We reinvent the concept of "performance" to bring you the maximum performance for your bike.

Tested on a power bank, on a circuit and open roads to offer you a unique driving experience.

Machined using the most avant-garde techniques and high-precision technology, the new J.Costa Valhalla variator adapts to the belt to achieve a work of superior efficiency.

This translates into more performance and better driving experience.

Designed to provide maximum performance with the Valhalla variator, the new pulley provides better friction and belt performance; as well as extra durability and aerodynamic flow.