Pro Design PD307 Cool Head Dome - Standard Bore (21cc) tires-wheels-tire-wheel-kits 2007-2009 Arctic Cat F1000 EFI

2007-2009 Arctic Cat F1000 EFI Sno Pro

-20 threaded stud with a length of 1

2005 Ski-Doo GTX 600 Sport

2024 Yamaha YFM450 Kodiak 450 EPS

Pro Design PD307 Cool Head Dome - Standard Bore (21cc) tires-wheels-tire-wheel-kits 2007-2009 Arctic Cat F1000 EFIBillet 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.