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.
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.
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.
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|
|Rims:||Tern Atlas H, wide 35 mm|
|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|
|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|