The new 2011 Sherco has a completely new engine which was redesigned from the engine cases out. The cooling system lines are integrated into the new cases, thereby eliminating the external lines, this leads to increased reliability and reduced maintenance. The new housings are aluminum pressure diecast and are machined in a single cycle. This insures maximum accuracy and perfect alignment for all of the attachment points. The new engine design incorporates a major change in the reed valve area, including a new orientation; the engine size has also been reduced. The clutch has a new master cylinder, a new hydraulic line and a new slave cylinder, which combined make the complete package smaller in size.