Manufacturer specs only E-bike

Rambo Dominator UltraDrive

The Dominator HD with a torque-sensing Bafang Ultra mid-drive in place of the hub motor: pedal feedback and climbing manners, at about the same price.

2026 · Model number not published · Last checked November 7, 2026 · All documented bikes

Manufacturer product photo of the 2026 Rambo Dominator UltraDrive

Photo: Rambo Bikes's product listing, November 2026. We have not seen the bike; the photo shows the maker's own unit.

Fit

Who it fits, and what it's for

Fit is about use and body, not quality. A bike that fits can still be too much machine, so read the experience note before the spec table.

It's for

Climb steep forest roads with pedal feedback a hub motor does not give.
Haul a 350 lb rider-plus-gear load on full suspension.
Compare seat height, weight, power, price, and paperwork against other bikes by the numbers.

Terrain: Forest roads, Hill climbs, Backyard and private land.

Same claimed 32 mph and 76 lb as the HD, with torque-sensor pedal assist. An unsure rider should start elsewhere.

Not for

Anyone who needs to know it is a legal e-bike in Utah. Read the legal section first.
Quiet-ride hunters: Rambo says the mid-drive trades motor noise against the HD.
Riders or cargo over the 350 lb capacity.

Experience: Intermediate to Experienced.

Seat heightUnknownUnknown

Rider weight limit350 lbManufacturer

Rider height bandNot setSit on one first

Net weight68 lbManufacturer

What we still don't know.

Seat height, wheelbase, ground clearance, and charge time: Rambo publishes none of them.
What the battery really is: the page's own 15 Ah/720 Wh and 20 Ah claims do not reconcile.
We have not set a rider-height band. Sit on one before buying.

Specs

The numbers, and where each one comes from

Manufacturer figures are claims, not measurements. The source label on every row says which is which. An unknown value stays unknown.

Spec	Value	Source
Model number	Unknown	Unknown
Peak power	1.632 kW	Manufacturer
Rated power	1.0 kW	Manufacturer
Motor torque	160 N·m	Manufacturer
Battery voltage	48 V	Manufacturer
Battery capacity	20 Ah	Manufacturer
Battery energy	0.96 kWh	Calculated
Net weight	68 lb	Manufacturer
Seat height	Unknown	Unknown
Weight capacity	350 lb	Manufacturer
Top speed	32 mph	Manufacturer
Range	65 mi	Manufacturer
Front wheel	26 in	Manufacturer
Rear wheel	26 in	Manufacturer
Ground clearance	Unknown	Unknown
Wheelbase	Unknown	Unknown
Charge time	Unknown	Unknown

All figures are manufacturer claims from the Rambo product page, checked November 7, 2026. We have not seen or ridden this bike. The Performance row reads "1632 peak rating, 160Nm of torque, 1000w nominal power." The spec table says "48v 20ah 720WH," which cannot both be true (48 V at 20 Ah is 960 Wh); we record the 20 Ah of the orderable variant and calculate from it. Weight is with the battery removed; the pack adds 11 lb. Range is on the standard battery; up to 98 miles on the 30 Ah upgrade. The drivetrain is an 11-speed SRAM NX. Rambo publishes no seat height, wheelbase, ground clearance, or charge time.

Utah

Is it an e-bike in Utah?

An e-bike needs no title or registration in Utah, but only if it meets the state's definition. What the manufacturer says, what the statute says, and what happens if it doesn't qualify.

Utah e-bike as sold No

Classes offered 1, 2, or 3, switchable

Throttle Yes

Registration if it qualifies None

The manufacturer says

Rambo's Performance row reads "1632 peak rating, 160Nm of torque, 1000w nominal power," and the display's "Adjustable Class Setting (ACS) lets you switch between Class 1, 2, or 3 modes."

What Utah law says

No, on Rambo's own page: 1,000 W nominal and a 1,632 W peak, advertised on the product page, are past Utah's 750 W cap, and the ACS switch does not change what the maker advertises.

If it doesn't qualify

It doesn't qualify as sold, so Utah treats it as an electric motorcycle: a title and off-road OHV registration for public trails, like our Drax Apex. Riding it on roads as an e-bike is not on the table.

Wherever you ride it, a Class 1 or 2 mode is the only defensible setting.
Warranty is a lifetime frame warranty for the original purchaser and one year on everything else; register the serial number within 30 days, per Rambo's warranty page.
When we checked, only the TrueTimber Viper Western Camo / 20 Ah variant was orderable.

Check the bike, not the label. Utah's limits are 750 watts, 28 mph with pedal assist, and 20 mph on the throttle alone. For how to tell, read E-bike or not. For age limits by class, see For parents.

Sources

What we checked

Rambo Dominator UltraDrive product page Manufacturer specs, variant prices, and the ACS statement.
Rambo warranty policy Warranty terms and the 30-day registration requirement.
Utah Code 41-6a-102, definitions The 750 W e-bike limit and the high power electric device definition.

We have no commercial relationship with the brand. No link on this page earns us money. How money works here: partner arrangements.

Last checked November 7, 2026. If a source changes, the page may be behind. Email corrections@utahemotoguide.com and we'll correct the record.