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ARP Pro Series Head Stud Kit 11mm - 02-14 WRX / 04-19 STI

ARP Head Studs are a complete part of your engine rebuilding breakfast. These are the 11mm head studs, and these are a great idea if you are rebuilding your engine back to stock specs, or if you are building your car to climb Mount Everest. And here’s why:

These studs are constructed out of grade ARP2000 alloy that is rated far superior to “aircraft” quality. Then each stud is placed vertically In special racks and precisely heat-treated to 220,000 PSI. These studs are then rolle. . . Show More >




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