- 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 147 to 195 cm (4’10” – 6’5”)
- New TFL Joint with 3D interface, DeadBolt design and SpringLock technology
- New 3D-forged Physis RF Handlepost
- Tern Porter saddle with patented GripPad design
- 8-speed Shimano Acera, Shadow RD derailleur
- 20" wheels
[The BYB] has one of the most ingenious folding mechanisms on the market though. Once folded, the bike can be stored upright (there are thankfully no protruding bits to snag on other people’s clothing) and pushed along using the handlebars and a combination of its main wheels and two tiny swivelling castor wheels. For a 20-inch wheel folding bike, it’s certainly one of the smallest and neatest packages this rider’s ever encountered.
Tern has done a great job with this interpretation of the city folder, proving to have within its R&D not only a valid team of engineers, but also a group of enthusiasts who live and breathe the bike and understand the needs of those who ride the city streets every day.
Two joints make the Tern BYB unique and quite compact. Its full features also make it attractive for year-round commuters. Highly recommended.
But just because this folding bike is super compact doesn’t mean it’s only fit for people on the shorter side. In fact, anyone between 4’10” and 6’5″ can use this bike.
Bike Shop Girl
I flew last night (...) and I brought my bike. I'm gonna show you how I easily and quickly fly with my bike—and most importantly, how I just check this as luggage because I don't get charged a bike fee.
The Evening Standard
In fact, when folded up, the BYB is actually one of the smallest 20″ bikes on the market, which means it’s much easier to manoeuvre on crowded trains and buses or when zigzagging through busy tube stations.
The ingenious folding mechanism, in which the frame is bent in two places, ensures a good pack size. Also suitable for small day trips.
*Note: These are our standard model specifications. The bike's weight and folded dimension may not include racks and fenders. The specifications for your country may differ slightly. We do our best to ensure that the specifications listed here accurately reflect the exact parts found on our production bikes. However, component changes do occur for various reasons and there may be brief delays on site updates. We reserve the right to make component changes without prior notification, which may cause discrepancies with the information listed on the web.