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2018 Sherco 250 SE-R
2005-2008 Honda TRX500FGA FourTrax Foreman Rubicon GPScape
1990-1992 Polaris 650 RXL
2010-2013 Kawasaki KRF750 Teryx FI 4x4
Internal venting is also included in the design
Pro Design PD305 Cool Head Dome - Standard Bore (19cc) engine-pistons 2018 Sherco 250 SE-RBillet 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. Race Gas Only.
