ARP Perma-Loc Rocker Arm Adjusters are manufactured from heat-treated, premium-grade 8740 chromoly steel, these adjusters provide 190,000 psi tensile strength for the utmost in reliability. The are available with exclusive heads with special shouldered stops to hold the adjusting wrench, precision CNC-machined threads to ensure optimum seat pressure, and flush-machined set screws for proper contact on the studs.
ARP 300-8241 - Adjustable 3/8 12pt rocker arm nut kit
ARP NASCAR Speed Studs are specially designed to accurately position the wheel and to more quickly release and tighten the lug nuts. They are made from heat-treated, 190,000 psi chromoly steel and feature J-form threads, an exclusive nut starter, and a bullet-shaped radius that all but eliminates cross threading. They use a special baked-on dry film lubricant to reduce the possibility of galling and ensure consistent clamp loads and double magnaflux inspection. These products are available in a variety of lengths and knurl diameters
ARP 300-8242 - Adjustable 7/16 12pt rocker arm nut kit
ARP NASCAR Speed Studs are specially designed to accurately position the wheel and to more quickly release and tighten the lug nuts. They are made from heat-treated, 190,000 psi chromoly steel and feature J-form threads, an exclusive nut starter, and a bullet-shaped radius that all but eliminates cross threading. They use a special baked-on dry film lubricant to reduce the possibility of galling and ensure consistent clamp loads and double magnaflux inspection. These products are available in a variety of lengths and knurl diameters
ARP 300-8243 - Adjustable 3/8 12pt rocker arm nut kit
ARP Perma-Loc Rocker Arm Adjusters are manufactured from heat-treated, premium-grade 8740 chromoly steel, these adjusters provide 190,000 psi tensile strength for the utmost in reliability. The are available with exclusive heads with special shouldered stops to hold the adjusting wrench, precision CNC-machined threads to ensure optimum seat pressure, and flush-machined set screws for proper contact on the studs.
ARP 300-8244 - Adjustable 3/8 12pt rocker arm nut kit
ARP Perma-Loc Rocker Arm Adjusters are manufactured from heat-treated, premium-grade 8740 chromoly steel, these adjusters provide 190,000 psi tensile strength for the utmost in reliability. The are available with exclusive heads with special shouldered stops to hold the adjusting wrench, precision CNC-machined threads to ensure optimum seat pressure, and flush-machined set screws for proper contact on the studs.
ARP 300-8245 - Adjustable 7/16 12pt rocker arm nut kit
ARP Perma-Loc Rocker Arm Adjusters are manufactured from heat-treated, premium-grade 8740 chromoly steel, these adjusters provide 190,000 psi tensile strength for the utmost in reliability. The are available with exclusive heads with special shouldered stops to hold the adjusting wrench, precision CNC-machined threads to ensure optimum seat pressure, and flush-machined set screws for proper contact on the studs.
ARP 300-8246 - Adjustable 7/16 12pt rocker arm nut kit
ARP Perma-Loc Rocker Arm Adjusters are manufactured from heat-treated, premium-grade 8740 chromoly steel, these adjusters provide 190,000 psi tensile strength for the utmost in reliability. The are available with exclusive heads with special shouldered stops to hold the adjusting wrench, precision CNC-machined threads to ensure optimum seat pressure, and flush-machined set screws for proper contact on the studs.