RadCity 4

Electric Commuter Bike

Shipping: Free to the lower 48 states
$200 off your purchase when you buy any 2 ebikes with code 2xEbikeCombo
Winner, Best Commuting Electric Bike of 2020
Ebikes from Rad Power Bikes were named the Best Electric Bikes in 7 categories by ElectricBikeReview.com, the most of any electric bike company.
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Hear from Real Rad Owners

"Shocked by the level of quality for the price. It’s amazing."
- Jeremy S.
"It's the best purchase I've made in years! Great customer service also!"
- Stephen S.
"This is an awesome bike. Has lots of power and handles wonderfully."
- Joanna P.

Most popular accessories

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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.

Technical specs

48V, 14 Ah (672 Wh) with Lithium NCA 18650 Samsung 35E cells, rated for 800 charge cycles

48V, 2 Amp Rad Power Bikes smart charger, operates on both 110V and 230V AC power outlets

48V, 750W

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

Hub Motor
750W brushless Shengyi direct drive hub motor with regenerative braking, 40 Nm of torque

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

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 and integrated bell

Brake Pad Material
Sintered metal

Brake Rotors
Tektro 180 mm front and rear


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

7-Speed Shimano Altus

Included, black plastic front and rear, full coverage

Suntour spring fork with lockout and preload adjustment, 80 mm travel, 100 mm hub width, 9 mm quick release

6061 aluminum

DNP 7-speed freewheel, 11-34T

1 x 7-speed

Velo comfort rubber ergo

Custom formed aluminum

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

Front: Optional
Rear: Integrated, 45 lb carrying capacity, 16 mm tubing diameter

Weinmann Goliath, alloy, 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

Zoom, 60º angle adjustment, 100 mm length, 88 mm height adjustment

Rad Power Bikes by Kenda K-Rad 26" x 2.3", K-Shield puncture-resistant liner

Recommended Rider Heights
5'11"- 6'5"

Frame Size

Handlebar Height

Handlebar Reach

Seat Height
28" - 37"
*Measured from bottom of the pedal stroke

Standover Height

Total Length


Dropout Width
Front: 100 mm
Rear: 135 mm

Bottom Bracket Shell Width
68 mm
Square taper bottom bracket

Seat Tube Length

Top Tube Length (effective)



Handlebar Width
700mm (28")

Crank Length
170 mm

Seatpost Diameter
27.2 mm

Max Tire Width

Bike Weight
64 lb

Payload Capacity
275 lb

Rear Rack Capacity
45 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:

  1. Medium-width hardcover book
  2. Tape measure
  3. A wall you can stand against
  4. 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.

Key Features

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.

Display Technology
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.

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
5-6 Hours
To Fully Charge
672 Wh
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
40 Nm
Max Motor Torque
Our RadCity community is rad. And massive.
@radpowerbikes #radcity #riderad
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

Watch the Review
Looking for something more accessible?

The RadCity Step-Thru 3 is a great option if you want many of the same features as the RadCity but with a much lower stand over height.
Explore RadCity Step-Thru

Customer Reviews

Based on 415 reviews
City 4 is all I had hoped

While this is my first Ebike, I wanted something that would provide some assistance on the hills of Vermont. I have had a 21 speed hybrid bike for several years, and the hills always turn a glorious ride into a draining chore. I find that the Rad City is a way to take the edge off the steep hills we have here. The quality of the bike is quite good, and I have found the Customer Support team to be exceptionally responsive to any question.
For my type of riding, which is mostly paved or cinder bike paths, and city streets, this is the perfect bike. Others who go off road frequently may wish to select another model. The fat tires seem to have a " cool factor" to them, but I'm not there yet.

E-bikes gaining popularity

Bought this bike for my wife to commute to her various activities within our 55+ community. She loves the sturdiness and the pedal assist. I'm a traditional biker but I'll admit I've "borrowed" it a few times for fun.

RadCity for the win!

I love my Radcity 4 bike with a passion. I live in LA, which is relatively flat, and I'm able to whisk around the city with ease. What I love about the bike are the five-level intelligent assist and the on-demand torque. I feel empowered to explore many miles away from home on my bike. I also like how easy it is to remove the front tire and transport my bike in my car when I want to drive out to the beach and ride along LA's coastline. I visited the showroom and Seattle and got a chance to test a few models, and I like the body size and weight of the Rad City4 over the RadRover, which is better suited for off-road and the RadRunner, which sits lower to the ground.

The only drawback is that when using the pedal assist, it limits you to riding at 20 mph. I wish I could exceed that when pedaling. Besides that, I'm excited to maneuver around LA without hopping in my car and filling up my gas tank.

Disclaimer - I was gifted my bike by Rad Power Bikes for testing and review purposes, but my opinions are my own.

Riding in retirement

I saw the ads for the RAD bikes and decided to check them out. Recently retired, I have found a need for exercise. The RadCity 4 provides me the exercise and secondary transportation for picking up small things and run those close errands. It is also saving mileage on my car. The pedal assist is great for those times I find myself running low on energy. The bike is very good quality and the assembly was easy. I'm looking forward to years of fun riding my RCv4.

My new love

I love my rad bike! It’s opened up the opportunity for new adventures for me as a 70 year old active woman and I couldn’t be happier!


RadCity Electric Commuter Bike Version 4

It's called Rad for a reason.

Absolutely love this bike. Use it daily for commuting purposes and find it well designed; frame is large enough to accommodate a 6'5" man, controls are easy to use, fenders keep you clean and dry, the rack fits aftermarket panniers nicely and the seat is comfy. I've always wanted one but only recently could justify it. It's rad.

Wish there were a smaller size!

It's really great, but just a teency bit too big for me. I really wish they made a smaller version.


With my new RadCity 4 and the longer rides it affords I am discovering bike pathways I previously didn't know existed in our bike-friendly city. Perhaps, more importantly, I'm now able to easily pass cycling college students who used to say, "Who's that old guy struggling on the bike?" but now exclaim, "Who's that rad dude on the ebike?" To belabor the obvious, I'm delighted with my RadCity 4!

More distance with ease!!!

I bought this bike so that I could extend my riding range. I’m 62 years old and my knees aren’t what they used to be. Riding my Rad Commuter allows me to traverse any terrain in comfort and ease. I used to have to wait for a day without any wind. Now I can’t wait to ride in any dry condition. I get a great workout with low impact and can ride 30 to 40 miles at a time now. I can’t say enough about how much I like this bike!