Easy to get on & off
As the smallest ebike in our lineup, you can simply step thru and ride. No need to swing your leg over the saddle — or struggle to make it over your gear.
We lightened the load
Our engineers zeroed in on reducing the bike's weight, making it even easier to fold, lift, and store.
Fearlessly fun
Dirt-caked roads, look out. Rugged fat tires help you tackle rough terrain.
An RV-ready ebike
In a tight spot? The RadExpand is a smart fit for RVs, small apartments, or anywhere else you may be short on space.
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LED panel that includes pedal assist controls and battery charge levels.
Electronics
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Battery
14Ah 672 Wh external battery
Bikes shipped to NYC are compliant with UL 2849 and 2271. -
Charger
48V, 2 Amp Rad Power Bikes smart charger, operates on 100V-240V AC power outlets
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Display
LED display. See Display section below for details.
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Hub Motor
Rear hub 750W
Stated wattage is the manufacturer’s rated power capacity. Actual power-to-ground wattage is under 750W to ensure ebike regulatory compliance and may vary depending on riding conditions. -
Lights
Auto-on feature
Front: LED headlight
Rear: Integrated taillight with brake light -
Pedal Assist
Pedal cadence sensor, 4 PAS Levels, plus a zero assist option
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Range
Estimated 25 - 45 miles per charge
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Throttle
Half twist throttle
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USB Port
No port
To ensure uninterrupted shipping, some parts may differ from those listed. Rest assured, our engineers rigorously test each component to guarantee quality and compatibility.
Components
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Bell
Yes
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Brake System
Mechanical caliper
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Brake Pads
Semi-Metallic compound
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Brake Rotors
180 mm
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Crank Set
48T with dual-sided chainring guard, 170 mm crank arms
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Derailleur
7-Speed MicroShift RD-M26
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Fenders
Full coverage front and rear fenders
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Fork
Fixed, Rad custom steel 135 mm hub width, 9 mm quick release
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Frame
Aluminum
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Freewheel/Cassette
7-speed freewheel, 14-32T
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Gearing
1x7 speed
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Grips
Ergonomic rubber comfort grips
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Handlebar
Alloy, 27" wide
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Kickstand
Side-mounted, adjustable lean angle
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Pedals
Composite platform, CrMo axle with reflectors, standard 9/16" x 20 TPI threading
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Rear Rack
Integrated, 55 lb (25kg) carrying capacity
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Saddle
Rad Power Bikes with lifting handle
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Seatpost
Aluminum alloy, 390 mm x 27.2 mm
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Seatpost Clamp
31.8 mm diameter
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Shifter
MicroShift TS71-7, 7-speed thumb shifter
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Stem
45 mm length, + 3º rise.
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Tires
CST BFT 20" x 4.0"
To ensure uninterrupted shipping, some parts may differ from those listed. Rest assured, our engineers rigorously test each component to guarantee quality and compatibility.
Geometry
| Title | Text |
|---|---|
| Rider Heights | 4'10" - 5'10" (Approx. bike inseam between 24.5" - 32.25") |
| Bike Weight | 62.5 lb, 54.8 with battery removed |
| Payload | 275 lb |
| Rear Rack Payload | 59 lb |
| Folded Dimensions | 29H x 25W x 41L" |
| Handlebar Height | 45-48" |
| Reach | 16" |
| Seat Height | From ground: 29"–36" From pedal bottom stroke: 24" - 31" |
| Standover Height | 16" |
| Total Length | 68" |
| Wheelbase | 45" |
| Seat Tube Length |
16" |
What to Measure
Your “bike inseam” — or inside leg length — is the distance between your body where it sits on your bike saddle and the ground.
It’s typically an inch or two longer than the length of your trousers, but 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.
