Rad Power Bikes RadExpand 5

Name: Rad Power Bikes RadExpand 5
Brand: Rad Power Bikes

2025 UrbanCommuterFolding Electric bicycle Manufacturer page

Last known price: $1,599

Prices shown first for United States
Suspension: Rigid
Wheels: 20″
Drivetrain: 1 × 7 48t / 14–32t
Gear range: 229%
Battery: 672 Wh
Weight: 28.35 kg 62.5 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Mechanical disc

Rider height by size (cm)

Size guide

One Size 147.3–177.8

Components

7 of 29 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Aluminum Not identified

Electric system

4 parts

Battery

14Ah 672 Wh external battery, tested by ACT compliant to UL 2271 Not identified
Charger
- Rad Power Bikes
Display

LED display. See Display section below for details. Not identified
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. Not identified

Suspension

1 part

Fork

Fixed, Rad custom steel 135 mm hub width, 9 mm quick release, Please note that the Expand 5 may come with a front wheel that features a bolt on axle or quick release Not identified

Drivetrain

6 parts

Bottom bracket

100 mm shell, 164 mm spindle Not identified
Cassette

7-speed freewheel, 14-32T Not identified
Chain
- KMC
Crankset

48T with dual-sided chainring guard, 170 mm crank arms Not identified
Rear derailleur
- microSHIFT
RD-M26
Shifters
- microSHIFT Thumb Tap Shifters 3×7 – TS71 7 speeds

Brakes

3 parts

Brake levers
- Rad Power Bikes
Brakes

Mechanical caliper Not identified
Disc rotors

180 mm Not identified

Wheels and tires

3 parts

Rims

Aluminum alloy, 36 hole, Rim width: 60mm Not identified
Spokes

12-gauge stainless steel, black Not identified
Tires
- CST

Cockpit and contact points

7 parts

Grips

Ergonomic rubber comfort grips Not identified
Handlebar

Alloy, 27" wide Not identified
Headset

Semi-integrated, 1-1/8" straight steerer tube Not identified
Pedals

Composite platform, CrMo axle with reflectors, standard 9/16" x 20 TPI threading Not identified
Saddle
- Rad Power Bikes
Seatpost

Aluminum alloy, 390 mm x 27.2 mm Not identified
Stem

45 mm length, + 3º rise. Not identified

Other components

4 parts

Bell

Yes Not identified
Fenders

Full coverage front and rear fenders Not identified
Lights

Auto-on feature, Front: LED headlight, Rear: Integrated taillight with brake light Not identified
Racks

Integrated, 55 lb (25kg) carrying capacity Not identified

Sizes and geometry

1 size Open in the geometry plotter

Enter your height to highlight matching ranges.

Size One Size

Table

Geometry diagram unavailable

The drawing needs stack, head tube angle, seat tube angle, head tube length and bottom bracket drop / Bottom bracket height, which the manufacturer did not publish. Available facts remain in the table.

Size Reported by the manufacturer

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	406
Top tube lengthmm	597
Seat tube lengthmm	406
Chainstay lengthmm	457
Wheelbasemm	1143
Standover heightmm	406
Suspension and parts
Crank lengthmm	170

Not published by the manufacturer: Stack, Head tube length, Head tube angle, Seat tube angle, Front center, Bottom bracket drop, Bottom bracket height, Fork rake, Trail, Stack/reach ratio, Front travel, Rear travel, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Steel
Bicycle weight: 28.35 kg

62.5 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 48
Largest chainring: 48
Rear sprockets: 7
Smallest sprocket: 14
Largest sprocket: 32
Lowest gear: 30.0 in
Highest gear: 68.6 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Electric system

Battery capacity: 672 Wh

Additional specifications

Battery: 14Ah 672 Wh external battery, tested by ACT compliant to UL 2271
Tire clearance: Maximum tire width: 4″
Tire width: 4″
Travel: Front: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 20″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 11.5 km/h
Highest gear: 26.3 km/h

Total gear range 229%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 30.0–68.6 gear inches

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2025 builds
Specification	This bicycle Rad Power Bikes RadExpand 5	Rad Power Bikes RadExpand 5 Plus
Frame
Fork material	Steel	Not informed
Bicycle weight	28.35 kg	32.9 kg
Suspension
Suspension configuration	Rigid	Hardtail
Front travel	Not informed	50 mm
Brakes
Brake type	Mechanical disc	Hydraulic disc
Electric bicycle systems
Battery capacity	672 Wh	720 Wh
Other specifications
Suspension	Rigid	Hardtail
Tire clearance	Maximum tire width: 4″	Not informed
Wheel material	Aluminum	Not informed