Flywheel Bolt Kit fits GM LS Series, M11 x 1.25 Thread x .880" UHL

Arp Replacement Bolts Are Forged From Aerospace Alloy And Heat Treated Prior To Thread Rolling And Machining. With An Exclusive, Flat, 12-point Head Design And Larger Than Stock Shank Diameter These Bolts Deliver Increased Strength And Improved Flywheel And Flexplate Retention. Rated 170,000psi (high-perf.) And 190,000psi (pro-series) Tensile Strength.