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Ships within 48 hours · Estimated delivery Jul 26 - Jul 31
These are heat treated to a hardness of 26-32 HRC and then cyro treated for improved physical properties
The Best Option is new bolts
2016 Subaru WRX Premium 2
5L 5MT 4WD Outback Wagon 2005
Outfront Motorsports Custom ARP2000 ½” Headstud Kit for EG33 Flywheels These are heat treated toBenefits: 25% stronger than 625+ studs and 40% stronger than 11mm ARP 2000's reduced shank diameter (allows for no head gasket modifying) more thread engagement in block over 11mm studs uses stock alignment pins without modifying case or heads over 200ft lbs tested for stud "pull out" in block same kit price compared to 625+ kits (requires additional block and head machining to use) custom large diameter hardened washers to prevent embedding into head