• 30% smaller than traditional 20” 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 Alivio, Shadow RD derailleur
BYB P8 - ultra compact folding bike
  • 20" wheels
Around-Town
Mid-Range

Product Reviews

[The BYB] has one of the most ingenious folding mechanisms on the market though. Once folded, the bike can be stored upright (there are thankfully no protruding bits to snag on other people’s clothing) and pushed along using the handlebars and a combination of its main wheels and two tiny swivelling castor wheels. For a 20-inch wheel folding bike, it’s certainly one of the smallest and neatest packages this rider’s ever encountered.

National World

Two joints make the Tern BYB unique and quite compact. Its full features also make it attractive for year-round commuters. Highly recommended.

Radfahren

In fact, when folded up, the BYB is actually one of the smallest 20″ bikes on the market, which means it’s much easier to manoeuvre on crowded trains and buses or when zigzagging through busy tube stations.

The Evening Standard

Specifications

General Info
Speeds:
1 x 8
Weight:
14.3 kg (31.5 lb)
Gear Inches:
31" - 91" (2.50 - 7.28 m)
Folding Size:
35 × 81 × 52 cm (13.8 × 31.9 × 20.5 in)
Folding Time:
30 seconds
Frame Sizes:
One size
Distance: Seatpost to Handlebar:
63 - 67.5 cm (24.8 - 26.6 in)
Suggested Rider Height:
147 - 195 cm (57.9 - 76.8 in)
Max Gross Vehicle Weight:
120 kg (264.6 lb)
Max Rider Weight:
105 kg (231.5 lb)
Frame
Frame:
Tern BYB, Aluminum, TriFold patented technology, EFBE tested: ISO 4210
Fork:
Tern Tarsus, 6061-AL, hydroformed
Cockpit
Handlepost:
Tern Physis RF, 3D forged, 5 patented technologies
Stem:
Tern Andros (G2), adjustable, forged construction, patented technology
Headset:
Flux, cartridge bearings, Physis integrated
Handlebar:
Flat bar, 6061-AL, Andros adapted
Grips/Bar Tape:
Velo ergonomic, lock-on
Saddle:
Tern Porter, patented GripPad design
Seatpost:
Tern Telescope, 34.9/30.9 mm, 2014-AL
Seatpost Clamp:
Oversize, 6061-AL, 2pc
Brakes
Front Brake:
Kinetix SpeedStop V-brakes, stainless hardware
Rear Brake:
Kinetix SpeedStop V-brakes, stainless hardware
Brake Levers:
Shimano
Brake Cable & Housing:
Jagwire, anti-compression housing, Slick Lube liner
Wheels
Front Hub:
Kinetix Neutron Mini 74, sealed cartridge bearing Opt: BioLogic Joule 3 dynamo
Rear Hub:
Novatec, sealed cartridge bearing
Spokes & Nipples:
Stainless steel
Rims:
Doublewall aluminum
Tires:
Schwalbe Citizen, 42-406, puncture protection, Reflex
Transmission
Shifter(s):
Shimano, 1 x 8 spd
Front Derailleur:
n/a
Rear Derailleur:
Shimano Alivio, Shadow RD
Crankset:
Forged 6061-AL, 52T
Cassette/Freewheel:
Shimano 11-32T, 8 spd
Bottom Bracket:
FSA, Cartridge, sealed bearings
Chain:
KMC, 8 spd
Pedals:
MKS EZY
Shifter Cable & Housing:
Jagwire LEX-SL, slick treatment, alloy ferrules
Bells & Whistles
Bell:
Pitch, brass
Chainguard:
Hebie
Kickstand:
Deluxe center mount
Clip System:
Anchor Bolt
Luggage Socket:
Combo Mount
Front Light:
Opt: Tern Valo 2, integrated, 41 lux/150 lumens
Rear Light:
Opt: Deluxe LED
Fenders:
SKS, stainless hardware
Rack(s):
Tern Metro Transit Rack; Max load weight: 20 kg (44 lb)
Accessory:
Pedal Holder

*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.