• Speedometer icon to represent the top speed of this electric bike model

    Top speed28 mph

  • Battery icon with a lightning bolt to represent the max range of this electric bike model

    Range65+ miles

  • Lightning bolt icon to represent the motor power of the electric bike

    Power750W

  • Icon of a weight to represent the payload capacity of the electric bike

    Payload370 lb

  • Logo communicating that this product is UL certified

    SafetyUL Certified

  • Icon of a person riding a bike uphill to communicate torque for this electric bike model

    Torque100 Nm

4.5 (123 reviews)

Radster™ Trail Electric Off-Road Bike

Off-road fun meets eye-catching style with our svelte all-terrain ebike.

$2,199
Ships within 2 business days
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Build difficulty: Medium


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*Shipping fees and restrictions may apply in Alaska and Hawaii, see checkout.

Rugged good looks are just the beginning.

The Radster Trail is an electric off-road bike with the power to do anything, and the range to go anywhere. The 100 Nm motor makes quick work of hills, the 28 mph top speed promises fast-paced fun, and with two frame sizes for a personalized fit, it’s so comfortable that you’ll barely feel like you’re roughing it.

"One of Rad's best motor experiences to date."

Electric Bike Report

"The power curves in Rad Power Bikes’ new motors make for one of the most intuitive riding experiences we’ve seen."

CleanTechnica
Woman and man riding Radster Trail electric off-road bike on a trail through a grassy area
Dive deeper

The power to do anything

Right side view of a Radster Trail electric commuter bike, size regular in fir green
Safety & quality

Engineered to put safety first

Explore our first-class safety features for all rider types.

Close up of a Rad Safe Shield battery on a Radster Trail electric off-road bike

Raising the bar

All Rad ebikes are either UL Certified or tested by ACT to comply with UL 2849.

This means our bikes and electric systems have undergone rigorous testing to meet safety standards set by UL, a respected third-party organization.

Although U.S. guidelines don’t currently require ebikes to meet UL Certification, we go the extra mile to ensure our riders feel safe in the saddle. UL Certification, we go the extra mile to ensure our riders feel safe in the saddle.

Learn More

Size guide

Tailor-fit comfort. For every rider.

in

30" bike inseam

Slide the scale for your bike inseam measurement

Regular

You will be able to pedal and stand over the frame comfortably.

Large

You will be able to pedal and stand over the frame comfortably.

5'4

Katya's measurements: bike inseam 30"/ 76cm, height 5'4"/ 163cm

Design driven

Each piece designed for a purpose.

Man and woman each riding on Radster Trail electric off-road bikes on a grassy trail

Feel natural

Experience smooth rides on any terrain with a torque sensor that responds to the way you pedal, added power for effortless hill climbing, and hydraulic disc brakes that bring you to a prompt, graceful stop.

Person using a key card as a fob to unlock their ebike, shown with a Radster Trail electric commuter bike.

Ride the way you want

Blaze your own trail. Versatile mid-fat tires glide over mountain paths and uneven pavement, while the adaptable class 1, 2, and 3 speed settings let you set your own pace. Add in its two frame sizes, and the possibilities are endless.

Green Radster Trail electric off-road bike parked in front of a building, with a woman walking through the entrance.

Rain or shine

No more rainchecks. With industry-leading IPX6 weather-protection and a brighter 200 lumen headlight, the Radster Trail is your go-to rainy day companion.

Person standing by a Radster Trail electric off-road bike in the dark, with the rear light lit

Radically safe

Stay safe in the saddle with rear-facing turn signals. When the ride’s over, secure your ebike by locking the controls with a fob or personal security code. And for ultimate peace of mind, the Safe Shield Battery is outfitted with thermal-resistant technology.

Rad accessories

So many ways to ride Rad.

