ARP Custom Age 625+ Head Stud Kit | Subaru WRX/STi EJ20 & EJ25 (260-4704)
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ARP Custom Age 625+ Head Stud Kit | Subaru WRX/STi EJ20 & EJ25 (260-4704)

$589.02
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Subaru WRX & STi (EJ20 and EJ25) Head Studs CUSTOM AGE 625 PLUS®: This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best of all it is less expensive and expected to soon replace MP-35 as the material of choice in the high strength, super-alloy field. Typical tensile strength is 260,000-280,000 psi. Features 625 Super-Alloy Tensile strength: 260,000+ PSI Recognizing Head Stud Failures Applications Subaru WRX & STi (EJ20 and EJ25) What's in the box? ARP head studs Parallel ground washers 8740 chromoly steel 12pt nuts (1) .5 oz. pack of ARP Ultra-Torque fastener assembly lubricant Warranty ARP Warranty

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