These ARP High Performance series head bolt kits are tough! They are rated at 170,000 psi--15 percent stronger than Grade 8 fasteners. They come available with hex heads or reduced wrenching 12-point heads that eliminate the need for valvetrain removal when re-torquing cylinder heads.
Sophia Hall - 2024-03-03
From ordering to delivery, the process was quick and easy. The product exceeded my expectations in every way. Highly recommend!