Tern BYB S11 folding bike side view
Tern BYB S11 folding bike side view
Tern BYB S11 folding bike shown folded
Compact Bikes | Tern BYB S11i

Tern BYB S11i


for only $24.97 per week
Why rent if you can own it for less
Learn more

The Tern 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.

Why do we love this bike?

  • Small & compact
  • Fast & stable riding
  • Fits conveniently into lockers, closets or any narrow space
  • Uni-size – adjusts to fit riders from 147 to 195 cm (4’10” – 6’5”)
  • Easy-to-use trolley system & built-in spinner wheels for transport

Temporary promotion: Buy two and get 5% off your bike order. 

In stock

The Tern BYB S11i model features:

  • 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

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 office buildings. 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.

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.

The Tern BYB S11i comes with TriFold technology - a patented new way to fold a bike smaller while delivering a quality ride.

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Tern Bicycles

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