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    MSRP
    $2,399
    Where to Buy
    $1

    At

    Category
    Folding, E-Bike
    Weight
    8.2 lbs (frame)
    Frame
    Aluminum
    Aluminum
    Wheels
    Aluminum
    Wheel Size
    20″
    Tektro Hydraulic Disc
    Bafang hub-drive
    672Wh
    X5
    Drivetrain
    Brand Site
    Summary
    The Surface 604 Twist is a 20″ aluminum frame folding e-bike with mid-range components and tektro hydraulic 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)

    24 mph

    Twist

    Highest gear

    (descending)

    Geometry
    Specs
    Frame

    6061 Aluminum Alloy

    Fork

    Rigid Aluminum Alloy, 135 mm Hub Spacing, 9 mm Axle with Quick Release Skewer

    Headset

    Integrated, Open Bearings, Quill, Straight 1-1/8"

    Stem

    Aluminum Alloy, Folding, 12° Forward Angle, 31.8 mm Clamp

    Handlebar

    Aluminum Alloy, 660 mm Length, Low-Rise, 6° Backsweep, 30 mm Rise

    Saddle

    Selle Royal Essenza Plus+

    Seatpost

    Aluminum Alloy with Forged Single-Bolt Clamp

    TypeRigid

    Pedals

    Wellgo K79 F265 Aluminum Alloy Platform with Integrated Pins, Folding, Black

    Grips

    Stitched Faux Leather, Ergonomic, Black

    Groupset
    Rear Derailleur

    SRAM X5 Short Cage

    Crank

    Samox, Forged Aluminum Alloy, 170 mm Length Crank Arms, Sealed Cartridge Bearings, Hollow Axle, 44 Tooth Steel Chainring

    Shifters

    SRAM X5 Triggers on Right (One-Way High, Three-Shift Low)

    Cassette

    SRAM 11-36 Tooth

    Brakes

    Tektro Auriga Hydraulic Disc with 180 mm Rotors, Dual-Piston Calipers, Three-Finger Tektro Levers with Motor Inhibitors and Brake Light Blink Activation and Adjustable Reach

    TypeTektro Hydraulic Disc

    Wheels
    Rims

    20"

    Spokes

    Stainless Steel, 13 Gauge, Black

    Tires

    CST Big Boat, 20" x 4.0" (98-406)

    Electric Components
    Motor

    Type: Hub, Output: 500, Details: Bafang RMG060.500.DC, Weight: 8 lbs

    Battery

    Watt Hours: 672 Wh, Details: Samsung 18650 3,500 mAh, Reention Casing, 48 Volt, Lithium-ion, 14 Amp Hrs, 8.2 lbs, Weight: 8.2 lbs

    Display

    Surface 604 Branded, Fixed, Adjustable Angle, 3.5" Color, Backlit LCD, USB Type A Charging Port on Bottom

    Charger

    1.5 lb 2 Amp Charger, Optional 4 Amp Fast Charger

    Accessories
    Lights

    Integrated Shiny 120 LED Headlight (120 LUX), Integrated Büchel Tivoli 2-LED Rear Light (Blinks When Braking)

    Fenders

    Plastic Fenders (100 mm Width)

    Racks

    Welded-On Rear Rack with Top Platform and Bungee Loops (50 lb Max Load)

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