 W peak, and a 30-second Boost to 1,440 W (specs).
• A 440 lb total limit and a 143 lb rack, with a seat kit for one passenger (cargo).
• A compact cargo frame: 80 lb, on a 45-inch wheelbase, 7 inches shorter than the Abound LR's (SR or LR).
• Hydraulic brakes with a 203 mm rear rotor (specs).
• An independent 87.1 miles in its lowest assist and 34.6 in its highest (Aventon's 60 miles).
• A measured load penalty on a hill that the model matches at 8% (load).
• 4G tracking, a kickstand lock and a keyless battery (security).
• A UL 2849 certificate naming the Abound SR, and no federal recall naming an Abound (safety).

Who it fits, and who should read on:

Frequently asked questions

How much does the Aventon Abound SR cost?

$1,899 at Aventon on October 8, 2026, in Cobalt, Stealth and Haze, with no struck price; all three were on pre-order to ship October 20. The Abound LR is $1,999. On our shelf, the Addmotor Graoopro is $1,499 and the Eunorau MAX-CARGO 2.0 $1,699.

Is the Aventon Abound SR worth it?

For one rider plus one passenger who wants 4G tracking, a kickstand lock and a dealer nearby, yes: Electric Bike Report calls it "high-tech, practical, and simply cool" and measured 87.1 miles in its lowest assist. For two children, or for cargo at a lower price, read the alternatives.

How much does the Aventon Abound SR weigh?

80 lb by Aventon's table, against a 440 lb total limit for rider, passenger and cargo and 143 lb on the rack. Electric Bike Report weighed it at 80.2 lb, and Electric Bike Review gives the battery as 8.6 lb.

What class is the Aventon Abound SR?

It ships as a Class 2: the class row on Aventon's page reads "Class 2 Ebike", and both the throttle and pedal assist stop at 20 mph. In the app, pedal assist can go to 25 mph ("Adjustable to 25MPH"), the setting Aventon's support article calls a class 3 configuration; read your state's rule in our state law guide first.

Can the Aventon Abound SR be unlocked to go faster?

Only on pedal assist, and only to 25 mph. Aventon's strip reads "Top Speed 20MPH (Adjustable to 25MPH)", and Electric Bike Report says the app lets users "increase the bike's maximum PAS speed to 25 mph"; the throttle stays at 20. In this page's model, a full pack lasts about 25 miles at 25 mph on level ground with easy pedaling for a 180 lb rider.

How far can the Aventon Abound SR go on one charge?

"Up to 60 miles", says Aventon, for a 165 lb rider in Eco on a paved, flat road. For 180 lb on level ground with the full 733 Wh, the model gives about 46 miles at 15 mph on the throttle, 31 at 20 mph and 77 at 15 mph with easy pedaling; at the 440 lb limit, about 35 at 15 mph (range).

Does the Aventon Abound SR have a throttle?

Yes: an "Aventon LH Handlebar Mounted" throttle by Aventon's table, working to 20 mph in either setting, plus Cruise Control. On the throttle alone, a full pack computes to about 68 miles at 10 mph and 46 at 15 mph for 180 lb on level ground.

Can the Aventon Abound SR carry an adult passenger?

It is rated for one passenger: Aventon's table reads "Carry A Single Passenger", and its description sells the bike for "bike pooling with a friend". The passenger seat parts and the rack are each rated 143 lb, inside a 440 lb total that includes you; a 180 lb rider has 260 lb left (cargo).

Can the Aventon Abound SR carry two kids?

Aventon rates the SR for a single passenger and sells the Abound LR for "two children". On our shelf, Eunorau says the MAX-CARGO 2.0 "can hold 2 children", at $1,699 (compare).

Will a child seat fit the Aventon Abound SR?

Aventon's catalog, read October 8, 2026, does not list one for it: the Thule Yepp Nexxt 2 Maxi child seat it sells is tagged for the Abound and Abound LR, and the listings for its Child Carrier Kit and both handrails say they are not compatible with the SR. The SR's own passenger parts are a Passenger's Chair, a seat pad, a rear handlebar and pegs; ask Aventon or a dealer before fitting a child seat.

What is the difference between the Aventon Abound SR and LR?

The same motor, battery and 440 lb limit; the LR costs $100 more, weighs 88 lb against 80, and its wheelbase is 52 inches against 45. Aventon sells the LR to "Carry two children" and the SR to "Carry A Single Passenger" (the comparison).

How long is the Aventon Abound SR?

Aventon prints no overall length for the SR; its geometry table gives a 1,151.5 mm (45 in) wheelbase and a 610 mm (24 in) top tube, against the Abound LR's 1,332 mm (52 in) wheelbase (Aventon's tables).

What size rider fits the Aventon Abound SR?

Aventon's size tool says 4'11" to 6'3" with an inseam of 24 to 34 inches. Among surveyed adults at 6'0", 17 in 100 have an inseam that short, and two reviewers found the post short for tall riders; a 5'8" rider's saddle sits about 29.1 inches above the crank axle (fit).

How big is the Aventon Abound SR battery, and how long does it take to charge?

36 V, 20 Ah and 733 Wh of LG 21700 cells by Aventon's table, on an "Aventon 4A 42V" charger; Electric Bike Report puts a full charge at "about five hours". Aventon's spare pack is $499 and fits several of its models.

Is the Aventon Abound SR waterproof?

Aventon's answer: the bike is built to "the IPX5 water-resistant standard", which lets you "ride in light to moderate rain or through small puddles", but "IPX5 does not mean waterproof" and it should not be pressure-washed. The table rates the bike IPX5 and the components IPX6.

How do you lock the Aventon Abound SR?

