Outfront Motorsports Custom ARP Head Stud Kit Subaru WRX 2002-2021 / STI 2004-2021/ BRZ / FR-S vendor_NGK Plugs & EJ257 Main Bolts are

& EJ257 Main Bolts are crafted from 8740 forged chrome moly and feature generous under-head radius and rolled threads for excellent reliability

and are all SFI approved

Duration @

Reduced Shifter Play

150 PSIg Stainless Steel Sensor

Outfront Motorsports Custom ARP Head Stud Kit Subaru WRX 2002-2021 / STI 2004-2021/ BRZ / FR-S vendor_NGK Plugs & EJ257 Main Bolts arePart #: OUT ENG HEADSTUDS In conjunction with ARP, Outfront Motorsports has an exclusive design with our specs and innovative design. Look for our markings, accept no imitations. Fitment: 2002 2018 WRX 2004 2021 STI 2005 2009 Legacy GT Outback XT 2010 2012 Legacy GT 2004 2013 Forester XT 2003 2006 Baja Turbo 2013 2017 BRZ 2013 2016 FR S Benefits: 25% stronger than 625+ studs and 40% stonger than 11mm ARP 2000's reduced shank diameter (allows for no