Jesel Torx Head Bolt - 5/16-18 in Thread - 1-1/4 in Long - Black Oxide (Set of 32) SPBM2 1/2-28 ThreadHolley has been the

1/2-28 ThreadHolley has been the undisputed leader in fuel systems for over 100 years

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The Hyperco/ICP Hydraulic Load Centering Spring Perches substantially improve performance by allowing the spring forces to remain centered on the damper and eliminate lateral loads

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Jesel Torx Head Bolt - 5/16-18 in Thread - 1-1/4 in Long - Black Oxide (Set of 32) SPBM2 1/2-28 ThreadHolley has been theProduct Description: Bolt 5 16 18 in Thread 1. 25 in Long Torx Head Nuts Included Chromoly Black Oxide Set of 32 Dan Jesel realized early on that the success and demand for his high end valvetrain components was in part dependent on huge valve lifts, unheard of spring pressures and rpm that most thought was impossible. So he started on a 10 year quest to perfect the roller lifter. After nearly nine years of R&D and endless testing, Dan brought the