YVY K16 1500W Fat Tire Electric Bike, 16-Inch Wheels
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YVY K16 1500W Fat Tire Electric Bike, 16-Inch Wheels
Same power, smaller wheels. The K16 is the one bike here YVY sizes for riders under 5 ft 4 in.
The K16 is the small-wheel bike in YVY's range at $749: the same 1500W motor and 48V 20Ah battery as the K20, but on 16x4.0 wheels instead of 20-inch, with mechanical disc brakes. YVY recommends it for riders from 5 ft 2 in, the lowest starting height in the line.
- 1500WMotor, as rated
- 960Wh48V x 20Ah battery
- 16 x 4.0 inWheels
- 5 ft 2 inLowest rider height
- 330 lbMaximum load
Who the K16 is for
Buy it if
- Shorter riders. YVY recommends this bike from 5 ft 2 in, two inches lower than every other model in the range
- Riders who want the K20's 1500W motor and 960Wh pack in a physically smaller bike
- Tight storage — smaller wheels make a meaningfully shorter bike to get through a door or into a truck bed
- Stop-start riding: smaller wheels spin up faster, which suits short urban hops more than long open roads
Look elsewhere if
- You are tall. YVY's recommended range tops out at 6 ft 0 in here against 6 ft 2 in on the 20-inch bikes
- You ride rough ground at speed — a 16-inch wheel drops into potholes a 20-inch wheel rolls over, whatever the tire width
- You need YVY's range figures to agree. This page publishes its pure-electric and pedal-assist ranges two different ways
- You want hydraulic brakes: this model is specified with mechanical discs, like the K20 Lite
16 x 4.0 — the reason this bike exists
Every other bike YVY sells rides on 20 x 4.0 wheels. This one drops to 16 inches while keeping the 4.0-inch width, which lowers the whole bike and shortens it. That is what lets YVY recommend it from 5 ft 2 in rather than 5 ft 4 in. The trade is real: a smaller wheel has a worse angle of attack on potholes and edges, so it is a better city bike than a rough-ground bike.
The K20's full 1500W, unchanged
YVY rates this hub at 1500W with 85 N·m of torque and a 35-degree climbing claim — identical to the K20's figures. Smaller wheels with the same motor means more torque at the rim, which is why this bike feels quick off the line. It also means the same legal position: 1500W is double the 750W ceiling in the federal low-speed electric bicycle definition.
960Wh, and a charging spec with a real number in it
The 48V 20Ah pack is the same 960 Wh as the K20's, by our arithmetic from YVY's volts and amp-hours. This page also gives the most specific charging figure YVY publishes anywhere: 4 to 6 hours at 3A. Elsewhere in the range they quote hours without an amperage, so this is the one page where you can actually check the claim.
5 ft 2 in to 6 ft 0 in, 330 lb all-in
YVY's FAQ gives a recommended height of 5.2 to 6.0 feet for this model, against 5.4 to 6.2 for the 20-inch bikes. If you are near either end, that two-inch shift is the whole reason to choose between them. The 330 lb maximum load is unchanged and, as everywhere in this range, it counts rider plus cargo together.
Where this bike sits in US law
Bikes in this power class raise one question before any other, so here is the statute rather than a summary of it. Federal law defines the category this way:
the term “low-speed electric bicycle” means a two- or three-wheeled vehicle with fully operable pedals and an electric motor of less than 750 watts (1 h.p.), whose maximum speed on a paved level surface, when powered solely by such a motor while ridden by an operator who weighs 170 pounds, is less than 20 mph.
15 U.S.C. § 2085(b) (Pub. L. 107–319, § 1, Dec. 4, 2002, 116 Stat. 2776). Retrieved 2026-08-25 from the U.S. Government Publishing Office and confirmed word for word against Cornell's Legal Information Institute the same day.
