Pro Design PD305 Cool Head Dome - Standard Bore (19cc) engine-pistons 2012-2014 Polaris 600 SwitchBack PRO-R

2012-2014 Polaris 600 SwitchBack PRO-R

2005-2008 Honda TRX500FGA FourTrax Foreman Rubicon GPScape

NOTE: Not for use with S&S 79cc heads

1988-1993 Suzuki LT230E QuadRunner

Pro Design PD305 Cool Head Dome - Standard Bore (19cc) engine-pistons 2012-2014 Polaris 600 SwitchBack PRO-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.