Opti-Torque - Holden RB30 1/2" Torquemaster Head Stud Kit Category_Oil Sumps and Accessories Made with ultra-pure 4330v steel

Made with ultra-pure 4330v steel that receives multiple heat treatments through final nitride and polish

just switch back to OEM and it may last another 20 years like most of them do

*PLEASE NOTE: 1/2 inch ARP upgrade

Mil SPec Proprietary Diaphragm

8Ltr Kit is lifted to 11

Opti-Torque - Holden RB30 1/2" Torquemaster Head Stud Kit Category_Oil Sumps and Accessories Made with ultra-pure 4330v steelOpti Torque Nissan RB30 SOHC head stud kit Torque Master 1 2 OTT 10402 Opti Torque Technologies are a USA based fastener manufacturer. Our RB30 SOHC head studs are rated at an amazing 240,000 260,000psi ultimate tensile strength. Kits include 12 point nuts and washers for Nissan RB30 with single cam head. HIGH STRENGTH FASTENER SOLUTIONS To gain that extra edge, you need to be able to push components to their limits. With Opti Torque, youll gain the