YVY publishes this bike's motor as 1500W brushless (YVY's rating) and its top speed as 28+ mph, as printed by YVY ("28+++ mph"). Set those figures against the threshold above and you can see for yourself that the manufacturer's own numbers fall outside the federal low-speed electric bicycle definition.
What that means in practice is decided by your state, not by us. Many states apply moped, motor-driven cycle or off-highway vehicle rules to machines above the federal threshold, and those rules can reach registration, insurance, licensing, helmet requirements and which paths and trails you may use. Some states set their own wattage ceilings that differ from the federal one. We cannot tell you how your state treats this bike, and we are not going to guess: check before you ride on any public road, bike path or trail.
Start here: our state-by-state e-bike law guide. Current as of 2026-08-25; state law changes, so re-check yours before relying on it.
The honest ledger
Green flags
- Full 1500W motor and the full 48V 20Ah (960Wh) pack — YVY did not shrink the powertrain to match the wheels
- The only bike in YVY's line sized for riders from 5 ft 2 in, which is a genuine gap-filler in a range built around one frame
- Charging spec is the most precise YVY publishes anywhere: 4-6 hours at 3A, with the amperage actually stated
- Same 330 lb load ceiling as the larger bikes despite the smaller wheels
Red flags
- YVY's page contradicts itself on both range figures: the bullets say 50 miles throttle and 75 pedal-assist, the FAQ on the same page says 30 and 50
- Mechanical disc brakes on a bike YVY rates at 1500W and 28+ mph — the same motor the K20 pairs with hydraulic brakes
- The URL says q16 and the page says K16. A small thing, but it is the kind of inconsistency that makes a spec sheet harder to trust
- Certification does not cover this bike. YVY links an EN 15194:2017 test report from every page, but that report names model FM-002/CDDA20, a cargo electric bicycle, and no UL 2849 or UL 2271 certification is published for anything in the range
How the K16 compares
All figures are YVY's own published specs, read from each model's archived product page on 2026-08-25. A dash means YVY publishes no figure for that model.
| Spec | K16 | K20 | K20 Lite | K20 Pro |
|---|---|---|---|---|
| Price | $749 | $769 | $659 | $1,399 |
| Motor | 1500W brushless | 1500W brushless rear hub | 1000W brushless rear hub | Dual brushless motors — wattage not published by YVY |
| Battery | 48V 20Ah removable lithium-ion | 48V 20Ah removable lithium-ion | 48V 15.6Ah removable lithium-ion (see notes — YVY also publishes 15Ah) | Two 52V 20Ah removable lithium-ion packs (52V 40Ah total) |
| Battery energy | 960 Wh | 960 Wh | 749 Wh | 2,080 Wh |
| Top speed | 28+ mph, as printed by YVY ("28+++ mph") | 28+ mph, as printed by YVY ("28+++ mph") | 28+ mph in the bullets, 30 mph in the FAQ | 28+ mph, as printed by YVY ("28+++ mph") |
| Range (claimed) | Up to 75 miles in the bullets, up to 50 miles in the FAQ | Up to 75 miles, claimed | Up to 60-80 miles in the bullets, up to 50 miles in the FAQ | Up to 180 miles, claimed |
| Brakes | Mechanical disc | Hydraulic dual disc | Dual mechanical disc | Hydraulic dual disc |
| Tires | 16 x 4.0 in fat | 20 x 4.0 in fat | 20 x 4.0 in fat | 20 x 4.0 in fat |
| Maximum load | 330 lb | 330 lb | 330 lb | 330 lb |
Source: each model's page on yvyebike.com, archived 2026-08-25. — = not published by YVY for that model.
