Fumpa TPU Road Tube GSULT Big on space

Big on space

At 1450g a pair the G-SL 25 is light without compromising strength

the 1x Sport Shift kits make it easy

as long as the bike does not hinder anyone else when left there

HG-X11 specific tooth profile

Fumpa TPU Road Tube GSULT Big on spaceTPU tubes offer many of the benefits of going tubeless: lighter faster wheel weight, puncture and pinch flat resistance, superior road feel through the tyres, streamlined roadside repair kits and they retain the convenience of using tubes. But electric bike pumps generate heat which can damage plastic valve stems. Smooth plastic valve stems can also make it difficult to attach your pump. Fumpa TPU tubes are optimised for use with electric bike pumps