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Green Tern off-road cargo bike with a large front wheel on a white background
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Tern Orox S12 (27.5")

Tern Orox S12 (27.5")
£5,900.00 £5,428.00

Main specification

  • Derailleur Shimano Deore XT Shadow+
  • Gears 12
  • Drivetrain type Chain
  • Brakes Magura MT5, 4-piston hydraulic disc, 203 mm rotor, Hydraulic disc brake
  • Fork/Shock model Atlas X, butted chromoly steel, EFBE tested and approved
  • Wheel size 27.5"
  • Weight (kg) 37.1

Drive system

  • Drive unit Bosch Performance Line CX (BDU384Y)
  • Battery Bosch PowerPack 800
  • Battery capacity (Wh) 800
  • Display Kiox 300
Frame Size

Experience ultimate freedom with the Tern Orox S12 Adventure Cargo bike. Designed to tackle extreme conditions and conquer any terrain, this rugged trooper boasts unparalleled durability and versatility. With the capacity to accommodate up to two XL batteries, each delivering immense power, the Orox redefines off-grid exploration. With a massive Max Gross Vehicle Weight of up to 210 kg (462 lb), the Orox sets a new standard in cargo capacity, making it the perfect companion for your wildest adventures.

Pre-Order with 4% Discount

Available to Purchase via PayPal Credit
Three people on fat wheel bikes in a forest setting

Explore New Ground


The Tern Orox Adventure Cargo bike defies extreme conditions, keeping you going on roads where needed. This tenacious trooper packs up to two XL batteries to power you through extended off-grid exploration, redefining what's possible by bike with a massive Max Gross Vehicle Weight.
Person riding a fat bike through a forest

Go anywhere

Travel back in time as you trace railroad remnants hidden in the woods to mining ghost towns, or journey through diverse landscapes that span from lush green valleys to the rugged pinnacles of desert badlands. With incredible range and power, Orox lets you freely go on adventures unlike any other.
Person riding fat wheel bike through mud.

Tame Tough Terrain

Orox turns No-Man’s Land into your very own playground. Massive, bespoke Schwalbe all- terrain tires or stud-compatible Vee Snowball tires with extra-wide footprint are capable of handling challenging surfaces with superb traction and cushy comfort, making loose gravel, ice, snow, sand, and mud no match for the bike.

Detailed information

Category General Info
Speeds 1 x 12
Weight M: 37.1 kg (81.8 lb)
Gear Inches 18" - 95" (1.48 - 7.54 m)
Frame Sizes M, L
Bike Size M: 214 × 82 × 107.5 cm (84.3 × 32.3 × 42.3 in); L: 218 × 82 × 109.5 cm (85.8 × 32.3 × 43.1 in)
Wheelbase M: 134 cm (52.8 in); L: 137 cm (53.9 in)
Seat Tube Length M: 46 cm (18.1 in); L: 50.5 cm (19.9 in)
Top Tube Length M: 61 cm (24 in); L: 64.5 cm (25.4 in)
Stack Height M: 62.5 cm (24.6 in); L: 65 cm (25.6 in)
Standover Height 70 cm (27.6 in)
Distance: Seatpost To Handlebar M: 61 - 66 cm (24 - 26 in); L: 67 - 73 cm (26.4 - 28.7 in)
Distance: Saddle To Pedal M: 71 - 99 cm (28 - 39 in); L: 76.5 - 104.5 cm (30.1 - 41.1 in)
Suggested Rider Height M: 155 - 185 cm (61 - 72.8 in); L: 165 - 195 cm (65 - 76.8 in)
Max Gross Vehicle Weight On-road: 210 kg (463 lb); Off-road: 180 kg (396.8 lb)
Max Rider Weight 130 kg (286.6 lb)
Category Frame
Frame Tern Orox, 6061-AL, patented design, EFBE tested and approved
Fork Atlas X, butted chromoly steel, EFBE tested and approved
Category Cockpit
Stem Level Nine, 45 mm (M), 65 mm (L), Syntace VR-3 certified
Headset FSA, 1.5", angular contact bearings
Handlebar Level Nine, AL-7050, 800 mm, riser, eMTB approved
Grips/Bar Tape Ergon
Saddle Ergon SM, E-Mountain Sport, CrMo Rail
Seatpost Syntace P6 AL7050, 34.9 mm, Syntace VR-3 SP-approved
Seatpost Clamp Tern Collar
Category Brakes
Front Brake Magura MT5, 4-piston hydraulic disc, 203 mm rotor
Rear Brake Magura MT5, 4-piston hydraulic disc, 203 mm rotor
Brake Levers Magura MT5, hydraulic
Brake Cable & Housing Magura, hydraulic
Category Wheels
Front Wheel Tern Atlas X, ultra-heavy duty cargo construction, 27.5"
Rear Wheel Tern Atlas X, ultra-heavy duty cargo construction, 27.5"
Front Hub Tern Atlas X, CNC body, disc cooling fins, Boost Thru-Axle, integrated Tern Tool with 5 mm hex/T20 Torx
Rear Hub Tern Atlas X, CNC body, disc cooling fins, Boost Thru-Axle, Syntace X-12 standard
Spokes & Nipples Stainless steel
Rims Tern Atlas X, custom doublewall construction
Tires Vee Snow Ball 27.5 x 4 or Schwalbe Johnny Watts 27.5 x 4
Category Transmission
Shifter(S) Shimano Deore, 1 x 12 spd
Rear Derailleur Shimano Deore XT Shadow+
Crankset Tern Orox custom
Cassette/Freewheel Shimano 10-51T, 12 spd
Bottom Bracket Motor integrated
Chain KMC 12 spd, for eBike, EPT corrosion resistant coating
Pedals MTB, non-slip
Shifter Cable & Housing Jagwire LEX-SL, slick treatment, alloy ferrules
Category E-System
Motor Bosch Performance CX, max speed 25 kph (EU); max speed 20 mph (US)
Battery 725 Wh or 800 Wh, Bosch Dual Battery pack ready
Display Bosch Kiox 300 w/ LED remote, electronic bike lock
Range 725 Wh: 84 - 146 km (52 - 91 mi); 800 Wh: 93 - 161 km (58 - 100 mi); 1450 Wh: 168 - 292 km (104 - 181 mi); 1600 Wh: 185 - 322 km (115 - 200 mi)
Charger 220V, 4A (EU); 100-240V, 4A (US)
Connect Module Bosch Connect Module with GPS/GSM connectivity & anti-theft alarm when subscribed to Flow+; free 12-month trial upon activation
Category Bells & Whistles
Bell Pitch Plus, brass
Tool Thru-axle lever, 4/5 mm, Torx 2.5 mm
Chainguard Custom Bash Guard
Paint Protection ToughShield film on top and downtube, self-healing
Kickstand Atlas Kickstand XL, cargo ready
Front Light Ignis Headlight, ultra wide 700 lumens, Hi/Lo beam
Rear Light LED with G-Sensed brake light
Fenders Aluminum, heavy duty construction, oversize stays, 27.5"
Rack(S) Atlas X, 100 kg (220 lb) capacity