These spring kits will fit all 99-UP PI heads and offer increased pressure and will allow up to .550" lift. Perfect for boosted engines, upgraded camshafts and increased RPM. The valve springs are a beehive design, and the complete kits include all springs, retainers, and new valve keepers. Parts included are:
16 Beehive Springs to fit in stock heads 85 lbs seat pressure 250 lbs open pressure Up to .550" Lift 16 Chrome Moly Retainers 16 Multi groove valve keepers
