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Tern BYB S11


The frame size folding bicycles tend to be uniform (Uni) for the models. Bicycles have an adjustable seatpost and the tube of the handlebar on a large scale.

Recommendation the height of the slider according to the model range:


The recommended height of the rider

The size of the rims

Link142 - 190 cm (4'8" - 6'3")20"
GSD150 - 195 cm (4'11" - 6'5")20"
Vektron145 - 195 cm (4’10” – 6’5”)20"
Verge142 - 190 cm (4'8" - 6'3")20" (451)
Eclipse148 - 195 cm (4'10" - 6'5")26"
Node148 - 195 cm (4'10" - 6'5")24"
Joe142 - 190 cm (4'8" - 6'3")26 / 27,5"

JOE C21 and the JOE TOUR:

S: 157 - 167 cm (5'2" - 5'6"); M: 167 - 183 cm (5'6" - 6'); L: 183 - 190 cm (6' - 6'3")

  Season: 2020 Summer
Color  Delivery time
  • +Free delivery (DPD)
    By order under 800,- € we charge 20,- € shipping costs.
  • + Donate 1 EUR to handicaped skiers

    Our company has been supporting for many years those skiers who were not as lucky as the rest of us. Those who, despite their physical disabilities, are shreding slopes together with us  and win races all around the world. Because we believe that our esteemed customers will be pleased to participate in these activities, we offer you the opportunity to contribute 20,- CZK for the payment of a special ski equipment of our successful competitor Olda Jelinek. Olda will get 100% of this amount. Thank you for the cooperation!

  • + Ticket for chair lift for free x1
    • Chair lift Harrachov
  • + Other free gift x1
    • Discount for bicycle trips in Austria

Folding bike Tern BYB S11

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.

When folded, the BYB has one of the smallest footprints of any folding bike. That means a much easier time maneuvering it onto crowded trains and buses or when navigating through busy subway stations.

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.

Locking your bike outside gets you looking out the window every five minutes just to check if it's still there? The BYB folds so small that you can bring your bike indoors and stash it in the coat closet, behind the counter, or behind your desk.

The best things in life are shared, including your commuter bike. The BYB has a low-step frame design and resizes in seconds—no tools required—to fit riders between 147 and 195 cm (4’10” – 6’5”), so you can share the bike with anyone in your family.

  • 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
  • Kinetix Pro X wheels with paired spoke technology
  • 11-speed Shimano Ultegra, Shadow RD derailleur



Technical description

  • Frame
    Tern BYB, Aluminum, TriFold patented technology, EFBE tested: ISO 4210
  • Fork
    Tern Tarsus, 6061-AL, hydroformed
  • Front derailleur (front Shifter)
  • Rear derailleur (rear shifter)
    Shimano Ultegra, Shadow RD
  • Gear change
    Shimano Ultegra, 1 x 11 spd
  • front brake
    Tektro V, swivel link, race pad
  • Rear brake
    Tektro V, swivel link, race pad
  • Brake levers
  • Crank
    Crankset, FSA Gossamer Pro, 54T MegaEVO BB386
  • Bottom bracket
    FSA, BB-EVO8681
  • Headset
    Flux Pro, angular contact bearings, Physis integrated
  • Pedals
  • Cartridge
    Shimano 105, 11-32T
  • Chain
    Shimano, 11 spd
  • Number of speeds
    1 x 11
  • Handlebars
    Kinetix Pro X, double-butted 7050-AL, Andros adapted
  • Stem
    Tern Andros (G2), adjustable, forged construction, patented technology + Tern Physis RF, 3D forged, 5 patented technologies
  • Seatpost
    Tern Telescope, 34.9/30.9 mm, 2014-AL, socket, Oversize, 6061-AL, 2pc
  • Saddle
    Ergon SMC30 Pro, TiNox Rails
  • Grips
    Ergon GS1 Leichtbau
  • Rims
    Kinetix Pro X, Paired Spoke technology, straight-pull design, 16H
  • Tires
    Schwalbe Marathon Racer, 40-406, puncture protection, Reflex
  • Wheel size
  • Weight
    12.7 kg (27.9 lb) fully-equipped
  • Folded size
    33 x 81 x 51 cm (13.0" x 31.9" x 20.1")
  • The maximum load capacity
    105 kg (231 lb)
  • BELL
    Pitch, brass
  • Chain cover
  • Stand
    Premium center mount
  • Mudguards
    SKS, stainless hardware
  • carrier
    Tern Metro Transit Rack


  • Product code

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