Chain and sprockets have to work in perfect harmony: this is the reason why we have optimised the profile of the sprocket teeth. The result is perfect synchronisation in traction and rapid shifting thanks to the Ultra-Drive? design._x000D__x000D_
* Steel_x000D_
* Galvanized_x000D_
* Ultra-Drive_x000D_
* Single sprockets_x000D_
* Supplied with lockring _x000D_
* Optimized sprocket timing _x000D_
* Ultra-Drive system surface galvanization._x000D_
* Weight 250g_x000D_
_x000D_
The nominal weight refers to the lighter specification among the available options.
