RadRhino Step Thru Electric Fat Bike White
RadRhino Step Thru Electric Fat Bike Black
RadRhino Step Thru Electric Fat Bike White
RadRhino Step Thru Electric Fat Bike Black
front suspension on bike
front tire of bike
Twist Power Assist

RadRhino Step-Thru 1

Electric Fat Bike

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Step-Thru to Adventure

We built the RadRhino to go anywhere and do anything. Now, it’s designed to fit anyone. Introducing the RadRhino 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 handlebar, the RadRhino Step-Thru makes it easier than ever to get on and get going.

Technical specs

Key Features
RadRhino Step-Thru 1key feature 1

Puncture-Resistant Tires
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.

RadRhino Step-Thru 1key feature 2

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.

RadRhino Step-Thru 1key feature 3

Reflective Sidewall Striping
Extremely durable and have a larger total reflective surface and better visibility than traditional spoke mounted reflectors.

RadRhino Step-Thru 1key feature 4

Integrated Brake Light
Powered using the main battery pack and features brake light functionality that is activated any time the brakes are applied.

RadRhino Step-Thru 1key feature 5

250W Bafang Geared Hub Motor
The Bafang geared hub motor gets you to a top speed of 25 km/h with ease.

RadRhino Step-Thru 1key feature 6

Front Suspension Fork
Our custom Rad Power Bikes RST suspension fork has 80 mm of travel, preload adjustment, and lockout.

RadRhino Step-Thru 1key feature 7

Twist Power Assist
Half grip twist power assist up to 6km/h without pedaling.

RadRhino Step-Thru 1key feature 8

Low-Step Frame Design
Featuring a 514 mm 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 35, rated for 800 charge cycles

48V, 2 Amp Rad Power Bikes smart charger, operates on 230V AC power outlets

48V, 250W

Backlit LCD with charge indicator, speedometer, odometer, trip odometer, pedal assist level, and more

Hub Motor
250W Brushless Bafang Geared Motor

Front: Rad Power Bikes branded standard LED
Rear: Integrated Taillight with Brake Light Indicator Functionality

Pedal Assist
Intelligent 5 level pedal assist with 12 magnet cadence sensor

55-88+ kilometers per charge (estimate)

Half grip twist power assist up to 6 km/h without pedaling

Water resistant connectors and wiring harness

USB Ports
Display: 5V, 1 Amp

Bike Components
Brake Calipers
Tektro Aries (MD-M300)

Brake Levers
Aluminum alloy comfort grip levers with motor cutoff switch

Brake Pad Material
Sintered metal

Brake Rotors
Tektro 180 mm front and rear

KMC Z7 Rustbuster

Crank Set
42T, 170 mm ProWheel Pioneer forged alloy, dual-sided aluminum bashguard

7-Speed Shimano Acera

Full coverage front and rear

RST Suspension Fork with 80 mm of Travel, Preload Adjustment, and Lockout

6061 Aluminum alloy

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

Seatpost Clamp
Quick release

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

Geometry & Sizing
RadRhino Step-Thru 1 geometry
Recommended Rider Heights
163 cm - 188 cm

Frame Size
457 mm

Handlebar Height
1206.5 mm

Handlebar Reach
406 mm

Seat Height
711 mm - 927 mm
*Measured from bottom of the pedal stroke

Standover Height
514 mm

Total Length
1905 mm

1168 mm

Dropout Width
Front: 135 mm
Rear: 170 mm

Bottom Bracket Shell Width
100 mm
Square Taper Bottom Bracket

Seat Tube Length
460 mm

Top Tube Length (effective)
584 mm

500 mm


Handlebar Width
700mm (27.5")

Crank Length
170 mm

Seatpost Diameter
27 mm

Max Tire Width

Bike Weight
32 kg

Payload Capacity
125 kg

Rear Rack Capacity
Optional: 20 kg

Display Technology
RadRhino Step-Thru 1 display
Battery Life
A fuel gauge for your electrons.

Pedal Assist Level
The higher the number, the more the motor will boost you when you pedal.

USB Charging
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.

Rad Battery Pack

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 3.5 kg, it's one of the lightest and most energy-dense packs on any electric bike.

Kilometers per Charge
5-6 Hours
To Fully Charge
672 Wh
Total Battery Capacity

Powerful, Effective Geared Hub Motor

With 250W 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.

Motor Power
80 Nm
Max Motor Torque
Hub Motor