These are a full set of our cylinder head fasteners, rated at an outstanding 190,000psi made from High Tensile Strength Chrome Moly Steel and cold forged to ensure molecular probity. The strength and reliability of these are due to the intensive Heat-Treatment undertaken prior to thread rolling and machining.

In reference our Empire Elite head stud kit has been mechanically proven for years and used on all of our Empire Mechanical & Racing's 700kw+ built motors in which we are now confident to sell to the public..

***This Kit Includes, 14 main studs that replace the original OEM bolts, 14 parallel hardened ground washers, 14 high tensile strength chrome moly and 12 point nuts***