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The billet material that reinforces the combustion area has been further optimized with our V4 closed deck making it a far superior product to any sleeved block
the ID1300x will provide this
Tough AMPCO 45 pin bushings intended for heavy load applications
Short as possible primaries with a single secondary significantly decrease header volume
Outfront Motorsports 575 Complete Cylinder Head Package W25 Heads Oiling The billet material that reinforcesThe Outfront Motorsports 575 Cylinder Heads are the perfect entry level replacement heads if you had a failure requiring you to completely replace heads or if you just want brand new heads outright. These heads are a great option for you basic bolt on engines up to 575 BHP. The Outfront 575 Heads start with new OEM Genuine Subaru head castings. A multi angle valve job is performed as well as a fresh resurface. The heads go through multiple cleaning