Full specifications
| Motor | 1500W brushless (YVY's rating) |
| Torque | 85 N·m |
| Battery | 48V 20Ah removable lithium-ion |
| Battery energy | 960 Wh (our arithmetic: 48V x 20Ah) |
| Charging time | 4-6 hours at 3A |
| Top speed | 28+ mph, as printed by YVY ("28+++ mph") |
| Throttle-only range | Up to 50 miles in the bullets, up to 30 miles in the FAQ (see notes) |
| Pedal-assist range | Up to 75 miles in the bullets, up to 50 miles in the FAQ (see notes) |
| Wheels and tires | 16 x 4.0 in fat |
| Brakes | Mechanical disc |
| Suspension | Reinforced front fork and rear shock absorber |
| Drivetrain | 7-speed |
| Riding modes | Pure electric, pedal assist, pedal |
| Display | Multi-function LCD |
| Climb rating | Up to 35 degrees, claimed |
| Water resistance | "IP5", as printed by YVY (not a complete IP code) |
| Maximum load | 330 lb |
| Recommended rider height | 5 ft 2 in - 6 ft 0 in |
| Lighting | LED headlight and tail light |
| Included | 7.2 in phone holder, storage box |
| Assembly | 90% pre-assembled |
| Weight | Not published by YVY |
| Certification | No UL 2849 or UL 2271 certification published. YVY links an EN 15194:2017 test report sitewide, but it covers model FM-002/CDDA20, a cargo e-bike — not this model |
| Motor warranty | 1 year (motor, battery, charger) |
Specifications as published by YVY at yvyebike.com/products/yvy-q16-1500w-fat-tire-electric-bicycle, archived 2026-08-25. YVY publishes no specification table for any of its bikes, so every figure above was read out of the copy on that page and the sentence behind each one is on file. Watt-hour totals are our arithmetic and are marked as such. Found an error? Email support@redtailebikes.com.
How to read this spec sheet
Manufacturer pages contain marketing, and marketing sometimes disagrees with the marketing an inch below it. Rather than quietly pick numbers, here is every place YVY's own page disagrees with itself for this model, every figure it leaves out, and what we did about each:
- Both range rows carry two figures because YVY's page states them twice, differently. The bullet list says "up to 50 miles in pure electric mode and up to 75 miles in pedal assist mode"; the FAQ lower down the same page says 30 and 50. We print both and adopt neither.
- The product handle on YVY's own URL reads q16 while the page title and body both read K16. We use K16, the name printed on the page.
- The 16-inch wheel size is stated twice on the page, in the bullet heading and in the body text, so it is the one geometry figure here that is unambiguous.
- Battery energy in watt-hours is our arithmetic: 48 volts x 20 amp-hours = 960 Wh.
- "IP5 waterproof" is reproduced as printed. A complete IP code needs two digits or an X placeholder, and we do not guess which was meant.
- YVY publishes no specification table for any bike. Every figure here was read out of marketing prose, with the sentence behind each recorded in research/yvy/specs_20260825.json.
- YVY links two PDFs from every page: an EN 15194:2017 test report (report ATS240329142LR, issued 2 April 2024 by Shenzhen ATS Testing Technology, for model FM-002/CDDA20, a cargo electric bicycle) and the EUIPO trade mark certificate for "Ridstar". Neither covers this model. We say so rather than let a sitewide certificate imply cover it does not give.
What we counted
We pulled YVY's entire live catalogue on 2026-08-25 — all 46 published listings — and worked out what is actually on sale. Of 13 bike listings, only 7 are distinct bikes: 6 are the same machines listed a second time, which we proved from byte-identical descriptions, shared image files and, in three cases, by opening the photographs. Six of the thirteen bike listings are the same bikes listed twice — proven by byte-identical descriptions, shared image files, and in three cases by opening the photographs. The duplicates are priced $30–$550 above the merchandised listing of the same bike. We list one page per bike, priced against the listing YVY actually merchandises.
Redtail original analysis, counted from YVY's public storefront feed and collection endpoints on 2026-08-25; every price cross-checked against a second, independently fetched endpoint (46 of 46 listings agree across two independently fetched endpoints). Availability moves; email support@redtailebikes.com for anything not shown here.
