Casa Performance Lambretta drive sleeve upgrade kit.

Completely new design to keep the front sprocket permanently in place. Further advantages are the significantly simplified installation and the integrated puller.

The loads - especially with very heavily tuned engines - on the front sprocket bolt are very high and can cause it to come loose during operation. This is no longer possible with the Casa Performance solution. The sleeve is bolted to the crankshaft with a significantly shorter, high-strength bolt (tightening torque of 45 Nm). The spring is held in place with a special nut via a solid 18 mm thread in the sleeve. There is no need to fiddle with the teeth of the original drive sleeve with the pressure spring cover.