Rocker Shaft Kit High Performance With Floating Centre SpacerRocker Shaft Kit High Performance With Floating Centre Spacer Increase the RPM potential of your engine and get more power EMPI's rocker shaft kits help to eliminate rocker shaft side play that causes rocker arm galling, clip and washer failure Features a floating aluminium centre spacer which allows for fine tuning of rocker arm geometry and positioning All necessary hardware is included Best when used with EMPI's swivel foot adjusters