If you plan on building big power, custom aged studs are the studs for you! We recommend custom aged studs to any customers looking to make more then 800HP! These stud kits are perfect for twin and triple turbo charger setups.
The ARP Custom Age 625 series head studs are the ultimate head stud for high horsepower and competition engines. Rolled threads after hardening, centerless ground, and clamping force rated at 260,000 PSI, the Custom Age 625 head studs are engineered to be the best option on the market to keep cylinder heads from lifting under the most demanding cylinder pressure. Proudly made in the USA at ARP's facility in Santa Paula, California
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