Tern

BYB S11 // Silver

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Product Description

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. Perfect for mixed-mode commuters, the folded BYB can fit practically anywhere so all your transport options are always open.

When folded, the BYB has one of the smallest footprints of any folding bike. That means you'll have a much easier time maneuvering it onto crowded trains and buses or navigating through busy subway stations. The BYB stands on its rack, and the built-in spinner wheels let you trolley the bike with one hand while the other holds your coffee. The compact size also makes it convenient to store away behind doors, under desks, or in your closet. In fact, the BYB is a perfect fit for standard cabinets so whether you've got one, or more, the BYB will occupy minimal space in your place.

Of course, 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. This commuting bike can even be upgraded to 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 (sold seperately) to customize your ride to fit your needs .

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 4’10” – 6’5”, so you can share the bike with anyone in your family.

Product Details

ColorsSilver
Materials
Aluminum
Measurements
13.8"L x 31.9"W x 20.5"H
OriginVietnam

— Manufacturer's 5 Years & Easily Upgraded to 10 Years w/ Tern Care
— 30% Smaller Than Traditional 20” Folding Bikes
— Fits Riders 4’10” – 6’5
— Fits Conveniently Into Lockers, Closets, Or Any Narrow Space
— Hardware Instructions Included
— No Assembly Required, Just Unfold & You're Ready To Ride
— Folded: 13.8" x 31.9" x 20.5"
— Unfolded: 62.5" x 42" x 24"
— Weight: 28 lb

Technical Details
— Speeds: 1 x 11
— Gear Inches: 32" - 94" (2.57 - 7.48 M)
— Folding Time: 30 Seconds
— Seatpost To Handlebar: 24.8 - 26.6"
— Suggested Rider Height: 57.9 - 76.8"
— 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 Pro, Angular Contact Bearings, Physis Integrated
— Handlebar: Kinetix Pro X, Double-butted 7050-al, Andros Adapted
— Grips/bar 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: Jagwire, 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: Crankset, FSA Gossamer Pro, 54t Megaevo Bb386
— Cassette/freewheel: Shimano 105, 11-32t
— Bottom Bracket: FSA, Bb-evo8681
— Chain: Shimano, 11 Spd
— Pedals: MKS Ub-lite Ezy
— Shifter Cable & Housing: Jagwire Lex-sl, Slick Treatment, Alloy Ferrules
— Bell: Pitch, Brass
— Chain Guard: Hebie
— Kickstand: Premium Center Mount
— Clip System: Anchorbolt
— Luggage Socket: Yes
— Fenders: SKS, Stainless Hardware
— Rack(s): Tern Metro Transit Rack
— Accessory: Pedal Holder

Shipping Information

Shipping Availability
United States
Shipping Policy
Standard Ground Shipping
Ship In
1-2 weeks ⓘ

If the estimated time seems a bit long, it's because many items are shipped in bulk at the end of the sale (on Mar. 17), which is what affords you the discount. Some items are also made-to-order and/or are shipping internationally. The best things are worth waiting for!
Return Policy

Final sale, not eligible for return or cancellation