Beehive Spring Kit, High Perf., Steel, 0.610″ Lift, Various HD® Applications

DescriptionHarley-Davidson® Sportster 883cc / 1200cc 2004-2021 Harley-Davidson® Twin Cam 88″ – 103″ 2005-2017 Harley-Davidson® Buell XB9-XB12 2003-2010 By taking advantage of the latest development in valve spring wire chemistry and manufacturing techniques, KPMI® has developed ovate wire Beehive style springs that will live and perform at a high level in Harley Davidson® applications. By coupling these developments with strict KPMI® design protocols and employing multiple design, simulation, and FEA analysis software, we were we able to overcome the torsional stresses unique to ovate wire springs that previously severely limited their operating parameters. This was critical, as there are nearly 100 camshaft part numbers available for these applications. KPMI® Beehive Springs are progressively wound using Kobe Super-Clean chrome silicon based wire that is heat treated and shot peened. KPMI® uses its tightly toleranced, FEA designed hardened steel retainers in these applications to insure correct assembly height and resist keeper pull through. The hardened steel basewashers included in these kits are designed to locate the spring and control lateral movement.Installation InstructionsClick HereTypeIntake / ExhaustRetainer MaterialH.T. SteelValve Lift0.610″Installed Height1.860″Seat Pressure175#Open Pressure400#@ Lift0.610″