HSD S8i

Enormously Useful. Surprisingly Smaller.
MSRP $4,099.00
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  • 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
  • 20" wheels
Electric
Top-Tier

Product Reviews

Broadsheet

But what surprised me most is how much this bike has improved my everyday life. I know what you’re thinking. An eBike? In a city as flat as Melbourne? Is that really necessary? Fair enough. But trust me, you think it won’t make a difference – until it does.

Die Welt Reiseguide

Why not ditch the car altogether and start the journey on your doorstep? If it's not a round trip, the compact touring bike fits easily into the bike compartments of Deutsche Bahn and the like.

Camping

A compact bike makes life easier when you're out and about: just dash to the bakery in the morning, explore the surroundings around the campsite or go on excursions: All this works wonderfully with the HSD S8i from Tern.

Specifications

General Info
Speeds:
1 x 8
Weight:
25.4 kg (56 lb)
Gear Inches:
31" - 95" (2.47 - 7.56 m)
Folding Size:
163 × 40.5 × 86 cm (64.2 × 15.9 × 33.9 in)
Folding Time:
5 sec
Frame Sizes:
One size
Distance: Seatpost to Handlebar:
49 - 59 cm (19.3 - 23.2 in)
Distance: Saddle to Pedal:
69 - 105 cm (27.2 - 41.3 in)
Suggested Rider Height:
150 - 195 cm (59.1 - 76.8 in)
Max Gross Vehicle Weight:
170 kg (374.8 lb)
Max Rider Weight:
120 kg (264.6 lb)
Frame
Frame:
Tern HSD, 6061-AL, patented design, Tern sliding dropouts, EFBE Tri-Test approved: 170 kg
Fork:
Suntour custom for Tern, 1.5" tapered Chromoly steerer, 32 mm stanchions, Thru-axle, 70 mm travel, EFBE tested for 170 kg
Cockpit
Handlepost:
Tern Physis 3D (G2), 3D forged, 5 patented technologies, 12°, 290 mm
Stem:
Tern Andros (G2), adjustable, forged construction, patented technology
Headset:
Tern Flux Pro Taper, 1.5", angular contact bearings, Physis integrated
Handlebar:
Tern Sweep, 6061-AL, Tern Andros adapted
Grips/Bar Tape:
Ergon
Saddle:
Tern HSD
Seatpost:
Tern Telescope, 34.9/30.9 mm, 2014-AL
Seatpost Clamp:
Tern Collar, 6061-AL, 2pc
Brakes
Front Brake:
Magura MT4, hydraulic disc, 180 mm rotor
Rear Brake:
Magura MT4, hydraulic disc, 160 mm rotor
Brake Levers:
Magura, hydraulic
Brake Cable & Housing:
Magura, hydraulic
Wheels
Front Wheel:
Tern Atlas H, cargo wheel
Rear Wheel:
Tern Atlas H, cargo wheel
Front Hub:
Novatec, Thru-axle, sealed bearings
Rear Hub:
Shimano Nexus 8
Spokes and Nipples:
Stainless steel
Rims:
Tern Atlas H, wide 35 mm
Tires:
Schwalbe Big Ben, 55-406, RaceGuard puncture protection, ECE-R75 ebike certification
Transmission
Shifter(s):
Shimano Nexus 8
Crankset:
Tern HSD custom, Gates CDX CNC machined beltring
Cassette/Freewheel:
Gates CDX, precision CNC machined cog
Bottom Bracket:
Motor integrated
Chain:
Gates Carbon Drive CDX belt
Pedals:
Urban with non-slip surface
Shifter Cable & Housing:
Shimano
E-System
Motor:
Bosch Active Line Plus (Gen 3), max speed 25 kph (EU); max speed 20 mph (US)
Battery:
Bosch PowerPack 400
Display:
Bosch Purion, 4 mode selectable, walk assist
Range:
42 -110 km (26-69 mi)
Charger:
Bosch Standard Charger
Bells & Whistles
Bell:
Aluminum
Chainguard:
Gates integrated
Kickstand:
Ursus, rear mount
Luggage Socket:
Combo Mount
Front Light:
Tern Valo Direct, 45 lux/190 lumens
Rear Light:
Herrmans H-Trace, for eBike
Fenders:
SKS, stainless hardware
Rack(s):
Atlas H Rack™, Atlas Rack Mount, 6 point mounting; Max load weight: 60 kg (132 lb)
Accessory:
ABUS 5650L, keyed-alike with Bosch battery

*Note: These are our standard model specifications. The bike's weight and folded dimension may not include racks and fenders. The specifications for your country may differ slightly. We do our best to ensure that the specifications listed here accurately reflect the exact parts found on our production bikes. However, component changes do occur for various reasons and there may be brief delays on site updates. We reserve the right to make component changes without prior notification, which may cause discrepancies with the information listed on the web.