RadMini Step Thru
Buy Now - $1,499
RadMini Step-Thru 2
Electric Folding Fat Bike
Shipping: Free to the lower 48 states

$200 off your purchase when you buy any 2 ebikes with code 2xEbikeCombo
View All Technical Specs

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 Rugged Space Saver

The new RadMini Step-Thru 2 encompasses so much of our design philosophy: to make bikes that combine power with ease, convenience, and accessibility. With a streamlined throttle design and handlebars that have been upgraded for a more comfortable, ergonomic ride, we’ve taken that mindset to a whole new level.

The RadMini Step-Thru features our lowest standover height of any model. Add to that the adjustable handlebar stem and the most robust folding mechanism ever built, and you've got a remarkably accessible fat tire ebike.

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 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

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
48T, 170 mm ProWheel Pioneer forged alloy, dual-sided aluminum bashguard

7-Speed Shimano Altus

Front and rear

RST spring fork with lockout and preload adjustment, 60 mm travel, 135 mm hub width, 9 mm quick release
6061 aluminum

DNP 7-speed freewheel, 11-34T

1 x 7-speed

Durable imitation leather ergonomic grips

Custom formed aluminum, 26" wide, 2.5" rise

Semi-integrated, 1-1/8" straight steerer tube

Heavy-duty aluminum with wide plastic foot

Wellgo P256 CrMo axle, forged aluminum folding 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

High-rise folding stem with 3" vertical adjustment

Rad Power Bikes by Kenda K-Rad 20" x 3.3", K-Shield puncture-resistant liner
Geometry & Sizing
Recommended Rider Heights
4'10" - 5'10"

Frame Size

Handlebar Height
45" - 48" (adjustable)

Handlebar Reach

Seat Height
24" - 31"
*Measured from bottom of the pedal stroke

Standover Height

Total Length

Dropout Width
Front: 135 mm
Rear: 170 mm

Bottom Bracket Shell Width
100 mm
Square Taper Bottom Bracket

Seat Tube Length

Top Tube Length (effective)


Handlebar Width
660mm (26")

Crank Length
170 mm

Seatpost Diameter
27.2 mm

Max Tire Width

Bike Weight
69 lb

Payload Capacity
275 lbs

Folded Dimensions (LxWxH)
42" x 23" x 30"
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.
Twist Grip Throttle
750W of power on-demand.
Front Suspension Fork
Our custom Rad Power Bikes RST suspension fork has 60 mm of travel, preload adjustment, and lockout.
The Strongest Hinge Ever Made for a Folding Ebike
Over-built on purpose, the primary folding hinge has multiple safety redundancies to help prevent accidental unlatching and ensure the RadMini Step-Thru feels solid and secure when locked properly.
Low-Step Frame
Featuring a 16" stand over height, this bike is perfect for those needing a more approachable package without sacrificing features or functionality.
Display Technology
Battery Life
USB Charging
Pedal Assist Level
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 lbs, 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

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.
Motor Power
80 Nm
Max Motor Torque
Our RadMini community is rad. And massive.
@radpowerbikes #radmini #riderad
Looking for something more traditional?

The RadMini 4 is a great option if you want many of the same features as the RadMini Step-Thru but with a mid step frame.
Explore RadMini

Customer Reviews

Based on 130 reviews
My wife’s mini

My wife hasen’t had much time getting used to it , at first she was very intimidated, but we spent the weekend in our motorhome and did a lot of riding, she is getting more confident now and becoming comfortable

Dave’s Rad Mini ST 2020 Review

Very solid feeling ride. First 100 miles have gotten very comfortable with using assist levels, good disk brakes, limited throttle at start up, seat & handlebar adjustment, etc. Exceptionally comfortable and secure ride. No mechanical issues. Added under seat bag, throttle thumb control and rear Rad rack.

Rad mini

Love it have not ridden it yet still winter her and to much salt I did ride in my heated garage can’t wait to hit the road with it

New Rad mini step thru folding

Only have 10 miles. Keep in mind the phrase “only get one chance to make a first impression “. Y’all knocked it out of the park. Fit and finish awesome!! Ride smooth and electronics perform beautifully. Every ride draws admiration. With your referral program , If just some buy I’ll have start on our second one!!
Thx for a quality product!!


I LOVE my rad mini. It is more than I could have hoped for. They didn’t offer the step thru when I got mine and it is hard to throw my leg over, but I make I work. The seat is terribly uncomfortable but other than that it is near perfect!!!!!

Great ride

Rides great, a little heavy and hard to fold.


The bike is wonderful. The only problem is your feet can slip off the pedal to easy. My foot slipped off the pedal and I crashed on my second ride. Three broke toes and 2 broken ribs. I will replace the pedals on the bike but other than that I live it.

RadMini Step-Thru

The bike was delivered on time and without any damage. After watching the video on line it was easy to put together. I live in Minnesota so the bike is parked in my living room until it is warm enough outside to ride it. Think Spring!

Great all around e-bike for casual riders!

Historically, I've been a very casual bike rider and wanted an electric bike so I could go longer distances in shorter times and ditch my car. I'm having so much fun on my RadMini. I've been using it to ride to the movie theater, grocery store, and work. I love not dealing with traffic and taking trails to see more trees and the creek along the way. The throttle is great for getting a quick assist on take off and the peddle assist is perfect for balancing exercise with the speed of the motor.

I did a bunch of research before I chose the RadMini. The RadMini was the right balance between features, price, and maintainability. I felt like Rad Power Bikes will be around for a while and that I'd be able to get replacement parts when I need them. I like that they've standardized on a battery and that I can order anything I need through their web site. You can get a cheaper e-bike, yes, but it won't come with the level of support or replacement parts you get with Rad. I also looked at more expensive bikes, but I didn't see any compelling reason to buy one over the Rad.

The one issue I've had with the RadMini was finding a Panieer bag to fit my bike. I bought the rear rack from Rad, but did not like their bag option. So after ordering a bag from Amazon, I came to discover that Rad's rear rack pipe diameter is much larger (~20mm) than common rear racks. So most bags you can order will not fit. I wound up getting an Ortlier bag, which was quite expensive, as well as their attachment kit for e-bikes. I think you can buy a more standard rack to fit on Rad's bikes, but I didn't try that since I'd already installed Rad's rack. Otherwise, I've been very happy with my purchase.

Finally, I chose the RadMini Step-Thru over other Rad models because 1) I really like the look of it, and 2) I like the foldability so that I could transport it more easily when needed.

The RadMini has really brought a great change into my life and highly recommend it if you're ...

RadMini V4 and RadMini Step-Thru V2

We've had a great time with these bikes. I'm very happy with our purchase. They're built well and have several useful options available. I was a little disappointing with the change to the thinner rim and tires with the 2020 model compared to last years model. We ride them in the desert and come across loose sand quite a bit and I think the wider tires would have been better for us. I did replace the tires on mine with a set of Krusades and it did help. Still, they're fantastic E-bikes and they've enabled us to get out and explore our surroundings in a way we couldn't have before. Thanks Rad Power Bikes!