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Your cart is empty.Main Stud KitGM LS, LS1, LS2, LS6, LS7, LSX, GEN III4-Bolt Style190,000 psiIncludes 12-Point Nuts, Washers Speedmaster engine studs are premium-grade, race-quality studs that are created from aircraft quality 8740 high tensile strength chromoly steel, withstanding up to 190,000 PSI .They are ground and thread-rolled after heat treatment to ensure the exacting tolerances that Speedmaster requires for all of their fasteners. This ensures strength and consistent torque readings. All kits come complete with 4130 heat-treated, parallel-ground washers and high-strength 12-point nuts.
Carter Justice
September 1, 2025
Good people to deal with I haven't used the parts yet but they look quality happy to buy again package arrived in 3 days so sooner than expected thanks guys I will order again
PAUL TANNER
July 20, 2025
it is a nice setup and came quick but didnt come with any directions on torque. anyone have anything
Harmans Tinting
March 22, 2025
Speedmaster suggests 70 ft lb in 3 steps and 25 ft lb for the small bolts for those that can’t find it 😎
Occasional b. Shopper
February 12, 2025
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