Tern BYB S11 - Bring Your Bike - Premium model with 11-speed Shimano Ultegra, Shadow RD derailleur
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.
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.
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.