Tern HSD S8i Active Plus 2021 – Electric Folding Bike



      Enorously Useful. Surprisingly Smaller.

      The HSD is mighty but mini: It’s easy to handle, easy to share, extremely comfortable to ride, carries a whole lot of cargo—and all of this in a compact design that’s shorter than a standard bicycle.

      Easy to Handle

      Whether you’re riding, storing, or moving it around, the HSD is a breeze to handle. It’s shorter than a regular bike and its weight is the same as a regular ebike.

      Kiddie Carry
      Bring the kiddo. The HSD’s extra-long Atlas H Rack gives plenty of heel clearance and room for your kiddo to enjoy the view rather than being smushed up against your back. The rack is rated to 60 kg (132 lb), so when paired with the right Passenger System accessories, the HSD is ready for your growing family.

      Flat Fold
      Fifteen seconds and the HSD transforms into a flat package that’s perfect for fitting into SUVs, station wagons, or bus storage compartments.

      Ready to Haul
      Despite its diminutive stature, the HSD is a mid-sized cargo bike with some serious hauling capacity. With a maximum gross vehicle weight of 170 kg (374 lb) and an XL-sized Atlas H Rack, it’ll carry a week’s worth of groceries or camping equipment for the weekend. It even has a dedicated trailer mount, so adding extra cargo is a cinch.

      Vertical Parking
      The HSD flips up for convenient vertical parking. Take it upstairs in an elevator and park it inside at home or at work—it needs just a wee bit of floor space.

      A Comfier Ride
      With a longer wheelbase and extra-low center of gravity, the HSD is smoother and more stable than your standard ebike. Easy-Step frame design paired with an adjustable stem and seatpost offers a comfortable upright riding position for both taller and shorter riders. Add a suspension fork and balloon tires and even the meanest cobblestone roads are comfortably navigated.


      • Bosch® Active Line Plus motor with Purion display
      • 400 Wh battery for a range of up to 110 km (69 mi)
      • Custom Suntour suspension fork
      • Shimano® Nexus 8 internal-gear hub
      • Magura® MT4 hydraulic disc brakes
      • Gates Carbon Drive® CDX belt
      • Abus® keyed-alike frame lock
      • Fits riders from 150 to 195 cm (4’11” – 6’5”)
      • Fits one Thule® Yepp Maxi, Yepp Nexxt Maxi, or Bobike® GO Maxi child seat—no adapters needed


      Occasionally, without notice, manufacturers change product design and/or specifications.


      Frame: Tern HSD, 6061-AL, patented design, Tern sliding dropouts
      Fork: Suntour custom for Tern, 1.5″ tapered Chromoly steerer, 32 mm stanchions, Thru-axle, 70 mm travel
      Headset: Tern Flux Pro Taper, 1.5″, angular contact bearings, Physis integrated
      Stem: Tern Andros (G2), adjustable, forged construction, patented technology
      Bars: Tern Sweep, 6061-AL, Tern Andros adapted
      Front Brake: Magura® MT4 hydraulic disc brakes
      Rear Brake: Magura® MT4 hydraulic disc brakes
      Shifters: Shimano Nexus 8
      Speed: 8
      Rims: Tern Atlas H, wide 35 mm
      Spokes: Stainless steel
      Front Tyre: Schwalbe Big Ben, 55-406, RaceGuard puncture protection, ECE-R75 ebike certification
      Rear Tyre: Schwalbe Big Ben, 55-406, RaceGuard puncture protection, ECE-R75 ebike certification
      Seat Post: Tern Telescope, 34.9/30.9 mm, 2014-AL
      Saddle: Tern HSD
      Chainset: Tern HSD custom, Gates CDX CNC machined beltring
      Bottom Bracket: Motor integrated
      Chain: Gates Carbon Drive CDX belt
      Cassette: Gates CDX, precision CNC machined cog
      Pedals: Urban with non-slip surface
      Weight: 170 kg (374 lbs)
      Battery (Wh): Bosch PowerPack 400
      Motor: Bosch Active Line Plus (Gen 3), max speed 25 kph (EU)
      User Interface: Bosch Purion, 4 mode selectable, walk assist


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