Tern BYB S11 - Silver

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

Article number: 12-7-10
Quantity in stock: 1

Tern BYB S11

Bring Your Bike

  • 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 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

Free Shipping in Canada

Small Fold, Slim Fit

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.


Smaller Footprint

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.

Bring Your Stuff

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.

Theft Insurance

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.

Easy Storage

... and Ready to Roll ... 


General Info
Color: Matte Silver
Wheel Size: 20 inch wheels
Speeds: 1x11
Weight: 12.7 kg (27.9 lb) fully-equipped
Folding Time: 30 sec
Folding Size: 33 x 81 x 51 cm (13.0" x 31.9" x 20.1")
Frame Sizes: One size
Gear Inches: 32" - 94"
Distance: Seatpost to Handlebar: Min: 630 mm (24.8") Max: 676 mm (26.6")
Distance: Saddle to Pedal: Max: 1034 mm (40.7")
Suggested Rider Height: 147 - 196 cm (4'10" - 6'5")
Max Load Weight: 105 kg (231 lb)

Frame: Tern BYB, Aluminum, TriFold patented technology, EFBE tested: ISO 4210
Fork: Tarsus, 6061-AL, hydroformed

Handlepost: Tern Physis RF, 3D forged, 5 patented technologies
Stem: Tern Andros (G2), adjustable, forged construction, patented technology
Headset: Flux Pro, angular contact bearings, Physis integrated
Handlebar: Kinetix Pro X, double-butted 7050-AL, Andros adapted
Grip/Bars Tape: Ergon GS1 Leichtbau
Saddle: Ergon SMC30 Pro, TiNox Rails
Seatpost: Tern Telescope, 34.9/30.9 mm, 2014-AL
Seatpost Clamp: Oversize, 6061-AL, 2pc

Front Brake: Tektro V, swivel link, race pad
Rear Brake: Tektro V, swivel link, race pad
Brake Levers: Shimano
Brake Cable & Housing: JJagwire, anti-compression housing, slick cables, Slick Lube liner, alloy ferrules

Front Wheel: Kinetix Pro X, Paired Spoke technology, straight-pull design, 16H
Rear Wheel: Kinetix Pro X, Paired Spoke technology, straight-pull design, 16H
Tires: Schwalbe Marathon Racer, 40-406, puncture protection, Reflex


Shifter(s): Shimano Ultegra, 1 x 11 spd
Rear Derailleur: Shimano Ultegra, Shadow RD
Crankset: FSA Gossamer Pro, 54T MegaEVO BB386
Cassette/Freewheel: Shimano 105 11-32T, 11 spd
Bottom Bracket: FSA, BB-EVO8681
Chain: Shimano, 11 spd
Shifter Cable & Housing: Jagwire LEX-SL, slick treatment, alloy ferrules

bells & whistles

Bell: Pitch, brass
Chainguard: Hebie
Kickstand: Premium center mount
Clip System: AnchorBolt
Luggage Socket: Yes
Fenders: SKS, stainless hardware
Rack(s): Tern Metro Transit Rack
Accessory: Pedal Holder

We are doing our best to provide accurate and up to date descriptions, specifications and images of our products, but we cannot guarantee that they are absolutely correct. Please contact us if in doubt, or to confirm a particular feature or a spec which is important to you.
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