Radster Trail electric off-road bike in size large installed with a hardshell locking pannier, front basket with roll top liner bag, mirror and phone mount.
Radster Trail electric off-road bike in size large installed with a hardshell locking box, front basket with basket bag, mirror and phone mount.
Green Radster Trail electric off-road bike in size regular installed with a pannier, front basket with roll top liner bag, mirror and phone mount.
Radster Trail electric off-road bike in size regular installed with a rear basket, front basket with basket bag, mirror and phone mount.

Supply runs made easy

Accessorize for errands or exploring.

Shop Accessories

Gear up for adventure

Setting up camp? It's like a backpack on wheels!

Shop Accessories

For town and country

Gear for your morning commute, and after-5 fun.

Shop Accessories

Weekend wanderer

Life's a picnic. Load up food, drinks, and games.

Shop Accessories
Woman standing next to a Radster Trail electric off-road bike in a grassy area
Woman standing next to a Radster Trail electric off-road bike in a grassy area
Woman standing next to a Radster Trail electric off-road bike in a grassy area
Woman standing next to a Radster Trail electric off-road bike in a grassy area

Reliable service and support.

Truck icon in a yellow circle

Free, fast shipping

Wait less, ride more. Enjoy fast, free shipping on all ebike orders.

Learn more
Shield with check mark on a yellow background

2-year warranty

Ride in confidence. We’ve got you covered.

Learn more
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Explore our Help Center

Can’t choose a bike? Need to fix a flat? We’re here to help.

Support

Radster™ Trail Electric Off-Road Bike Reviews

Specs & details

Electronics

  • Battery

    15Ah 720 Wh Safe Shield Advanced Semi-Integrated Battery, Samsung 50GB or LG M50LT cells, UL Certified to UL-2271

  • Charger

    48VDC, 2 Amp Rad Power Bikes smart charger, operates on 100V-240V AC power outlets

  • Class

    Class switchable 1 to 3. Ships in Class 2 status.

  • Display

    Rad custom color display. See Display section below for details.

  • Hub Motor

    Rear hub 750W, 100 Nm torque
    Stated wattage is the manufacturer’s rated power capacity. Actual power-to-ground wattage is under 750W to ensure ebike regulatory compliance and may vary depending on riding conditions.

  • Lights

    Auto-on feature
    Front: ~200 lumens LED headlight with built-in reflector
    Rear: Integrated taillight with brake light and turn signals

  • Pedal Assist

    Torque sensor, 5 PAS Levels, plus a zero assist option

  • Range

    Estimated 25-65 miles per charge

  • Throttle

    Half twist throttle

  • UL Status

    UL Certified to UL 2849 and UL 2271

  • USB Ports

    One USB-C port, located on remote

To ensure uninterrupted shipping, some parts may differ from those listed. Rest assured, our engineers rigorously test each component to guarantee quality and compatibility.

Components

  • Bell

    Yes

  • Brake System

    Tektro Hydraulic Disc E350

  • Brake Pads

    Tektro semi-metallic P20.11

  • Brake Rotors

    180mm x 1.8mm

  • Crank Set

    50T with dual sided chain ring cover, 170mm crank arms

  • Derailleur

    Shimano 8-speed

  • Fenders

    Front and full rear alloy mudguard

  • Fork

    SR Suntour hydraulic suspension fork, 80mm travel, tapered steerer tube, thru axle

  • Frame

    Aluminum

  • Freewheel/Cassette

    8-speed freewheel 11-34T

  • Lock-on Gearing

    1x8 speed

  • Grips

    Ergonomic rubber comfort grips

  • Handlebar

    Aluminum, 710mm wide

  • Kickstand

    Side mounted, adjustable angle kickstand

  • Pedals

    Alloy Platform, Boron axle with reflectors, standard 9/16" X 20 TPI threading

  • Rear Rack

    Integrated, 55 lb (25 kg) carrying capacity

  • Saddle

    Padded sport saddle with shallow anatomic cut-out and contoured sides

  • Seatpost

    Regular: 350 mm x 31.6 mm
    Large: 400 mm x 31.6 mm

  • Seatpost Clamp

    38.1 mm

  • Shifter

    Shimano 8-speed thumb shifter

  • Stem

    40mm A-head

  • Tires

    Kenda Havok 27.5" X 3.0" with puncture protection and tan sidewall

To ensure uninterrupted shipping, some parts may differ from those listed. Rest assured, our engineers rigorously test each component to guarantee quality and compatibility.

