When I tested the Cyrusher XF900, the dual suspension bike felt lackluster on its 750W motor for a bike that heavy. So the first number I looked at on the Rad Power Bikes Radster Trail was torque: Rad lists 100 Nm. I haven’t ridden it. This review is built from Rad’s official Radster Trail page, rechecked on Oct 27, 2026, and Rad’s warranty page.
Should you buy one?
At $1,999 (as of Oct 27, 2026), the Radster Trail is an off-road-leaning bike with a 750W rear hub, 100 Nm of torque, a 720Wh battery, a torque sensor, hydraulic disc brakes and an 80mm suspension fork. That’s a strong package on paper for riders who mix gravel, dirt and pavement, especially in hilly areas.
The trade-offs are the weight, the suspension and the rack. It’s 77.5 lb, the fork is the only suspension, and the rear rack is rated for 55 lb. Max rider weight is 290 lb.
There’s also the company to consider. Rad Power Bikes filed for Chapter 11 in December 2025, and Life EV bought the brand and its assets, closing in March 2026, as reported by TechCrunch. The new owner, Rad Life Mobility, now offers a two-year warranty on the frame and main components, and two years or 300 charge cycles on the battery, for bikes bought new from Rad or an authorized Rad retailer. Pedals, shifter, derailleur, crankset and saddle get one year. That’s solid coverage. Just know that a used Radster bought before Dec. 15, 2025 isn’t covered by the new owner.
What the specs mean on the trail
100 Nm is a lot of torque for a hub motor, and it’s what should get you up steep dirt climbs without much effort. Rad notes the power to the ground is kept under 750W for compliance. The torque sensor builds assist as you push harder, which helps with control on loose dirt, where a sudden surge can spin the rear tire. A half-twist throttle is there when you want it.
The 80mm hydraulic fork uses a thru axle, which stiffens the front end. That’s enough for gravel and rooty trails, not real mountain biking. The Kenda Havok tires are 27.5 x 3.0 in, what Rad calls mid-fat. They should be grippier and softer than a commuter tire and quicker to steer than a 4 in fat tire. Rad also fits a 1x8 Shimano drivetrain with an 11-34 freewheel, so you have a low gear to spin up climbs instead of leaning entirely on the motor.
The bike ships in Class 2 at 20 mph, and you can unlock Class 3 pedal assist up to 28 mph where it’s legal, or a limited Class 3 at 25 mph. Many trails restrict e-bike classes, so Class 1 mode is useful for keeping it legal where throttles aren’t allowed. Check the rules for the trails you ride.
Range and battery
The 720Wh battery is big, and Rad rates it for 25 to 65 miles. I’d expect the low end with heavy throttle on hilly trails and the high end on low assist over easy ground. Rad says the battery is certified to UL 2271, with the full bike certified to UL 2849. The included charger is 2 amps.
One small security note from Rad’s own page: the battery key is a universal key that may work on other Rad battery locks. Take the battery with you if you park at a trailhead for long.
Sizing, weight and weather
Rad sells two frame sizes. The Regular fits riders from 4’11” to 5’8”, with a 21 in standover. The Large fits 5’7” to 6’4”, with a 24 in standover, and weighs 78 lb. That overlap at 5’7” and 5’8” means a few riders can choose. The smaller frame should feel more nimble, and the larger one more stretched out.
At 77.5 lb for the Regular, or 68.5 lb with the battery out, it should feel planted, but it’s hard to lift onto a car rack. Pull the battery before you lift it, and look for a hitch rack rated for heavy e-bikes. Rad rates the Trail IPX6, its highest water rating, for heavy splashes, and pairs that with hydraulic brakes for wet stops. The display can be locked with a fob or a passcode, and the turn signals and brake light help on the road ride to the trailhead. Rad rates the build difficulty as hard and recommends its assembly service.
Pros and cons (from the specs)
Pros: 100 Nm for hills; a 720Wh battery; a torque sensor plus throttle; hydraulic brakes and an 80mm fork; turn signals and a brake light; IPX6 weather protection; two frame sizes; a two-year warranty when bought new.
Cons: 77.5 lb is heavy; front suspension only; a modest 55 lb rack; 290 lb max rider; a brand under new owners after bankruptcy.
How it compares to bikes I’ve reviewed
The Cyrusher XF900, which I compared in my Aventon Sinch step-through vs Cyrusher XF900 vs Wallke F1 guide, has the rear suspension and 4 in tires the Radster Trail lacks, and I said it’s the bike for riders who spend about 90% of their time on dirt and gravel. But its 750W motor felt lackluster to me on that heavy frame. The Radster Trail lists more torque, though I haven’t ridden it to compare. If you split your time between dirt and road, the Trail’s narrower tires and switchable classes look like the better fit on paper, though at 77.5 lb it’s slightly heavier than the 74 lb XF900. If you want Rad’s pavement version, see the Radster Road. The Rad I have ridden is the RadRunner 3 Plus utility bike, which uses a cadence sensor. The Trail’s torque sensor is the upgrade I wanted on that bike. My best e-bikes for hills guide covers more climbers.
Who it’s for
The Radster Trail fits riders who mix gravel, dirt trails and pavement, live somewhere hilly, and weigh under 290 lb. With two frame sizes, it covers a wide range of heights. Look elsewhere if you want rear suspension for rough singletrack, need to haul more than 55 lb on the rack, or need to lift the bike often.
Price
$1,999 on Rad’s site as of Oct 27, 2026.
