Tern HSD P9 Electric Bike

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Mighty but mini, the Tern HSD P9 electric bike is easy to handle and comfortable to ride, and it can carry a whole lot of cargo—all in a compact design that's shorter than a standard bicycle.

  • Features

    • Bosch® Active Line Plus motor with Purion display delivers pedal assist up to 20 mph, helping you carry groceries and tackle steep hills, without the sweat
    • Go farther with the Bosch PowerPack 400 battery—it offers a range of up to 69 mi., depending on conditions and assist settings
    • Custom Suntour suspension fork smooths out rough roads with 70mm of travel
    • 9-speed Shimano® Alivio Shadow RD derailleur provides crisp shifting
    • Shimano hydraulic disc brakes deliver consistent, powerful braking, even in wet conditions
    • ABUS® keyed-alike frame lock offers light security for quick stops and can be matched to use the same keys as a higher-security ABUS lock (not included)
    • Fits riders from 4'11" to 6'5" (150 to 195 cm)
    • Fits one Thule® Yepp Maxi, Yepp Nexxt Maxi, or Bobike® GO Maxi child seat—no adapters needed
    • Specs and images are subject to change


    Free Adjustment Period:
    New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
    View the Tern HSD Product Line View all Tern Electric Folding Bikes
  • Technical Specs

    Best Use

    Urban Cycling

    E-Bike Classification

    Class 1: pedal assist up to 20 mph


    Bosch Active Line Plus, 250W

    Motor Type


    Motor Torque (Nm)


    Battery Type

    Lithium Ion

    Battery Capacity (Wh)

    400 watt hours

    Battery Removable


    Charge Time (hrs)

    1.5-3.5 hours

    Pedal Assist Range

    26-69 miles

    Bike Frame Material



    6061 aluminum



    Bike Suspension

    Front Suspension


    Suntour custom for Tern

    Fork Travel

    70 millimeters


    Tern HSD custom

    Bottom Bracket

    Motor integrated


    Shimano Alivio

    Rear Derailleur

    Shimano Alivio Shadow

    Rear Cogs

    Shimano 9-speed, 11-32

    Number of Gears


    Brake Type

    Hydraulic Disc Brake


    Shimano hydraulic disc

    Brake Levers

    Shimano hydraulic


    Tern Atlas H, Cargo

    Front Hub

    Novatec, thru axle, sealed bearings

    Rear Hub

    Shimano disc

    Wheel Size

    20 inches


    Schwalbe Big Apple 20 x 2.2 in. (55-406mm)

    Tire Width

    2.2 inches

    Handlebar Shape

    Flat Bar


    Tern Sweep, 6061-AL, Tern Andros Adapted


    Tern Physis 3D with Andros Stem

    Seat Post

    Tern Telescope, 34.9/30.9mm, 2014-AL


    Tern HSD


    Urban platform with nonslip surface


    Tern Flux, Cartridge Bearings


    9-speed DHT for eBike with GST corrosion-resistant coating


    56 lbs. 8 oz.

    Bike Weight

    Bike weight is based on median size, as sold, or the average of two median sizes.



  • Reviews
    12 reviews with an average rating of 4.8 out of 5 stars

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