The 625+ Head Stud Kit will secure the heads to a built engine in the Subaru WRX/STI.

ARP Custom Age 625+ Head Stud Kit

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Head Stud Specs:

• Made using newly formulated super-alloy demonstrates superior fatigue cycle life
• High tensile strength and toughness of 260,000-280,000 psi
• Resistance to atmospheric corrosion and oxidation
• Includes (12) head studs
• Includes (12) nuts
• Includes (12) washers
• Ideal for those with fresh, or high-horsepower rebuilds

ARP 625+ Head Stud Kit

ARP hands down engineers and manufactures the best hardware in the automotive industry. From world-class race cars to the world's fastest street cars, more than likely they will have some form of ARP hardware.

The 625+ Head Stud Kit has been designed to sustain the pressure of a high-horsepower build while securing the heads to the block without skipping a beat. If you are building your motor to handle more boost and more power, ARP Head Studs are almost mandatory in terms of being one of the vital ingredients to a proper engine build.