Warranty
| Component | Coverage |
|---|---|
| Motor | 1 year from the original owner's receipt or purchase date, whichever is later |
| Battery | 1 year from the original owner's receipt or purchase date, whichever is later |
| Charger | 1 year from the original owner's receipt or purchase date, whichever is later |
| Frame and other components | Not separately stated in YVY's published warranty terms |
| Inbound and outbound repair shipping | Covered by YVY inside the warranty period |
What it covers
Defects in hardware or firmware under regular use during the warranty period. YVY states it will repair or replace, at no charge, a product or part that proves defective because of hardware malfunction under regular use and maintenance.
What you must do
- Keep proof of purchase — YVY excludes claims with no associated purchasing proof, invoice or receipt
- Report the fault inside the 1-year window; YVY dates coverage from receipt or purchase, whichever is later
- Keep the original packaging for a period after delivery, which YVY asks for directly in its product listings
Not covered
- Conditions, malfunctions or damage not resulting from defects in hardware or firmware
- Claims with no purchase proof, invoice or receipt, and no authorised dealer confirmation
- Return shipping when the product is found to have no quality issue, or is confirmed working by YVY's after-sales engineers
- Faults reported after the warranty period, which YVY offers to resolve at material cost instead
YVY Limited Warranty issued by YVY Bikes, as published on its warranty page. One caveat worth knowing: that page lists its “Warranted Products” as the Q20, Upgraded Q20 and Q20Pro — model names that do not appear on YVY's current storefront. The 1-year motor, battery and charger term above is therefore taken from this bike's own product listing, which states it directly. File with Redtail, not with the manufacturer: we are the merchant of record on this order and we open and carry the warranty claim on your behalf.
Shipping, returns & support
Shipping
Free shipping on every electric bike within the contiguous United States (lower 48).
Orders are prepared and dispatched within 1–3 business days. Most e-bikes arrive within 5–10 business days after dispatch, depending on location.
Ships via trusted parcel and freight carriers — UPS, FedEx, and LTL freight for larger items — with tracking emailed at dispatch.
On delivery
Inspect your shipment at delivery. Damage, defects, or incorrect items must be reported with photos within 48 hours; claims submitted after this window are not accepted.
Bikes with power, charging, or component issues are covered under the manufacturer warranty; Redtail coordinates repair or replacement remotely at no cost to the customer.
Returns
Change-of-mind returns accepted only on unopened, factory-sealed items requested within 72 hours (3 days) of delivery, with a 15% restocking fee plus return shipping. Once a box is opened or a bike is ridden, it is no longer eligible.
Order cancellations carry a 3% transaction fee, because card-processing fees are non-recoverable.
Alaska, Hawaii, U.S. territories, P.O. boxes, and remote areas may incur extra charges or be excluded — contact us before ordering. Full terms: Redtail Shipping Policy · Redtail Refund & Return Policy. YVY publishes its own shipping and return terms, which apply to orders placed directly with YVY, not to orders placed here.
Frequently asked questions
What is the difference between the YVY K16 and the K20?
Wheel size and brakes. The K16 rides on 16 x 4.0 wheels against the K20's 20 x 4.0, which makes it a smaller bike suited to riders from 5 ft 2 in rather than 5 ft 4 in. It also uses mechanical disc brakes where the K20 has hydraulic ones. The motor (1500W), the battery (48V 20Ah, 960 Wh), the 7-speed drivetrain and the 330 lb load ceiling are the same on both. The K16 is $20 cheaper.
How far can the K16 actually go on one charge?
YVY publishes two answers on the same page. Its bullets claim up to 50 miles on throttle and 75 with pedal assist; its FAQ, further down that page, says 30 and 50. We print both because both are the manufacturer's. The pack is 48V x 20Ah, about 960 Wh — the same energy as the K20 — so the honest expectation is K20-like range, adjusted for however you ride.
What is the K16's top speed?
YVY prints "28+++ mph" in pure electric mode on a full charge. That is a manufacturer figure, not a measured one. On 16-inch wheels the same motor produces more torque at the rim and a lower top gear, so treat the number as the ceiling of what the controller allows rather than what you will hold on flat road.
