Tern BYB S11 Price 2026: Specs, TriFold Review & Europe Edition
The Tern BYB S11 is a game-changing premium folding bicycle that redefines ultra-compact portability. Standing for "Bring Your Bike," it features a patented TriFold frame geometry that makes it 30% smaller than traditional 20-inch folding bikes, all while offering a high-performance Shimano Ultegra 11-speed road drivetrain.
Full Technical Specifications
| Folded Size | 33 x 81 x 51 cm (Takes up minimal floor space) |
| Crankset | FSA Gossamer Pro, 54T MegaExo |
| Shifters | Shimano Metrea Rapidfire, 11-Speed |
| Wheels | Kinetix Pro X, Paired-spoke technology, Sapim Aero spokes |
| Handlepost | Physis RF, 3D forged aluminum, Gen 2 |
| Cassette | Shimano 105, 11-32T, 11-Speed |
| Tires | Schwalbe Marathon Racer, 20x1.50" with RaceGuard protection |
| Fork | Tern Tarsus, 6061-Aluminium, Hydroformed rigid fork |
| Frame | Tern BYB, Aluminum, TriFold patented technology, TFL Joint |
| Drivetrain | 11-Speed Shimano Ultegra / 105 Mix Road Setup |
| Brakes | Shimano Deore T610 V-Brakes |
Size:
20-inch Wheels
Weight:
Approx. 12.7 kg
Brakes:
Premium Shimano Deore V-Brakes
Body Type:
Ultra-Compact Premium Commuter Folding Bike
Color:
Matte Silver, Midnight Blue
Manufacturing Years:
2024, 2025, 2026
About This Bike
Simply put, the Tern BYB S11 is not an ordinary or cheap folding bike; it is an extreme engineering miracle in the world of folding bikes. The full form of ‘BYB’ is ‘Bring Your Bike’. In the busy life of Europe, where there is no space to store your bike on trains, metros or office elevators, this bike is a magical solution. Its real magic is its patented ‘TriFold’ technology. Ordinary folding bikes fold only once in the middle, but this bike folds in two places on the frame. As a result, it becomes about 30% smaller than other 20-inch folding bikes. After folding, it looks like a small trolley bag on wheels, which can be easily pulled through any jam by pulling the handle. Being made of premium aluminum, the bike is not only incredibly strong, but also quite light in weight.
The best combination of safety and design
The locking and frame joints (TFL Joint) of this bicycle are made of very high-end safety mechanisms of international standards. Due to the double-lock feature, even when riding at high speeds, you will not feel that you are riding a folded bicycle; you cannot feel any shaking or wobbling. For safety, it uses world-famous ‘Schwalbe Marathon Racer’ tires, which have built-in puncture protection. As a result, there is no fear of air escaping quickly even if there are glass or sharp stones on the road. For braking, there is a premium ‘Shimano Deore’ V-brake, which stops the bicycle perfectly and safely on the spot even at any high speed. Its matte silver color finishing and minimalist design give the bicycle a very royal and noble look.
Compare with Competitors
Why This model is the best for you
If you live in a big city in Europe and commute by metro, bus or taxi every day, this bicycle will change your lifestyle. After folding, it takes up so little floor space that it can easily fit in the seat of a train, in a bus locker or under a restaurant table. There will be no extra tickets or parking tension. The biggest advantage is that its seat and handle point can be adjusted very easily through the ‘Andros Stem’ technology. As a result, anyone in the family with a height of 147 cm to 195 cm can ride upright without any back pain by adjusting the seat. And it has the ‘Shimano Ultegra’ 11-speed gear of a large racing bicycle, due to which it will easily leave any ordinary large bicycle behind in speed even though it is a folding bicycle. In a word – this is the best investment for extreme convenience, royal speed and lifestyle status.
Brakes and wheel control
The BYB S11's 20-inch wheels use premium 'Kinetix Pro X' rims and aero spokes, which greatly reduce the weight of the bicycle and help it cut through wind resistance and gain great speed. The 11-speed gear shifting is so smooth that there is no extra pressure or difficulty when climbing hills or flying over. Its handlebars have Rapidfire shifters, which can be used to change gears very precisely with one click. Its premium 'Ergon' grips do not allow extra pressure or fatigue on the palms of the hands during long riding.
Frequently Asked Questions
Answer: It can be fully folded in just 15 to 20 seconds due to its patented trifold mechanism.
Answer: No bro! Despite having so many high-end parts and double joints, it weighs only 12.7 kg, which is quite easy to carry.
Answer: Due to this technology, the bicycle becomes 30% smaller than a normal 20-inch folding bicycle and can be pulled like a trolley bag after folding.
Answer: Yes, it has the very premium 11-speed Shimano Ultegra gear of racing bicycles.
Answer: Absolutely not. It has Turn's patented TFL joint and a fantastic safety lock, which keeps the frame 100% solid while riding.
Answer: No bro, its main body or frame is made of premium high-grade aluminum, so there is no chance of rust.
Answer: Its rear luggage carrier has small wheels (Spinner Wheels) built-in. After folding, the bicycle can be pulled like a trolley by leaning on those wheels.
Answer: No, it has Squallbe Marathon Racer tires that have RaceGuard puncture protection, so the air does not leak easily.
Answer: According to Turn's official guidelines, it can easily carry a maximum weight of 105 kg.
Answer: This is a flagship ultra-compact bicycle from the Turn brand. Its unique trifold design, Shimano Ultegra 11-speed gear, and high-end parts make it a premium bike.
Answer: Yes, the Turn BYB S11 model comes with front and rear metal chain guards, mudguards, and a built-in trolley carrier.
Answer: Yes, its seatpost and handlebars are so well-adjustable that anyone from 147 cm to 195 cm tall can ride it comfortably.
Answer: It is mainly designed for city roads, commuting and high-speed riding. It can be ridden on lightly broken roads, but it is better not to ride it on muddy roads or mountains.
Answer: No. Like a normal premium bicycle, there is no extra hassle other than regular lubrication or oiling of the chain and keeping the folding joints clean.
Answer: Yes, brother, its matte silver finish, premium cable routing and unique design make the bicycle completely different and extremely elite than the other ten bicycles on the road!
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RShuvo is a passionate cycling content creator focused on sharing practical knowledge about bicycles, road safety, cycling adventures, and performance tips. With a deep love for two-wheel journeys and an interest in modern cycling culture, the goal is to help riders improve their skills, maintain their bikes properly, and enjoy every ride with confidence.
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