Billet-machined design offers noticable bolt-on performance gains. Increased torque and power as a result of increasing compression. Larger water jacket area supplies more water; you get the ultimate in cooling efficiency by eliminating overheating. Cool Head shells and Cool Domes sold separately to give you a choice of compression ratios. Features include O-ring seal (no gaskets required) and adjustable and removable compression domes. Gas Only.

1987-2006 fits YAM YFZ350 Banshee