Valve Spring Kit 7mm .650" lift

Fits 2004 to present Evolution Sportster and 2005-2017 Twin Cam Also fits 1984-1999 Evolution Big Twin, 1986-2003 Evolution Sportster and 1999-2004 Twin Cam that have been equipped with late style valves with 7mm stem. Beehive Spring Kit for use with up to .650" valve lift. Seat pressure 178 lbs. Comes with CNC machined Extreme Duty 9 degree locks. These Beehive springs will coil bind as late as at 1.150" lift, which is much later as with regular valve spring kits. This kit must be used with AV&V valve seals ZPN749017, Beehive kit with chromo 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.