Rad Power Bikes RadMini 4

2022 UrbanCommuterFolding Electric bicycle Manufacturer page

Last known price: $1,499

Prices shown first for United States
Fork travel: 80 mm
Wheels: 20″
Drivetrain: 1 × 7 48t / 11–34t
Gear range: 309%
Battery: 672 Wh
Weight: 30.39 kg 67.0 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Mechanical disc

Rider height by size (cm)

Size guide

OS 157.5–188

Components

8 of 28 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

6061 aluminum Not identified

Electric system

4 parts

Battery

672 Wh Not identified
Charger
- Rad Power Bikes
Display

Backlit LCD with charge indicator, speedometer, odometer, trip odometer, pedal assist level, wattmeter, and more Not identified
Motor

750W brushless geared hub motor with 80 Nm of torque, 5:1 planetary gear reduction. 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

spring fork, 80 mm travel, with lockout and preload adjustment Not identified

Drivetrain

6 parts

Bottom bracket

100 mm, Square Taper Bottom Bracket Not identified
Cassette

7-speed freewheel, 11-34T Not identified
Chain

Z7 Not identified
Crankset

48T, 170 mm forged alloy, dual-sided aluminum bashguard Not identified
Rear derailleur
- Shimano Altus
Shifters
- Shimano Tourney SL-TX50-7R 7 speeds
SL-TX50-7R

Brakes

3 parts

Brake levers
- Bell
Brakes
- Tektro
MD-M300
Disc rotors
- Tektro

Wheels and tires

3 parts

Rims

Double wall, 36H Not identified
Spokes

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

Cockpit and contact points

7 parts

Grips

Durable imitation leather ergo Not identified
Handlebar

Custom formed aluminum, 25" wide, 2.5" rise Not identified
Headset

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

forged aluminum folding platform with reflectors, standard 9/16" x 20 TPI threading Not identified
Saddle

Plush with lifting handle Not identified
Seatpost

350 mm x 27.2 mm Not identified
Stem

High-rise folding stem with 3" vertical adjustment Not identified

Other components

3 parts

Fenders

Front and rear Not identified
Lights
- Rad Power Bikes
Racks

Optional Not identified

Sizes and geometry

1 size Open in the geometry plotter

Enter your height to highlight matching ranges.

Size OS

Table

Geometry diagram unavailable

The drawing needs stack, head tube angle, seat tube angle 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	356
Top tube lengthmm	584
Seat tube lengthmm	406
Head tube lengthmm	121
Chainstay lengthmm	483
Wheelbasemm	1143
Standover heightmm	699
Suspension and parts
Crank lengthmm	170

Not published by the manufacturer: Stack, 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
Bicycle weight: 30.39 kg

67.0 lb

Suspension

Suspension configuration: Hardtail
Front travel: 80 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 48
Largest chainring: 48
Rear sprockets: 7
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 28.2 in
Highest gear: 87.3 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: 672 Wh
Fork spring: Coil
Tire clearance: Maximum tire width: 4″
Tire width: 3″
Wheel material: Aluminum
Wheel size: 20″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 10.8 km/h
Highest gear: 33.4 km/h

Total gear range 309%

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: 28.2–87.3 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 2022 builds
Specification	This bicycle Rad Power Bikes RadMini 4	Rad Power Bikes RadMini	Rad Power Bikes RadMini Step-Thru 2
Frame
Bicycle weight	30.39 kg	27 kg	31.3 kg
Drivetrain
Smallest chainring	48	42	48
Largest chainring	48	42	48
Lowest gear	28.2 in	24.7 in	28.2 in
Highest gear	87.3 in	76.4 in	87.3 in
Other specifications
Battery	Capacity: 672 Wh672 Wh	Capacity: 672 Wh48V, 14 Ah (672 Wh) with Lithium NMC Samsung 35, rated for 800 charge cycles	Capacity: 672 Wh672 Wh
Tire clearance	Maximum tire width: 4″	Maximum tire width: 4″	Maximum tire width: 4.25″