S&S Heavy Duty Spring Kit 0.605" Lift - M8Engineered for high performance Milwaukee Eight builds, this S&S Heavy Duty Valve Spring Kit is designed to handle aggressive cam profiles and sustained high RPM operation. High Performance Conical Single Wire Springs Built to support up to 0. 605" valve lift with exceptional stability and reduced valve float. Precision Rates 68 lb seat pressure at 1. 535" installed height, 364 lb at max lift for consistent valve control up to 6,500 RPM. Complete Kit
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