Is a 1500W electric bike street legal?
It depends on your state. 15 U.S.C. 2085(b) defines a "low-speed electric bicycle" as having "an electric motor of less than 750 watts (1 h.p.)" and a motor-only top speed under 20 mph for a 170 lb rider. YVY rates this motor at 1500W, so its own figure sits outside that federal definition, and many states then treat such a vehicle under moped or off-highway rules. Check your state's rules before riding on a road or bike path.
What height and weight does the K16 fit?
YVY's FAQ recommends a rider height of 5 ft 2 in to 6 ft 0 in for this model — the lowest starting height in its range — with a maximum load capacity of 330 lb. That load figure covers rider and cargo together.
Are 16-inch wheels worse than 20-inch on rough ground?
Generally yes, and it is geometry rather than opinion: a smaller wheel meets an edge or a pothole at a steeper angle, so it drops into gaps a larger wheel rolls across. The 4.0-inch tire width offsets some of that by cushioning impacts, which is why this is still a capable bike on gravel and packed dirt. If most of your riding is broken trail at speed, the 20-inch K20 is the better tool.
How long does the K16 take to charge?
YVY states 4 to 6 hours at 3A — the only charging spec in its range that names an amperage rather than just hours. The pack is removable, so it can charge indoors away from the bike.
Why does the URL say Q16 when the bike is called K16?
We do not know, and we are not going to invent a reason. YVY's own product URL contains q16 while the page title and the body copy both say K16. We list it as the K16, the name printed on the page, and flag the mismatch here rather than quietly picking one.
Keep looking
Every YVY at Redtail · Compare the K20 · Compare the K20 Lite · Compare the K20 Pro · E-bike laws in your state · Shop electric bikes by type
Primary sources
- YVY product page: YVY K16 1500W Fat Tire Electric Bike, 16-Inch Wheels yvyebike.com/products/yvy-q16-1500w-fat-tire-electric-bicycle. Retrieved 2026-08-25.
- YVY Ebike Warranty yvyebike.com/pages/ebike-warranty. Retrieved 2026-08-25.
- YVY Company Address page yvyebike.com/pages/company-address. Retrieved 2026-08-25.
- YVY Shipping Policy yvyebike.com/pages/shipping-policy. Retrieved 2026-08-25.
- YVY Return & Refund Policy yvyebike.com/pages/return-refund-policy. Retrieved 2026-08-25.
- 15 U.S.C. § 2085, Low-speed electric bicycles uscode.house.gov — 15 U.S.C. § 2085. Retrieved 2026-08-25.
- Redtail Shipping Policy. Retrieved 2026-08-25.
- Redtail Refund & Return Policy. Retrieved 2026-08-25.
- Redtail's state-by-state e-bike law guide. Retrieved 2026-08-25.
Specifications and prices are YVY's own, reproduced as published from the archived copy of its product page, with contradictions in its copy flagged rather than resolved silently. The federal definition is quoted from the statute itself and was retrieved twice, independently, from the U.S. Government Publishing Office and Cornell's Legal Information Institute. Warranty terms are YVY's; shipping and return terms on this page are Redtail's. Manufacturer sources are cited by name and address rather than linked, because every link on this page should keep you here. Want to see any source we used? Email support@redtailebikes.com and we'll send it.
How we verified this page. Every specification above was read from an archived copy of YVY's own product page (yvyebike.com/products/yvy-q16-1500w-fat-tire-electric-bicycle), retrieved 2026-08-25, with the price cross-checked the same day against a second, independently fetched YVY endpoint. Figures are the manufacturer's ratings, not our test results; where YVY's page disagrees with itself, or leaves a specification out, the “How to read this spec sheet” section names it and says what we did. The federal definition is quoted from the statute and was retrieved from two independent publishers. Prices are USD, matched to YVY's own storefront, current at the date shown. Corrections: support@redtailebikes.com.
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