IAG Performance and ARP 14mm Head Stud Set For Subaru WRX, STI, Legacy GT, Forester XT

This is the 14mm stud option for EJ builds that need even more clamp and are built around a more serious block and head strategy.

• Hardware: ARP 14mm stud setup
• Best fit: For EJ builds where the machine work and combination are already headed into higher-power territory
• Build style: A better fit for advanced race-minded builds than mild street engines

Fitment: WRX, STI, Legacy GT, Forester XT EJ applications

Why you'd choose it: Choose this when the block, heads, and gasket strategy are all aimed at a high-cylinder-pressure setup and you want the clamping hardware to match.