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

Fietsmarkt

This e-bike falls into the category of 'small powerhouse'.

Read more about Tern HSD S8i

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.

Read more about Kleine Räder kommen groß raus

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.

Read more about E-Faltrad

ElektroRad

We recommend the Tern HSD S8i to families looking for a bike for shopping, going to school and excursions. A compact bike as a joy dispenser.

Read more about Vieleskönner aus Taiwan

Aktiv Radfahren

I don't want to switch to the car anymore. With a bike I am more mobile, faster and more flexible.

Read more about Stadt-Radeln und seine Regeln

Fully Charged Show

These electro assist bikes might be small and nimble, but can also hold a fair amount of delivery stock and could be part of the answer to making high street shops more accessible.

Read more about Can Cargo Bikes Electrify Last Mile Deliveries?

Süddeutsche Zeitung

And the HSD is amazingly comfortable: the upright seating position ensures a good overview in traffic

Read more about Rückenwind im Unterrohr

Cycling Electric

A cleverly specced folding electric bike that can be used for commuting, school runs or load carrying.

Read more about Review Tern HSD S8i Fold

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.