Geometry

Bike graphic with the measurements for a Radster Trail electric off-road bike, size regular
Rider Heights 4'11"-5'8" (150-173 cm)
Bike Weight 77.5 lb (35.2 kg), 68.5 lb (31.1 kg) with battery removed
Payload 370 lb, 290 lb. max rider
Rear Rack Payload 55 lb (25 kg)
Handlebar Height 44.5" (113.0 cm)
Reach 15.2" (386 mm)
Seat Height From ground: 30.5" - 37.5" (78.7 - 95.3 cm)
From pedal bottom stroke: 25" - 33" (64 - 84 cm)
Standover Height 21" (53.3 cm)
Stepover Height 20" (50.8 cm)
Total Length 74" (188 cm)
Wheelbase 46.6" (118.3 cm)
Seat Tube Length 15.0" (380 mm)

Sizing

Bike inseam sizing chart(Inches)

23 - 25"

25 - 33"

33+"

You will not be able to ride the bike comfortably.
You will be able to pedal and stand over the frame comfortably.
Your legs may be too long to get full leg extension when pedaling.
What to Measure

Your “bike inseam” — or inside leg length — is the distance between your body where it sits on your bike saddle and the ground.

It’s typically an inch or two longer than the length of your trousers, but measure to be sure.

You’ll use this number on the chart to get a feel for how the different models will fit you.

How to Measure

Gather the tools needed:

Medium-width hardcover book
Tape measure
A wall you can stand against
A trusted friend or relative

Wearing your regular riding shoes and with your back to the wall, stand with your feet spread so there is about 7 inches between them - this is about the distance apart your feet would be when straddling a bike with your feet on the ground (standover height).

Place a hardcover book against the wall with the spine of the book facing upward. Slide the book upwards towards your groin until it is solidly against your body. This may be a bit awkward, but is way more comfortable — and safer! — than trying to ride a bike that is too big.

If you have a buddy helping you, get them to measure from the floor to the top of the book spine while you hold the book in place. If you’re going it alone, carefully hold the book in place and measure from the ground to the top of the book spine.

Display

  • Class level

    Choose speed settings for your ride:
    Class 1: up to 20 mph, throttle only works while pedaling.
    Class 2: up to 20 mph while pedaling or throttling.
    Class 3, Limited: up to 25 mph while pedaling.
    Class 3: up to 28 mph while pedaling.

    Remember: adhere to posted speed limits and check local regulations for any speed or ebike class restrictions on the road or trail you're using.

  • Control lock

    For an extra layer of security, lock and unlock the controls with the touch of a fob or a personal security code

  • Speedometer

    Fast and Curious? The speedometer will tell you your current speed.

  • Odometer

    Track the distance you’ve racked up, either by trip or through the bike’s entire lifespan.

  • Estimated remaining range

    Is it time to recharge? To help you keep track, this displays your remaining battery life in either percentage or remaining miles.

  • Trip time

    Did your trip feel like it was just half an hour, or did time fly by? This display will show you the time you spend on each outing. Be sure to reset your trip odometer before a ride you want to track.

  • Pedal assist level

    The higher the number, the more the motor will boost you when you pedal. This shows what level you’re on, from 0 to 5.

  • Motor watts

    Check out how much power the motor is supplying at any given time.

  • Headlight, tail light, and rear turn signals

    It’s always a bright idea to make sure your lights are on and operating.

    Note: Rear turn signals can be manually turned off or will turn off automatically two minutes into use.

  • USB charge indicator

    Charging your device? This will confirm if your phone (or tablet, or smartwatch, or headphones, or …) is getting the juice it needs.