Cylinder Stud & Head Bolt Kit - '17-'23 M8 Models

Studs. 8 studs with rounded thread roots, rather than flat, improving fatigue strength. 4140 Chrome Moly studs, oil quenched and tempered to 39-44 HRC. Positive stop shoulder allows for consistent installed height. 180,000 psi tensile strength. Head Bolts. Reusable. 14% increase in strength over stock. Heat treated 8640 steel. 200,000 psi ultimate tensile strength. 8 - head bolts with integral washer. Formed threads. Cold formed head. Compatible with both MLS & graphite head gaskets.