• High-Performance Series Main Bolts
• 2-Bolt Main, Large Journal with Hex Nut
• Forged from 8740 chrome moly
• Bolts feature generous under-head radius & rolled threads for the utmost reliability
• Threads are rolled after heat treating which makes them about 2000% longer fatigue life than most main bolts
• Nominal rating of 180,000 psi
• Parallel-ground, hardened washers are included with kit