The BYB isn't just a folding bike—it's a whole new way to fold a bike.  It's 30% smaller than traditional 20" folding bikes, and folds small and slim enough to fit conveniently into lockers, closets, or any narrow space. Ever tried to ride on public transport with a folding bike and felt like you needed an extra pair of hands? The BYB stands on its rack, and its built-in spinner wheels let you trolley the bike with one hand while the other holds your coffee.  No matter how small or fast a bike folds, it needs to be a bike you want to ride. The BYB delivers with a frame engineered for stiffness, larger 20" wheels, and performance components.  The BYB is designed for mixed-mode commuters who do a stretch of their daily journey on a train or bus, or might grab a taxi home on a rainy day. Folded, the BYB fits anywhere so all your transport options are always open.   

A bike designed for commuting should let you bring your stuff, whether that's a change of clothes, workout gear, or your laptop bag. Add panniers, bags, racks, and baskets from Ortlieb and KlickFix to customize your ride.

• 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 Acera, Shadow RD derailleur

Colour: Graphite
Wheel Size:    20 inch wheels 
Speeds:    8 
Weight:    14.3 Kg (31.4 lb) 
Folding Time:    30 sec 
Folding Size:    35 x 81 x 52 cm (13.8" x 31.9" x 20.5")
Frame Sizes:    One size 
Gear Inches:    31" - 91" (2.50 - 7.28 m)
Distance: Seatpost to Handlebar:   Min: 630 mm (24.8"); Max: 675 mm (26.6")
Distance: Saddle to Pedal:    Max: 1045 mm (41.1") 
Suggested Rider Height:    147 - 195 cm (4'10" - 6'5") 
Max Rider Weight:    105 kg (231 lb)
Frame: Tern BYB, Aluminum, TriFold patented technology, EFBE tested: ISO 4210
Fork:    Tern Tarsus, 6061-AL, hydroformed 
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
Grip/Bars  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
Front Brake: Kinetix SpeedStop V-brakes, stainless hardware
Rear Brake:    Kinetix SpeedStop V-brakes, stainless hardware
Brake Levers:  Shimano
Cable & Housing:    Jagwire, anti-compression housing, Slick Lube liner
Front Hub:    Kinetix Neutron Mini 74, sealed cartridge bearing 
Rear Hub:    Novatec, sealed cartridge bearing
Spokes and Nipples:    Stainless steel
Rims:    Doublewall aluminum
Tyres:    Schwalbe Citizen, 42-406, puncture protection, Reflex
Shifter(s):    Shimano, 1 x 8 spd
Front Derailleur:    N/A
Rear Derailleur:    Shimano Acera, 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
Shifter Cable & Housing:   Jagwire LEX-SL, slick treatment, alloy ferrules