Superformance Factory crankshaft with 57mm stroke, C3 high speed bearings, machined, balanced and rebalanced in Italy, starting from an original YX shaft

The careful balancing, and the exclusive design guarantee levels of performance previously unthinkable on a Chinese engine, significantly increasing the torque and maximum power values.

Superformance handcrafted product in limited edition, the settings of each individual shaft are customized on the type of engine (2 or 4 valves), on the displacement and on the specific weight of the piston used.

"Made in Italy" production and design.