• Strongest design available
• For the ultimate race engine build
• Suits 3.4, 3.8 and 4.2 XK engines
• Made from 4340 Chromoly steel
• Shot peened with a uniformed appearance
• Balanced to the highest tolerances
• Supplied with ARP’s highest specification bolt available: ARP 625+ and assembly lubricant
• Lightweight at 680grams including bolts