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Upgraded to the Bosch Performance electric drivetrain for 300% more assistance and 65 Nm of torque, the Tern Vektron S10 folding e-bike is built to handle long, hilly commutes in rain, snow or shine.

  • Features

    • Bosch Performance motor with Purion display delivers pedal assist up to 20 mph, helping you carry groceries and tackle steep hills without the sweat
    • Purion onboard computer lets you switch between 5 different riding modes and displays handy info like speed, battery level and distance
    • Shimano Deore Shadow+ rear derailleur is streamlined and resilient to avoid damage while transporting the folded bike; clutch adjusts chain tension to avoid drops while riding
    • Go farther with the Bosch PowerPack 400 battery—it offers a range of up to 68 mi., depending on conditions and assist settings; battery weighs just 5.5 lbs.
    • Magura MT4 hydraulic disc brakes give you excellent stopping power in rain, snow or mud with the gentle pull of just 2 fingers
    • Andros™ patented adjustable stem lets you set your handlebar where you want in just seconds without tools; you can set your riding position to upright or long and low
    • Heavy-duty OCL+™ frame joint is built to exceed ISO 4210 and EN 15194 testing requirements; it stays stiff and strong during even the fastest commutes
    • Integrated Atlas V rack works seamlessly with one Thule Yepp Maxi or Yepp Nexxt Maxi child seat (not included)—no adapters needed; max load capacity is 59 lbs.
    • Porter+ saddle has a dual-density construction with gel cushioning to keep you comfortable while riding
    • GripPad™ underneath the saddle lets you grip the saddle nose confidently when you're rolling your bike around or put it on your shoulder to carry the bike
    • 360° of active lighting and 360° of reflectivity help you be seen from all angles when it's dark out
    • Bike resizes in seconds to fit riders from 4 ft. 10 in. to 6 ft. 5 in. (150–195 cm) so a single bike can be shared by the family
    • Easily fits on buses, subways and taxis for multimodal commuting
    • Specs and images are subject to change

    Imported.

    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 all Tern Electric Folding Bikes
  • Technical Specs

    Best Use

    Urban Cycling

    E-Bike Classification

    Class 1: pedal assist up to 20 mph

    Motor

    Bosch Performance

    Motor Type

    Mid-Drive

    Motor Torque (Nm)

    65 Newton meters

    Battery Type

    Lithium Ion

    Battery Capacity (Wh)

    400 watt hours

    Battery Removable

    Yes

    Charge Time (hrs)

    2.5-4 hours

    Pedal Assist Range

    34-68 miles

    Bike Frame Material

    Aluminum

    Frame

    7005-AL, OCL+ Joint

    Step-Through

    No

    Bike Suspension

    No Suspension

    Fork

    Hydroformed 6061 aluminum

    Crankset

    6061 aluminum crankarms

    Bottom Bracket

    Motor Integrated

    Shifters

    Shimano Deore

    Rear Derailleur

    Shimano Deore Shadow+

    Rear Cogs

    Shimano 10-speed, 11-36T

    Number of Gears

    10 gear(s)

    Brake Type

    Hydraulic Disc Brake

    Brakes

    Magura MT4 hydraulic disc

    Brake Levers

    Magura hydraulic disc

    Rims

    Kinetix Comp for disc

    Front Hub

    Novatec, sealed cartridge bearing, disc

    Rear Hub

    Novatec, sealed cartridge bearing, disc

    Wheel Size

    20 inches

    Tires

    Schwalbe Big Apple 20 x 2.15 in. (55-406), puncture protection, Reflex

    Tire Width

    2.15 inches

    Handlebar Shape

    Flat Bar

    Handlebar

    Tern Andros adapted 6061 aluminum

    Stem

    Tern Andros, adjustable

    Seat Post

    Tern Telescope, 34.9/30.9 mm, 2014 aluminum

    Saddle

    Tern Porter+

    Pedals

    MKS EZY

    Headset

    Flux Pro, angular contact bearings, Physis integrated

    Chain

    10-speed DHT for e-bike with GST corrosion-resistant coating

    Weight

    48 lbs. 9.6 oz.

    Bike Weight

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

    Gender

    Unisex

    Sustainability

    Contains recycled materials

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