7 - Tuning Parts for Subaru WRX STI 08-14

Manganese Bronze Stopper Style Valve Guide

Manganese Bronze Stopper Style Valve Guide

75 lbs @ Seat / 195 lbs @ 11mm lift

Forged Pistons From Wiseco Compatible With EJ257. Wiseco - high quality pistons for most applications.

STi Shift Lever kit includes replacement shift linkage bushings. Pre-assembled for easy plug and play.

Air filter kit from Injen. Requires no mapping and is easy to install.

Subaru WRX/STI Performance Cold-Air Intake, Polished, 2008-2014

Subaru Impreza WRX and STI Silicone Radiator Hose Kit, 2008+, Red

Subaru WRX STI Oil Cooler Kit, 2008+

Limited Edition Subaru Oil Filler Cap, Gold

Subaru Oil Filler Cap

Subaru WRX/STI Aluminum Radiator Stay Set, 2008+, Blue

Subaru WRX/STI Aluminum Coolant Overflow Tank, 2008+

A true weight savings that can be felt with every blip of the gas pedal. One of our best selling parts, many thousands installed on Subaru engines around the world. The PERRIN crank pulley is machined from 6061T6 billet aluminum, anodized black or red and laser etched for increased belt life and a precision fit.

CNC laser cut from 6061 plate aluminum and finished with a durable powder coating.

PERRIN Performance Air Oil Separator traps oil from the crank case vents before it enters the intake, thus increasing intercooler efficiency and reduces chances of performance-robbing detonation. The AOS increases intercooler efficiency by reducing the amount of oil deposited into your intercooler and intake system

PERRIN bushings eliminate the sloppy feeling during quick gear changes, giving the driver a more precise feel when shifting. Especially that crucial 2nd-3rd shift. PERRIN Shifter bushings are a hard polyurethane bushing which eliminates slop but allows natural drivetrain movement. Simply replaces the OEM rubber shifter bushings with an easy install using simple hand tools.

Don’t let a flimsy paper filter get between you and true performance.The PERRIN Performance™ dual stage, “Open Cell” foam, drop-in Panel Filter is the answer. A stealthy approach to higher air flow. Increases in horsepower are a simple easy install away! Quick cleans are simple with our aerosol cleaner and spray oil. After all, more air equals more power!

The PERRIN Performance Afta MAF Hose replaces the factory corrugated rubber hose between the inlet tube and air box. This is an awesome part for restoring a high mileage or older WRX, STI or Legacy GT that very likely has developed cracks or holes in the original part. Available in red or black.

The PERRIN Performance intercooler coupler kit replaces your factory coupler with our high-gloss, vibrant color hose that looks and works better. Our silicone couplers are made from fiber reinforced 3-ply silicone tube. Our high strength reinforced silicone''s multi-layer design is capable of withstanding extremely high pressures and temperatures.

The PERRIN Performance intercooler coupler kit replaces your factory coupler with our high-gloss, vibrant color hose that looks and works better. Our silicone couplers are made from fiber reinforced 3-ply silicone tube. Our high strength reinforced silicone''s multi-layer design is capable of withstanding extremely high pressures and temperatures.

Developed to perform under the most extreme conditions, Shock Factor Shifter Bushings bridge the gap between ordinary aluminum, brass, and cheap plastics used in current aftermarket shifter bushings by offering a unique Delrin specifically chosen by Torque Solution engineers to ensure product performance and reliability while drastically reducing shifter end play allowing for crisper, more precise shifts. All this makes it easy for us to stand behind our shifter bushings with a lifetime warranty.

K&N Typhoon® air intake systems are built for performance and show. This free-flowing mandrel-bent aluminum tube induction system was designed to fit many sport compact performance vehicles. Typhoon air intakes come with a high-flow conical air filter designed to provide increased surface area and dust capacity. Some Typhoon air intakes are not legal for use in California and other states adopting California emission standards while others are CARB exempt and 50 state legal. Check the K&N air intake product page for specific CARB status.

TITANIUM. Brian Crower - High quality engine parts for your build.

6.0mm Exhaust. Brian Crower - High quality engine parts for your build.

COBB Tuning, founded in Texas 1999, delivers high-quality performance upgrades and their famous Accessport ECU tuner for top driving experience.

Intake, 36mm head STD Head

Exhaust, 33mm head +1mm Head

Exhaust, 33mm head +1mm Head

Provides power gains while maintaining A/F ratios with no additional tuning