Three ways, by Aventon's page: the kickstand's e-lock "preventing it from being moved or rolled away while the kickstand is down", the keyless battery that unlocks "directly through the bike's display", and a startup password; with the 4G plan, geofencing and remote shutdown. Add a physical lock for a long stop.

What else compares with the Aventon Abound SR?

In Aventon's line, the Abound LR at $1,999 for two children. On our shelf, the Eunorau MAX-CARGO 2.0 at $1,699, a 750 W long-tail Eunorau says holds two children, and the Addmotor Graoopro at $1,499, 450 lb on 72 lb; both were for sale on October 8, 2026. Comparing Lectric's cargo bike instead? Our XPedition 2.0 review sets it beside both of ours.

The bottom line

The Abound SR is a compact, well-secured cargo bike for one rider and one passenger, and a dealer can put you on it before you pay $1,899. It carries 440 lb in all, computes to about 46 miles at 15 mph on the throttle for 180 lb, fits riders whose inseam is 24 to 34 inches, and was on pre-order to ship October 20 when we read it.

If you are under 5'2", or want Aventon's 4G security and a dealer, buy the SR, and check your inseam against its window first. If you are carrying two children, order the MAX-CARGO 2.0 at $1,699; for heavy cargo on a lighter bike, the Graoopro at $1,499. Both ship free.

Corrections: write to support@redtailebikes.com. Both pick photographs are the makers' own, only cropped and scaled; every chart is drawn from this page's computed figures.

Image credit: the cover photographs were composed on Playcut (playcut.ai): a graphite paper studio generated with Nano Banana Pro, with the Eunorau MAX-CARGO 2.0 and the Addmotor Graoopro each in its maker's own studio photograph, cut out from its backdrop and placed at one uniform scale, nothing on either bike redrawn or recolored. The floor shadows and the type were added by Redtail eBikes; the studio was generated and is not a real room.

Limitations

1. Steady rides only. Every range figure assumes one constant speed on one constant grade; real trips with wind, traffic stops and restarts use more.
2. A borrowed motor. Aventon names its motor's maker, Shengyi, but no model, efficiency or speed curve, so the tables run on a stand-in: Bafang's rear hub listed at 36 V and 750 W for a 20-inch wheel, taken at its 80% efficiency floor.
3. Two versions of that motor. The workbook gives that motor two speed pairs that diverge on hills, which is why the climbing figures come as brackets.
4. The battery figure. Aventon's table prints 733 Wh; reviews from late 2024 and early 2025 print 705, 708 or 720 Wh. The model uses Aventon's current figure; at 708 Wh every range would be about 3% shorter.
5. Cell temperature. The cold rows treat the pack as being at air temperature and borrow an LG 18650 cell's discharge data, since Aventon gives no model number for its LG 21700 cells; a battery brought out from indoors starts warmer.
6. The tires. With no tire make or model in Aventon's table, rolling resistance comes from coast-down tests of commuters' own tires, spread included.
7. Light motor loads. If you supply most of the power, the motor idles at loads where no source used here publishes its efficiency, so the 150 W cells at 15 mph carry the most doubt.
8. The reviewer's measurements. Electric Bike Report gives distance and assist level for its range runs but not speed or rider weight, and gives its loaded hill's times but not its grade or its rider's weight; the model can show which conditions match, not confirm one.
9. Boost and the sensor modes. No row uses the 30-second Boost: the pack is capped at its 1,188 W peak, and your pedaling counts as watts in either sensor mode.
10. The reserve. The 25% reserve comes from a Karlsruhe test bench on a different pedelec; Aventon publishes none for the SR.
11. The survey's bodies. The fit tables use the US Army's ANSUR II: 6,068 personnel aged 17 to 58, measured between 2010 and 2012, not the general public; the 6'3" row rests on 56 people. Your own inseam decides your row.
12. The knee range. The saddle formula targets 25 to 35° of knee bend at the bottom of the stroke, the range the literature recommends; comfort or an old injury can overrule it, so trust the heel test and how it feels.
13. What Aventon does not print. No standover height, seatpost length, saddle range or grip position is published for the SR, so the page computes no standover share, saddle limit, lean or hand load.
14. The certificates' scope. Both certificates leave the full product list to UL's Product iQ, which needs an account; this page did not read those listings.
15. Child seats. The catalog reading in the cargo section covers what Aventon lists and tags; whether a third-party seat fits the SR's rack is a question for Aventon or a dealer.
16. Prices and stock change. Aventon's price and ship date, Eunorau's, Addmotor's and ours were read October 8, 2026. Any of them can change.

This page expires when Aventon reprices, ships or relists the Abound SR or changes its tables, when Eunorau or Addmotor changes the price or stock of a pick, or on January 8, 2027, whichever comes first; each triggers a re-check before republishing.

Source register

The documents behind this review, their tier under our sourcing rules, what each supports and when it was read.

References

Every document cited on this page, numbered, with its publisher and the date it was retrieved.

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4. Ride Aventon Inc., Aventon Rear Seat Pad - Abound SR. aventon.com. Retrieved October 8, 2026.
5. Ride Aventon Inc., Aventon Rear Handlebar. aventon.com. Retrieved October 8, 2026.
6. Ride Aventon Inc., Aventon Pegs - Abound SR. aventon.com. Retrieved October 8, 2026.
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15. 36 CFR 4.30, Electric bicycles, paragraph (i). eCFR. Retrieved October 4, 2026.
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27. Ferrer-Roca, V. and colleagues, Influence of saddle height on lower limb kinematics in well-trained cyclists: static vs. dynamic evaluation in bike fitting, 2012, abstract. PubMed. Retrieved September 25, 2026.
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29. Carahalios, A., An Analysis of the Bicycle-Rider Interface Forces in Stationary Road Cycling, University of Colorado, 2015. CU Scholar. Retrieved September 25, 2026.
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