Features: Maintain maximum valve lift! Increased stiffness and column rigidity maximizing valve-train stability, increasing engine RPM horsepower and torque output. Tapered 7/16 4130 chrome moly adjustable pushrods, use a minimal adjustment parameter eliminating flex and loss of valve train-stability problems associated with most adjustable pushrods. Individual length intake & exhaust pushrods keep the adjustment extension to a minimum Designed to exceed the needs of performance engines using larger lift camshafts and high spring pressures, while maintaining proper and critical oil flow to top end valve gear. CNC machined with 32 thread per inch adjustment, Double jam nut lock system, RACE SERIES® wall thickness .120- recommended when extreme spring pressures are used Designed for use with hydraulic or solid lifters and street or race engines These pushrods require removal of rocker covers and rocker arm supports
