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Hear from Real Rad Owners
Most popular accessories
ABUS Wheel Lock 5650L NR
$29.00
ABUS Adaptor Chain
$46.00
ABUS Bordo Granit X-Plus 6500
$179.00
Front Rack
$69.00
GUB PRO-3 Phone Mount
$19.00
The Commuter's Dream
Our iconic commuter bike is back in its Raddest version yet. New for this year, the RadCity 4 comes in a single, 18.5” frame size to fit a wider variety of riders. Its updated, swept-back handlebars are designed to keep you comfortable on longer rides, and it has mounts on its frame for an optional wheel lock.
The RadCity 4 lets you get across town like never before. You'll power over hills with ease, and you'll do it in style and comfort with a stock rear rack, fenders, and front suspension.
Direct Drive Hub Motor
Miles per Charge (estimate)
Lithium-Ion Battery
Payload Capacity
Technical specs
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.
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.
Reflective Sidewall Striping
Extremely durable and have a larger total reflective surface and better visibility than traditional spoke mounted reflectors.
Integrated Brake Light
Powered using the main battery pack and features brake light functionality that is activated any time the brakes are applied.
750W Shengyi Direct Drive Hub Motor
The direct drive hub motor provides smooth acceleration and features regenerative braking to help recharge the battery any time you engage the brake levers.
Integrated Rear Rack
Attach panniers, platforms, or baskets and let the bike carry your cargo. Or mount a Yepp Maxi child seat and bring your kids along for the ride.
Twist Grip Throttle
750W of power on-demand.
180 mm Mechanical Disc Brakes
Tektro Aries brakes provide you with strong stopping power, even in loose terrain.
48V, 14 Ah (672 Wh) with Lithium NMC Samsung 35E cells, rated for 800 charge cycles
Charger
48V, 2 Amp Rad Power Bikes smart charger, operates on 100V-240V AC power outlets
Controller
48V, 750W
Display
Backlit LCD with charge indicator, speedometer, odometer, trip odometer, pedal assist level, wattmeter, and more
750W brushless Shengyi direct drive hub motor with regenerative braking, 40 Nm of torque
Lights
Front: Standard Rad Power Bikes LED headlight
Rear: Integrated taillight with brake light
Pedal Assist
Intelligent 5 level pedal assist with 12 magnet cadence sensor
Half twist throttle
Wiring
Water resistant connectors and wiring harness
USB Ports
Display: 5V, 1 Amp
Tektro Aries (MD-M300)
Brake Levers
Aluminum alloy comfort grip levers with motor cutoff switch and integrated bell
Brake Pad Material
Sintered metal
Brake Rotors
Tektro 180 mm front and rear
Chain
KMC Z7
Crank Set
42T, 170 mm ProWheel Pioneer forged alloy, dual-sided aluminum bashguard
Derailleur
7-Speed Shimano Altus
Fenders
Included, black plastic front and rear, full coverage
Fork
Suntour spring fork, 100 mm travel, with lockout and preload adjustment
6061 aluminum
Freewheel
DNP 7-speed freewheel, 11-34T
Gearing
1 x 7-speed
Grips
Velo comfort rubber ergo
Handlebar
Custom formed aluminum
Headset
Semi-integrated, 1-1/8" straight steerer tube
Kickstand
Heavy-duty aluminum with wide plastic foot
Pedals
Wellgo B087 CrMo axle, forged aluminum platform with reflectors, standard 9/16" x 20 TPI threading
Racks
Front: Optional
Rear: Integrated, 60 lb carrying capacity, 16 mm tubing diameter
Weinmann Goliath, alloy, double wall, 36H
Saddle
Velo Plush with lifting handle
Seatpost
Promax, 350 mm x 27.2 mm
Seatpost Clamp
Quick release
Shifter
Shimano SL-TX50-7R thumb shifter, 7-speed
Spokes
12-gauge stainless steel
Stem
Zoom, 60º angle adjustment, 100 mm length, 88 mm height adjustment
Tires
Rad Power Bikes by Kenda K-Rad 26" x 2.3", K-Shield puncture-resistant liner
5'11"- 6'5"
Frame Size
18.5"
Handlebar Height
45"
Handlebar Reach
14.5"
Seat Height
28" - 37"
*Measured from bottom of the pedal stroke
Standover Height
31"
Total Length
70"
43"
Dropout Width
Front: 100 mm
Rear: 135 mm
Bottom Bracket Shell Width
68 mm
Square taper bottom bracket
Seat Tube Length
18.5"
Top Tube Length (effective)
23"
Headtube
7"
Chainstay
18"
700mm (28")
Crank Length
170 mm
Seatpost Diameter
27.2 mm
Max Tire Width
2.3"
Bike Weight
64 lb
Payload Capacity
275 lb
Rear Rack Capacity
60 lb
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.
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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.
Speedometer
Can be set to current speed, max speed, or average speed.
Wattmeter
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
Reliable, Smooth, Maintenance-Free Hub Motor
Using a brushless direct drive hub motor allows regenerative braking to be enabled as a standard feature. This allows the user to slow down when traveling downhill or coming to a stop while charging the battery in the process. Regenerative braking is automatically activated anytime you engage the brake levers, meaning you can take advantage of this amazing feature without having to do anything extra.
Motor Power
Max Motor Torque
Winner, Best Commuting Electric Bike of 2020
"It is no small wonder there are so many of these running around for both commuters and companies alike."
- ElectricBikeReview.com
Looking for something even more affordable?
The RadMission is a slick, stylish single-speed electric metro bike for city riders craving more excitement and utility than your average fixie -- and at a price of $1,099, it’s available at our lowest price point ever.
