Hear from Real Rad Owners
Most popular accessories
RadRover Rear Rack
ABUS Bordo Granit X-Plus 6500
Fremont Pannier Bag
SR Suntour SP12 NCX Seatpost
GUB PRO-3 Phone Mount
Step-Thru to Adventure
We built the RadRover to go anywhere and do anything. Now, it’s designed to fit anyone.
Introducing the RadRover Step-Thru, a low-step electric fat bike that combines the rugged look and capabilities of our flagship model with a new frame style that meets the needs of all riders.
With a lower standover height and less distance between you and the handlebars, the RadRover Step-Thru makes it easier than ever to get on and get going -- all without sacrificing the power, strength, and durability that made the RadRover, its inspiration, North America’s best-selling electric fat bike.
Geared Hub Motor
Miles per Charge (estimate)
Made from a layer of aramid and ceramic particles inside the tire under the tread, the Kenda K-Shield integrated tire liner is a line of defense designed to provide extra protection against punctures from thorns, glass, and other small materials.
7-Speed, 11-34 Tooth Freewheel
A wider range of gearing at your disposal means more torque for treacherous uphill climbs and maintain pedal authority at top speed.
Front and Rear Fenders
Included front and rear fenders made from durable PVC and stainless-steel hardware help protect you from the elements
Integrated Brake Light
Powered using the main battery pack and features brake light functionality that is activated any time the brakes are applied.
750W Bafang Geared Hub Motor
80 Nm of torque to conquer hills and power through loose terrain like never before.
Front Suspension Fork
Our custom Rad Power Bikes RST suspension fork has 80 mm of travel, preload adjustment, and lockout.
Twist Grip Throttle
750W of power on-demand.
Low-Step Frame Design
Featuring a 20.25" stand over height, this bike is perfect for those needing a more approachable package without sacrificing features or functionality.
48V, 14 Ah (672 Wh) with Lithium NMC Samsung 35E cells, rated for 800 charge cycles
48V, 2 Amp Rad Power Bikes smart charger, operates on 100V-240V AC power outlets
Backlit LCD with charge indicator, speedometer, odometer, trip odometer, pedal assist level, wattmeter, and more
750W brushless Bafang geared hub motor with 80 Nm of torque, 5:1 planetary gear reduction
Front: Standard Rad Power Bikes LED headlight
Rear: Integrated taillight with brake light
Intelligent 5 level pedal assist with 12 magnet cadence sensor
Half twist throttle
Water resistant connectors and wiring harness
Display: 5V, 1 Amp
Tektro Aries (MD-M300)
Aluminum alloy comfort grip levers with motor cutoff switch and integrated bell
Brake Pad Material
Tektro 180 mm front and rear
42T, 170 mm ProWheel Pioneer forged alloy, dual-sided aluminum bashguard
7-Speed Shimano Acera
Full coverage front and rear
RST spring fork, 80 mm travel, with lockout and preload adjustment; 270 mm steerer tube
DNP 7-speed freewheel, 11-34T
1 x 7-speed
Durable imitation leather ergo
Custom formed aluminum, 700 mm wide, 4" rise
Semi-integrated, 1-1/8" straight steerer tube
Heavy-duty aluminum with wide plastic foot
Wellgo B087 CrMo axle, forged aluminum platform with reflectors, standard 9/16" x 20 TPI threading
Double wall, 36H
Velo Plush with lifting handle
Promax, 350 mm x 27.2 mm
Shimano SL-TX50-7R thumb shifter, 7-speed
12-gauge stainless steel, black
50 mm + 30º (15 mm rise)
Rad Power Bikes by Kenda Juggernaut 26" x 4", K-Shield puncture-resistant liner
5'4" - 6'2"
28" - 37"
*Measured from bottom of the pedal stroke
Front: 135 mm
Rear: 170 mm
Bottom Bracket Shell Width
Square Taper Bottom Bracket
Seat Tube Length
Top Tube Length (effective)
Max Tire Width
What to Measure
Your “real inseam” -- or inside leg length -- is the distance between your body where it sits on your bike saddle and the ground.
This will typically be an inch or two longer than the length of your trousers, but you’ll want to 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.
A fuel gauge for your electrons.
Pedal Assist Level
The higher the number, the more the motor will boost you when you pedal.
5V, 1 Amp port to charge your phone or portable electronics on the go.
Calculate how many miles you didn't drive this year and how much money you saved on gas.
Can be set to current speed, max speed, or average speed.
Shows how much power the motor is outputting at any given time.
The Rad Battery Pack
With over a decade of designing and building ebikes under our belts, we know that a high-capacity battery like this isn’t something you cheap out on. We designed and built our batteries using genuine Samsung 35E cells, which are some of the most energy-dense and reliable lithium-ion cells on the market today. These cells have allowed us to build an overall better battery, and at only 7.7 lb, it's one of the lightest and most energy-dense packs on any electric bike.
Miles per Charge
To Fully Charge
Total Battery Capacity
Compact, Discreet, Maintenance-Free Hub Motor
With 750W and 80 Nm of torque at your disposal, this Bafang geared hub motor is what is going to help power you up steep inclines and get you up to top speed quickly from a dead stop, all while remaining quiet and inconspicuous. These kinds of numbers aren't even found on some of the most expensive mid drive systems out there, so prepare to outperform and outclass everyone you see on the road.
Max Motor Torque
"This is one of the only step-thru fat tire electric bikes I’ve seen, and it’s done really well. Rad Power Bikes custom engineers their frames and puts a lot of attention into the details..."
Looking for something more traditional?
The RadRover 5 is a great option if you want many of the same features as the RadRover Step-Thru but with a high step frame.