See more: Valve Springs & Parts
Fits 1984-1999 Evolution Big Twin, 1986-2003 Evolution Sportster and 1999-2004 Twin Cam Kits for use with up to .600" valve lift. 1.375" top retainers for better clearance inside rocker covers. Seat pressure 155 lbs. Come complete with 1.375" retainers for better clearance inside the rocker covers, as well as valve locks and lower collars., Kit with chromoly retainers
AV&V's extreme duty valve spring kits contain valve springs manufactured from ultra clean high silicon Kobe alloy wire then micro shot peened and nitrided. Kits come with retainers and keepers as specified below.