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.
Ready to Roll
Ever tried to ride on public transport with a folding bike and felt like you needed an extra pair of hands? The BYB stands on its rack, and its built-in spinner wheels let you trolley the bike with one hand while the other holds your coffee.
A Bigger Ride
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.
Pop, Cover, Roll
Most folding bike covers are either too complicated or too time-consuming to use several times a day. The BYB isn’t just easy to fold and trolley, it’s also extremely easy to cover—simply grab the PopCover and you’re ready to go.
Mix It Up
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.
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.
Easy Storage
Small apartments and commuter bikes don’t usually match. Great news! The slim, small BYB fits just about anywhere—behind doors, under desks, 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.
Share Your Ride
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.
Features:
| speeds | 1 x 11 |
| weight | 12.7 kg |
| gear inches | 2.57 - 7.48 m |
| folding size | 33 × 81 × 51 cm |
| folding time | 30 seconds |
| frame sizes | One size |
| distance (seatpost to handlebar) | 63 - 67.5 cm |
| suggested rider height | 147 - 195 cm |
| max gross vehicle weight | 120 kg |
| max rider weight | 105 kg |
| 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 |
| bottom bracket | FSA, BB-EVO8681 |
| tires | Schwalbe Marathon Racer, 40-406, puncture protection, Reflex |
| pedals | MKS UB-LITE EZY |
| front derailleur | N/A |
| rear derailleur | Shimano Ultegra, Shadow RD |
| crankset | Crankset, FSA Gossamer Pro, 54T MegaEVO BB386 |
| cassette/freewheel | Shimano 105, 11-32T |
| chain | Shimano, 11 spd |
| shifter cable & housing | Jagwire LEX-SL, slick treatment, alloy ferrules |
| 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; Max load weight 20 kg |
| accessory | Pedal Holder |
| Frame Material | Alloy |
| Fork Material | Alloy |
| Pedals Included | Yes |
| Ride Style | Urban |
| Speeds | 1 x 11 |
| Weight | 12.7 kg |
| Gear Inches | 2.57 - 7.48 m |
| Folding Size | 33 × 81 × 51 cm |
| Folding Time | 30 seconds |
| Frame Sizes | One size |
| DISTANCE (SEATPOST TO HANDLEBAR) | 63 - 67.5 cm |
| Suggested Rider Height | 147 - 195 cm |
| MAX GROSS VEHICLE WEIGHT | 120 kg |
| Max Rider Weight | 105 kg |
| 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 |
| Bottom Bracket | FSA, BB-EVO8681 |
| Tires | Schwalbe Marathon Racer, 40-406, puncture protection, Reflex |
| PEDALS | MKS UB-LITE EZY |
| Front Derailleur | N/A |
| Rear Derailleur | Shimano Ultegra, Shadow RD |
| Crankset | Crankset, FSA Gossamer Pro, 54T MegaEVO BB386 |
| Cassette/Freewheel | Shimano 105, 11-32T |
| Chain | Shimano, 11 spd |
| Shifter Cable & Housing | Jagwire LEX-SL, slick treatment, alloy ferrules |
| 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; Max load weight 20 kg |
| ACCESSORY | Pedal Holder |
* All specifications listed are subject to change without notice. Please note that our specifications may be impacted by manufacturer component substitution changes caused by high global demand for bikes and resulting supply chain issues in the bike industry. We recommend confirming the specifications with your local Evo Cycles showroom if you have any questions.
Bike Weight: Many brands strive to list the lowest possible weight, but in reality weight can vary based on frame size, finish, hardware and accessories. The most accurate way to determine any bike's weight is to have your local showroom weigh it for you.
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