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Turning Subarus from meh to MEOW since 2005 - Import Image Racing
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Outfront Motorsports Custom ARP Head Stud Kit Subaru WRX 2002-2021 / STI 2004-2021/ BRZ / FR-S

Availability: Out Of Stock
Type: Bolts/Studs
Regular price
Regular price
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IIR Pay Customers get $24.50 in points

Subtotal: $490.00

Delivery Options:

  • Economy $4.97
Fastrak Delivery: , Order within hours minutes

In conjunction with ARP, Outfront Motorsports has an exclusive design with our specs and innovative design. Look for our markings, accept no imitations.


  • 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


  • 25% stronger than 625+ studs and 40% stonger 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 under heavy torque values and HP levels
  • Note, block machining must be performed as bare cases (can not be performed after shortblock is assembled)

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