Subaru WRX STI Cylinder Heads

Take your WRX STI to the next level with VividRacing's high performance engine components like pistons, rods & bearings, as well as Cold Air Intake, Suspension like Springs, Rods and Coilovers, to wheels, tires and anything else you could use to tune your WRX STI to the next level. For high performance upgrades for your WRX STI, VividRacing has you covered-- we're the #1 source on the web for WRX STI racing parts and upgrades, and our drive to be number one in customer service and delivery keeps our customers returning to us year after year. Even if you don't find what you're looking for, be sure to call us and speak with a WRX STI upgrade & racing specialist-- odds are we can help you locate the exact part you want.

View all WRX STI Cylinder Heads products

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	Cosworth Big Valve Cylinder Head Subaru WRX STI 2.5L EJ25 04-12 Model Number: KK3670 View Price Cosworth Big Valve Cylinder Head Subaru WRX STI 2.5L EJ25 04+Cosworth CNC ported cylinder heads feature dyno tested and flow bench proven ports, engineered for maximum usable power. Each new cylinder head is ported on a 5 axis machine to ensure consistency and perfect port shape every time. Additionally, larger intake (+1mm) and exhaust valves (+1mm) are utilized to help increase flow. Cosworth CNC ported Big Valve cylinder heads come complete with a performance valve job, hi rev (max 10,500rpm...
	Cosworth Big Valve Cylinder Head with Camshafts Subaru WRX STI EJ25 2.5L 04-06 Model Number: SB8010 View Price Cosworth Big Valve Cylinder Head with Camshafts Subaru WRX STI EJ25 2.5L 04-06Cosworth CNC ported cylinder heads feature dyno tested and flow bench proven ports, engineered for maximum usable power. Each new cylinder head is ported on a 5 axis machine to ensure consistency and perfect port shape every time. Additionally, larger intake (+1mm) and exhaust valves (+1mm) are utilized to help increase flow. Cosworth CNC ported Big Valve cylinder heads come complete with a performance valve job, hi re...
	Cosworth Big Valve Cylinder Head with Camshafts Subaru WRX STI EJ25 2.5L 2007 Model Number: 20002024 View Price Cosworth Big Valve Cylinder Head with Camshafts Subaru WRX STI EJ25 2.5L 2007Cosworth CNC ported cylinder heads feature dyno tested and flow bench proven ports, engineered for maximum usable power. Each new cylinder head is ported on a 5 axis machine to ensure consistency and perfect port shape every time. Additionally, larger intake (+1mm) and exhaust valves (+1mm) are utilized to help increase flow. Cosworth CNC ported Big Valve cylinder heads come complete with a performance valve job, hi rev...
	Cosworth Big Valve Cylinder Head Subaru WRX STI 2.5L EJ25 2007 Model Number: 20001699 View Price Cosworth Big Valve Cylinder Head Subaru WRX STI 2.5L EJ25 2007Cosworth CNC ported cylinder heads feature dyno tested and flow bench proven ports, engineered for maximum usable power. Each new cylinder head is ported on a 5 axis machine to ensure consistency and perfect port shape every time. Additionally, larger intake (+1mm) and exhaust valves (+1mm) are utilized to help increase flow. Cosworth CNC ported Big Valve cylinder heads come complete with a performance valve job, hi rev (max 10,500rp...
	Cosworth Big Valve Cylinder Head Subaru WRX STI EJ25 2.5L 08 Model Number: 20004544 View Price Cosworth CNC ported cylinder heads feature dyno tested and flow bench proven ports, engineered for maximum usable power. Each new cylinder head is ported on a 5 axis machine to ensure consistency and perfect port shape every time. Additionally, larger intake (+1mm) and exhaust valves (+1mm) are utilized to help increase flow. Cosworth CNC ported Big Valve cylinder heads come complete with a performance valve job, hi rev (max 10,500rpm) valve springs with titanium retainers and are ready to insta...
	Cosworth Big Valve Cylinder Head with Camshafts Subaru WRX STI EJ25 2.5L 07 Model Number: 20002026 View Price Cosworth Big Valve Cylinder Head with Camshafts Subaru WRX STI EJ25 2.5L 07Cosworth CNC ported cylinder heads feature dyno tested and flow bench proven ports, engineered for maximum usable power. Each new cylinder head is ported on a 5 axis machine to ensure consistency and perfect port shape every time. Additionally, larger intake (+1mm) and exhaust valves (+1mm) are utilized to help increase flow. Cosworth CNC ported Big Valve cylinder heads come complete with a performance valve job, hi rev (...
	Cosworth CNC Ported Big Valve Cylinder Head w/Cams Subaru WRX STI EJ25 08-12 Model Number: 20010140 View Price Cosworth Big Valve Cylinder heads for the Dual AVCS 2008 STI EJ257B engine. Machine Ported for maximum accuracy and performance, complete with larger (+1mm) valves and dual valve springs for maximum flow. Cosworth Big Valve Cylinder heads are the key to high power and unlocking the performance potential in your Subaru engine.These heads include Cosworth S2 version camshafts (20007935) with the correct cam followers included. This is the perfect head/camshaft combination for serious performance a...