Xathquia V8 Max

The listing we link names no model, but the seat panel in its main photo reads V8Max, and a second Xathquia listing with word-for-word identical bullets is titled "Xathquia V8 MAX". That second listing costs more than twice as much, and its main photo shows two bikes and two phone bags. It looks like a two-bike pack. If you want one bike, check the photo and the quantity before you pay.

It is also not the Xathquia Dirt 20, the faster sibling in the same Amazon family. That listing claims 36 mph and carries a bigger 48 V 23 Ah (1,104 Wh) pack for $529.99 (as of Nov 7, 4:11 PM EST, subject to change), and it publishes no rated wattage. OUXI sells an unrelated bike under the same V8 Max name, so check the brand on the listing too.

Most states use the three-class system. Class 1 assists to 20 mph only while you pedal. Class 2 adds a throttle, still capped at 20 mph. Class 3 assists to 28 mph, again only while you pedal, and a throttle that keeps pushing past 20 mph takes a bike out of every class. Every state caps the motor at 750 W rated, except Oregon, which allows 1,000 W.

On power, this bike passes: the first bullet says "Rated continuous power 750W". On speed, the listing leaves the question open. It says the bike "hits 28 MPH on flat terrain" and quotes its range "on pedal-assist mode", which implies another mode, but none of the five bullets mentions a throttle, and the listing photos are too small to show one on the bars. That leaves two readings:

• Pedal assist only above 20 mph. With a 750 W rated motor, that is a Class 3 e-bike, though Xathquia never claims a class.
• A throttle that reaches 28 mph. That is how most moped-style fat bikes at this price are sold, and it fits no class: too fast for Class 2 and outside the Class 3 definition. Many states would treat it as a moped, with registration, license and insurance questions attached.

We have not assigned a class, and you should not assume one. Seven jurisdictions do not recognize Class 3 at all today: the District of Columbia, Kentucky, Massachusetts, Montana, North Carolina, Pennsylvania and South Carolina. There, 20 mph is the ceiling for anything ridden as a bicycle. North Carolina adds Class 3 on December 1, 2026.

Many controllers on bikes like this let you set a speed limit in the display menu. The listing does not say whether this one does, so ask the seller before you buy, and set 20 mph before the first ride on roads, bike lanes or paths. At 20 mph with a 750 W rated motor the bike has the Class 2 shape, which is a bicycle in most states, though New Jersey requires registration and a license for every e-bike and Hawaii requires registration. Check your state on street legal by state and path access on Class 3 laws by state. The class explainer covers the background, and our throttle versus pedal assist guide explains why the throttle is the deciding detail.

The title leads with 2500 W peak, a burst figure the motor reaches on hard starts and climbs. Statutes regulate the rated continuous figure, and this listing prints it: 750 W. That puts the motor exactly at the federal line and inside every state's limit. Plenty of 20-inch fat bikes on Amazon quote peak power alone, including the FLIWIN Fat 20 and the ESKUTE V300, so on this point the V8 Max discloses more than its rivals.

No torque figure is given. The listing also claims climbing on a 30% grade, a 30-foot rise every 100 feet, which is far steeper than ordinary roads. Treat it as a claim: nobody has measured it independently. The motor is a rear hub, visible in the listing photo.

The pack is 48 V x 20 Ah = 960 Wh, and it is removable. The listing claims up to 60 miles in pedal-assist mode. The arithmetic:

• 960 Wh / 60 miles = 16 Wh per mile, which is what the claim needs. That is a light rider in low assist on flat ground: optimistic, but possible.
• 960 Wh / 25 Wh per mile = 38 miles, our planning figure for mixed assisted riding on a heavy fat bike.
• 960 Wh / 20 Wh per mile = 48 miles for gentle riding around 15 mph.
• 960 Wh / 40 Wh per mile = 24 miles for sustained throttle riding near 28 mph, where air resistance climbs fast.

Charging is quoted at 5 to 6 hours. Putting 960 Wh back in that time takes roughly 160 to 190 W, about a 3 to 3.5 A charger at a 48 V pack's 54.6 V charging voltage. The listing does not state the charger's output, and a 2 A charger would take nearer nine hours, so check the label. Our range guide covers what moves these numbers.

The suspension is real at both ends. The main photo shows a coil shock with a red spring running from the seat frame down to the rear wheel, so the rear wheel moves. That is not the sprung seatpost that some "full suspension" listings, such as the ASKGO S9, turn out to mean. The front fork is described as hydraulic. No travel figures are given.

Read the brake line closely. The word "hydraulic" in the listing belongs to the fork; the brakes are simply "disc brakes front and rear", with no type stated. On a bike that claims 28 mph, brakes are the part we would most want named, so ask whether they are mechanical or hydraulic.

Then there is what the five bullets leave out: no weight, no maximum load, no rider-height range, no gear count and no warranty term. For scale, the DEEPOWER QS7, a moped-style bike with the same 960 Wh battery size, lists about 75 lb in its manual, so do not plan on carrying this one up stairs. The long bench is not rated for a passenger; treat it as a one-seater. The photos show a large round headlight and a red tail light, and the main photo puts a phone app screen beside the bike, but no bullet mentions lights or an app, so do not count on the app.

Nor does the listing name UL 2849 (the complete e-bike electrical system) or UL 2271 (the battery pack) anywhere. That is a disclosure gap rather than proof of a failure, but it matters if you charge indoors, and in New York City, where Local Law 39 bans the sale of e-bikes and batteries not certified to those standards. Ask Xathquia for a certificate before you rely on one. The battery fire safety guide covers charging habits that matter whatever the label says, and our UL-certified shortlist lists bikes whose paperwork is documented.

Against 20-inch fat bikes we already review:

• The Xathquia Dirt 20 ($529.99 as of Nov 7, 4:11 PM EST, subject to change) is the faster sibling: 36 mph claimed, 1,104 Wh and cruise control, but no rated wattage, and at 36 mph it is not an e-bike in any state.
• The Pescroa Fat 20 ($439.99 as of Nov 7, 4:11 PM EST, subject to change) has the same legal shape, 750 W rated and 28 mph with no throttle stated, on a smaller 720 Wh pack. It adds a 90 Nm torque figure and a UL 2849 claim that names no lab.
• The FLIWIN Fat 20 ($498 as of Nov 7, 4:10 PM EST, subject to change) carries the same 960 Wh with a coil rear shock and ships limited to 20 mph, but publishes only a peak wattage and advertises unlocking to 34 mph.
• The ESKUTE V300 ($369.99 as of Nov 7, 4:10 PM EST, subject to change) has a slightly bigger 998 Wh pack, a hydraulic rear brake and seven gears, but states only a 1500 W peak and "30+ mph".
• The DEEPOWER QS7 ($679 as of Nov 7, 4:10 PM EST, subject to change) is the one to look at if paperwork matters: 960 Wh, 750 W rated in its manual, and shipped limited to a legal speed.

Our fat-tire e-bikes under $1,000 guide ranks the wider field, and best moped-style e-bikes says which bikes in this shape are legal as sold.

Buy the V8 Max if you want a moped-style fat bike with real rear suspension and a 960 Wh battery for $370.49 (as of Nov 7, 4:11 PM EST, subject to change), you ride gravel, sand, trails or private land, and you will set it to 20 mph on public roads and paths unless the seller confirms in writing that the throttle stops at 20 mph.

Skip it if you need the class printed on the listing, a named UL certificate for indoor charging, a stated warranty, or the weight and load limit before you buy. If speed is the point and the riding is off road anyway, the Dirt 20 is the faster Xathquia. If legality is the point, start from the street-legal shortlist.