IAG Stage 5 CNC Ported Heads w/ +1mm Ferrea Valves & GSC S3 Cams for 18-20 STI N25 Casting. 2005-subaru-impreza-wrx StopTech Power Slot 06-07 WRX

StopTech Power Slot 06-07 WRX / 05-08 LGT Rear Right Slotted Rotor

GTIN: 00887753777393

We recommend it for cars up to 20-25% more power(depending on part number) perfect for street cars with mild bolt-ons

To avoid the cracking failures seen in the OEM oil pickup tubes

IAG Stage 5 CNC Ported Heads w/ +1mm Ferrea Valves & GSC S3 Cams for 18-20 STI N25 Casting. 2005-subaru-impreza-wrx StopTech Power Slot 06-07 WRXIAG's Stage 5 Cylinder Head Package utilizes a CNC porting program for the N25 heads that was developed over the past five years and tested on the most successful high horsepower Subaru's. The ported head package starts with brand new N25 OEM WRX STI head castings directly from Subaru of America. The bare castings are visually inspected then fixtured into our in house Centroid 5 axis CNC Machine, one of the most advanced precision engine machining