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    MSRP
    $2,399
    Where to Buy
    $1

    At

    Category
    Folding, E-Bike
    Weight
    59.0 lbs
    Frame
    Aluminum
    Aluminum
    Wheels
    Aluminum
    Wheel Size
    20″
    Tektro Hydraulic Disc
    Bafang 500W 80Nm hub-drive
    672Wh
    X5
    Drivetrain
    1 × 9
    Brand Site
    Summary
    The Surface 604 Twist is a 20″ aluminum frame folding e-bike with modest 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, 135mm Hub Spacing, 9mm Axle with Quick Release Skewer

    Headset

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

    Stem

    Aluminum Alloy, Folding Telescoping Height Base 240mm to 340mm, 8° Forward Angle, 31.8mm Clamp

    Handlebar

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

    Samox, Forged Aluminum Alloy, 170mm 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

    9 Speed 1x9 SRAM X5 Short Cage Derailleur, SRAM 11-34 Tooth Cassette

    Brakes

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

    TypeTektro Hydraulic Disc

    Wheels
    Rims

    6061 Aluminum Alloy, 80mm Outer Width, 36 Hole, Black

    Spokes

    Stainless Steel, 13 Gauge, Black

    Tires

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

    Electric Components
    Motor

    Weight: 8 lbs (3.62 kg), Brand: Bafang RMG060.500.DC, Type: Rear-Mounted Geared Hub, Nominal Output: 500 watts, Peak Output: 750 watts, Torque: 80 Newton meters

    Battery

    Weight: 8.2 lbs (3.71 kg), Brand: Samsung 18650 3,500mAh, Reention Casing, Voltage: 48 volts, Amp Hours: 14 ah, Watt Hours: 672 wh, Chemistry: Lithium-ion

    Display

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

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