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    MSRP
    $1,499
    Where to Buy
    $1

    At

    Category
    Folding, E-Bike
    Weight
    67.0 lbs
    Frame
    Aluminum
    Wheels
    Aluminum
    Wheel Size
    20″
    Tektro Mechanical Disc
    750W 80Nm hub-drive
    672Wh
    Tourney, Altus
    Drivetrain
    1 × 7
    Suspension
    Hardtail
    Front Travel
    80mm
    Brand Site

    radpowerbikes.com

    Summary
    The Rad Power Bikes RadMini 4 is a 20″ aluminum frame folding e-bike with modest components and tektro mechanical disc brakes.

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    Insights
    Gear Range

    A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

    Lowest gear

    (climbing)

    26 mph

    RadMini 4

    Highest gear

    (descending)

    Geometry
    Specs
    Frame

    6061 aluminum

    Tire Clearance4"

    Fork

    spring fork, 80 mm travel, with lockout and preload adjustment

    Travel80mm

    Spring TypeCoil

    Bottom Bracket

    100 mm, Square Taper Bottom Bracket

    Headset

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

    Stem

    High-rise folding stem with 3" vertical adjustment

    Handlebar

    Custom formed aluminum, 25" wide, 2.5" rise

    Saddle

    Plush with lifting handle

    Seatpost

    350 mm x 27.2 mm

    TypeRigid

    Pedals

    forged aluminum folding platform with reflectors, standard 9/16" x 20 TPI threading

    Grips

    Durable imitation leather ergo

    Groupset
    Rear Derailleur

    7-Speed Shimano Altus

    Crank

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

    Shifters

    Shimano SL-TX50-7R thumb shifter, 7-speed

    Cassette

    7-speed freewheel, 11-34T

    Chain

    Z7

    Brakes

    Tektro Aries (MD-M300)

    TypeTektro Mechanical Disc

    Brake Levers

    Aluminum alloy comfort grip levers with motor cutoff switch and integrated bell

    Wheels
    Rims

    Double wall, 36H

    Spokes

    12-gauge stainless steel, black

    Tires

    CST Big Boat 20" x 3", puncture-resistant liner *tires received may not include branding

    Disc Rotors

    Tektro 180 mm front and rear

    Electric Components
    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.

    Battery

    672 Wh

    Display

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

    Charger

    48V, 2 Amp Rad Power Bikes smart charger, operates on 100V-240V AC power outlets

    Accessories
    Lights

    Front: Standard Rad Power Bikes LED headlight, Rear: Integrated taillight with brake light

    Fenders

    Front and rear

    Racks

    Optional

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