ARP M12 - 1.75 x 4.91 U/C Stud & 1.25

Both kits are manufactured from premium grade chrome moly steel with a Black Oxide
finish. For applications where clearance is not an issue, the kit features a chamfered ID,beveled edge and fully CNC machined surfaces. ARP rated thousands of psi tensile strength, and ensure molecular integrity, heat treated prior to thread rolling and machining and designed to exceed the OEM fasteners in strength and durability.