Cars, buses, trains. Shops, escalators, elevators. Lockers, cabinets, checked-in luggage.

The BYB lets you bring your bike just about everywhere.

The facts:

  • 35% smaller than traditional 20" Tern folding bikes
  • Fits conveniently into lockers, closets, or any narrow space
  • Metro Transit Rack with built-in spinner wheels for easier trolleying
  • Fits riders from 147 to 195 cm (4'10" - 6'5")
  • New TFL Joint with 3D interface, DeadBolt design and SpringLock technology
  • New 3D-forged Physis RF Handlepost
  • Tern Porter saddle with patented GripPad design
  • 8-speed Shimano Acera, Shadow RD derailleur


Gear Inches / Metres of Development: 31" - 91" (2.50 - 7.28 m)

Folded Dimensions: 35 x 81 x 52 cm (13.8" x 31.9" x 20.1")


Max Load Weight (Rider & Cargo): 105 kg (231 lb)

Tern BYB P8 2020 - Folding Bike

Frame: Tern BYB, Aluminium, TriFold Patented Technology, EFBE Tested: ISO 4210
Fork: Tarsus, 6061-AL, Hydroformed
Stem: Tern Andros (G2), Adjustable, Forged Construction, Patented Technology
Bars: Tern Physis RF, 3D Forged, 5 Patented Technologies
Front Brake: V, Aluminium, Linear Spring
Rear Brake: V, Aluminium, Linear Spring
Rear Mech: Shimano Acera, Shadow RD
Shifters: Shimano, 1 x 8 spd
Speed: 8
Front Tyre: Schwalbe Citizen, 42-406, Puncture Protection, Reflex
Rear Tyre: Schwalbe Citizen, 42-406, Puncture Protection, Reflex
Seat Post: Tern Telescope, 34.9/30.9 mm, 2014-AL
Saddle: Tern Porter, Patented GripPad Design
Chainset: Forged 6061-AL, 52T
Bottom Bracket: FSA, Cartridge, Sealed Bearings
Chain: KMC 8 speed
Cassette: Shimano 11-32T
Pedals: MKS EZY

Cyclister Group


Due to COVID-19, Orders placed outside of working hours will be processed the following day

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Customer Service




Cyclister Limited is a company registered in England and Wales with Company Number 11527831.

The Colour Shed Darley Abbey Mills, Darley Abbey, Derby, England, DE22 1DZ

Tel: +44 117 318 0511