The IAG 950 CNC Ported Race Cylinder Heads are designed for racing and competition. These fully CNC ported heads provide a significant upgrade in flow over the IAG 750 heads. These heads work great for cars where getting more power might be the difference between winning or losing that big race. The IAG 950 heads work great for drag racing, as well as high horsepower time attack or hill climb, and are designed to support up to 950 BHP with supporting mods. These heads include upgraded GSC +1MM Superalloy Valves, GSC Viton Valve Stem Seals, Upgraded GSC Valve Guides, IAG-Spec Beehive Valve Springs with Titanium Retainers, and OEM Keepers. GSC S2 Camshafts are available with OEM valve lifter buckets. We also offer an optional chamber modification service (see below) for EJ20 heads to allow use on EJ25 short blocks. Each IAG 950 Cylinder Head Set starts with new OEM castings from Subaru of America. The first step is to select your Year and Model of vehicle so that we may provide you with the right castings to fit your project. Next, you'll select whether or not you want to include our optional GSC camshaft package. If selected, these heads will include new GSC S2 Camshafts and OEM Lifter Buckets for valve adjustment.
This Part Fits:
| Year |
Make |
Model |
Submodel |
Notes |
| 2002 |
Subaru |
Impreza |
WRX |
|
| 2003 |
Subaru |
Impreza |
WRX |
|
| 2004 |
Subaru |
Impreza |
WRX |
|
| 2005 |
Subaru |
Impreza |
WRX |
|
Specifications:
| Description_SHO |
950 Cylinder Head |
| Description_INV |
IAG 950 CNC Ported Race Cylinder Head |
| Description_ASC |
IAG 950 CNC Ported Race Cylinder Heads Package Includes: (x2) Brand New Subaru OEM Cylinder Head Castings, (x8) GSC 37mm (+1mm) Intake Valves, (x8) GSC 33mm (+1mm) SuperAlloy Exhaust Valves, (x16) IAG-Spec Beehive Springs & Retainers, (x16) GSC Manganese-Bronze Valve Guides, (x16) GSC Valve Stem Seals, IAG Performance CNC Porting, Multi-Angle Valve Job, Drilling for compatibility with ½" or 14mm Head Studs, Machined Cam Lobe Clearance, Resurface, Ultrasonic Cleaning. |
| Description_ASC |
For use with larger cams such as GSC S2. |
| Description_ASC |
Assembly and professional installation recommended. |
| Description_ASC |
Workmanship/parts warranty will only be available for professionally installed cylinder heads. |
| Description_KSW |
IAG Performance |
| Description_LAB |
950 CNC Ported Race S20 Cylinder Head Package (No Cams / Lifters) |
| Description_DES |
IAG 950 CNC Ported Race S20 Cylinder Head - No Cams / Lifters |
| Description_APS |
Subaru: Impreza 02 - 05 WRX |
| Description_EXT |
IAG 950 CNC Ported Race S20 Cylinder Heads Package (No Cams / Lifters) for 02-05 WRX |
| Description_MKT |
The IAG 950 CNC Ported Race Cylinder Heads are designed for racing and competition. These fully CNC ported heads provide a significant upgrade in flow over the IAG 750 heads. These heads work great for cars where getting more power might be the difference between winning or losing that big race. The IAG 950 heads work great for drag racing, as well as high horsepower time attack or hill climb, and are designed to support up to 950 BHP with supporting mods. These heads include upgraded GSC +1MM Superalloy Valves, GSC Viton Valve Stem Seals, Upgraded GSC Valve Guides, IAG-Spec Beehive Valve Springs with Titanium Retainers, and OEM Keepers. GSC S2 Camshafts are available with OEM valve lifter buckets. We also offer an optional chamber modification service (see below) for EJ20 heads to allow use on EJ25 short blocks. Each IAG 950 Cylinder Head Set starts with new OEM castings from Subaru of America. The first step is to select your Year and Model of vehicle so that we may provide you with the right castings to fit your project. Next, you'll select whether or not you want to include our optional GSC camshaft package. If selected, these heads will include new GSC S2 Camshafts and OEM Lifter Buckets for valve adjustment. |
| Description_FAB |
New Head Castings with Upgraded GSC +1MM Superalloy Valves, IAG Beehive Valve Springs |
| Description_FAB |
Power: The IAG 950 Cylinder Head Package has a power output rating of 950 BHP. |
| Description_TLE |
IAG Performance 950 CNC Ported Race S20 Cylinder Heads Package (No Cams / Lifters) for 02-05 WRX |
| Description_DEF |
Engine Cylinder Head Set |
