POLINI Evolution Gearbox Covers - Reinforced version with bearing guide and O-Ring seal.

The reinforced Gearbox Covers from the POLINI Evolution series feature several technical innovations. All three Gear Shafts are guided by Ball and Needle Bearings. This reduces friction losses, which can have a positive effect on power output. POLINI also solves the issue of oil-smeared and dirty gaskets with an O-Ring: It is inserted into a milled groove and makes it much easier to remove the Cap.

Available for MINARELLI horizontal and PIAGGIO Hyper2 Engines (externally mounted Primary Shaft). Depending on the gearbox installed, there are variants for 16 mm and 12 mm Countershaft for PIAGGIO Engines.