Sur-Ron's official top speeds
Sur-Ron USA's home page lists the 2025 Light Bee X at 46.6 mph with 8,000 W peak and 196.2 ft-lb, and the Ultra Bee X HP 2026 at 59 mph with 24.5 kW, 384 ft-lb and 0 to 31 mph in 1.84 seconds. It also lists a Light Bee X NA version at 50 mph with 10 kW and a 72V 35Ah battery, and the smaller Light Bee S at 31 mph.
The Ultra Bee's road version is listed at 110 km/h (about 68 mph) on Sur-Ron USA's Ultra Bee page, with a 22.5 kW motor. The HP version Voro Motors sells in the US is the off-road one.
What changes the number on your trail
Top speed is measured in good conditions. Sur-Ron says its range and speed figures were tested with a 154 lb rider, 27 °C, a steady speed and a dry, flat road. Heavier riders, hills, mud, knobby tires and a half-empty battery all lower what you'll see. Voltage sags as a battery drains, and many bikes reduce power when the pack or motor gets hot.
Gearing matters too. A bigger rear sprocket gives more pull out of corners and a lower top speed. Altis shows this clearly on the Sigma: 65 mph with the 44T MX gearing, 80 mph with the 39T Standard setup, per the dealer.
Acceleration matters more than top speed
On a trail, you'll feel acceleration far more often than top speed. Sur-Ron lists the Ultra Bee X HP at 0 to 31 mph in 1.84 seconds, and REV Rides, a US dealer, lists 0 to 30 mph in 1.8 seconds for the E Ride Pro SR. Those are quick numbers for any dirt bike, and they come from the instant torque of an electric motor: no clutch, no revs to build.
Torque figures tell the same story. Sur-Ron lists 196.2 ft-lb for the Light Bee X and 384 ft-lb for the Ultra Bee X HP, and Stark 764 ft-lb at the rear wheel for the VARG EX. Brands measure torque in different places (at the motor or at the wheel), so compare these with care.
What it means for you: even a Light Bee X will pull hard enough out of a corner to surprise a new rider. Start in the lowest mode.
Video: "Factory KTM vs. SUR-RON X | Electric Dirt Bike Test", Electric Cycle Rider on YouTube. Not made by us; chosen because it shows the bike or the topic clearly.
How Sur-Ron compares with its rivals
On top speeds the brands publish:
- Rawrr Mantis X: 50 mph. Rawrr Mantis Mini R: 46 mph.
- Talaria Sting R MX4: sold limited to 20 mph, per REV Rides.
- Segway Xyber: up to 43 mph with an app limiter.
- KTM Freeride E: 59 mph.
- E Ride Pro SS 4.0: 62 mph. E Ride Pro SR: 70 mph, 0 to 30 mph in 1.8 s.
- Talaria Komodo MX: about 65 mph.
- Altis Sigma: 65 mph (MX) or 80 mph (Standard).
See all of them in our fastest electric dirt bikes ranking, ordered by peak power.
Top speed and range don't mix
One last thing the brochures won't tell you: riding at top speed empties the battery fast. Air drag grows quickly with speed, so a bike cruising at 50 mph uses far more energy per mile than the same bike at 20 mph. Sur-Ron's own range figures are measured at a steady, moderate speed: 46.6 miles at 24.9 mph for the Light Bee X and 71 miles at 31 mph for the Ultra Bee, per Sur-Ron USA. If you plan long, fast rides, look at battery size first: 2,040 Wh on the Light Bee X against 4,440 Wh on the Ultra Bee.
What about upgrades?
The Light Bee X is famous for its upgrade scene: bigger controllers and batteries can raise its speed a lot. Before you go there, know three things. Upgrades can void your warranty. Brakes, suspension and tires were sized for the stock power. And in many places, a faster bike changes which rules apply to it.
If you want more speed out of the box, buying a bike built for it (an Ultra Bee, a Komodo or an SR) is usually cheaper and safer than upgrading a Light Bee.
Speed, e-bike classes and the law
Here's where top speed has real consequences. In the US, e-bike classes generally top out at 20 or 28 mph of motor assistance, depending on the class. A Sur-Ron goes well past that, so in most states it's not an e-bike, whatever some sellers say: it's an off-highway motorcycle.
That changes where you can ride it, whether it needs an off-highway registration, and what happens if you ride it on the street. The Light Bee X and Ultra Bee HP that US dealers sell are off-road bikes. Before you ride anywhere public, read our street-legal guide and check with your state.
One more thing: some bikes, like the Talaria Sting R MX4 from REV Rides or the Segway Xyber, ship with a speed limit or an app limiter. That's a useful tool if you share the bike with a younger rider.
How fast you really ride
Most trail riding happens well below top speed. On tight singletrack, you'll spend much of your time under 25 mph; on fire roads and open desert, faster. That's why we tell new riders not to shop on top speed alone. A Light Bee X at 46.6 mph is already more than most beginners will use for months.
What you will use every ride: low-speed control, brakes and the power modes. Start in the softest mode, learn to stop smoothly, and only then open things up. If speed is the point for you, compare the Ultra Bee (59 mph, per Sur-Ron USA) with the Talaria Komodo MX and the E Ride Pro SR on our fastest electric dirt bikes ranking.
Do you need that speed?
Probably not. Much of a typical trail ride happens far below top speed, and speed is rarely what makes a trail fun. Torque out of corners, a light frame and good suspension matter more. That's why our formula weights power at 15% and weight at 15% too. If you're new, set a low mode, wear real gear (see our safety gear guide) and let speed come with skill.
The bikes in this article, side by side
| Bike | |||
|---|---|---|---|
| Price | $5,999 | $4,600 | $5,199 |
| Peak power | 24.5 kW peak | 8 kW peak | 25 kW peak |
| Battery | 4,440 Wh | 2,040 Wh | 3,600 Wh |
| Weight | 187 lbs | 125.6 lbs | 183 lbs |
| Top speed (brand) | 59 mph | 46.6 mph | 70 mph |
| Warranty | Not stated | Not stated | Not stated |
| Road status | Off-road only | Off-road only | Off-road only |
| Buy | See price | See price | See price |
