WRX STI

The Flex Fuel Package includes both the Ethanol Sensor Kit as well as the Fuel Pressure Sensor Kit. Utilizing COBB Custom Features along with this ...

This is a core-only option for those looking to increase the cooling capacity of their 2011-2014 WRX or STI in situations where piping already exis...

Remove the overworked factory intercooler from your 2004-2007 WRX or STI in favor of the Black COBB Front Mount Intercooler Kit. Featuring a massiv...

Remove the overworked factory intercooler from your 2004-2007 WRX or STI in favor of the Silver COBB Front Mount Intercooler Kit. Featuring a massi...

The COBB Tuning GESi Catted 3" Downpipe begins with a CAD designed cast bellmouth that smoothly blends air exiting the turbocharger's turbine housi...

The SF Air Box adds the benefits of a cold air intake to the outstanding performance of the SF Intake. The factory inlet directs cold air from the ...

The SF Air Box adds the benefits of a cold air intake to the outstanding performance of the SF Intake. The factory inlet directs cold air from th...

The Competition Clutch Stage 4 - Strip Series 1620 Clutch Kit, available with a double spring, six rivet carriage is good for ease of gear transiti...

The Competition Clutch Stage 4 - Strip Series 1620 Clutch Kit, available with a double spring, six rivet carriage is good for ease of gear transiti...

The Cusco Type RS LSD had proved to be capable of competition use in the All Japan Gymkhana Championship without overhauling a single time during t...

Using Cusco’s Brake Cylinder Stopper, the unwanted flex of the brake master cylinder is prevented when the brakes are applied. Painted Cusco blue, ...

Cusco Coilovers Street Zero A Front -Pillow / Rear -Rubber Upper 2015+ WRX STI ONLY

The CUSCO Comp-S Coilovers offer a reasonable price, satisfaction guaranteed, complete coilover kit. Upper pillow mounts come standard on the strut...

The Cusco Diffuser Bracket Kit must be used with the Cusco Rear Sub-Frame Brace in order to fit the '06 STI diffuser on the older Impreza models. D...

The cusco Rear Lateral Links control unwanted force under acceleration and braking. Cusco's pillow ball lateral links are designed to secure tracti...

The cusco Rear Lateral Links control unwanted force under acceleration and braking. Cusco's pillow ball lateral links are designed to secure tracti...

The cusco Rear Lateral Links control unwanted force under acceleration and braking. Cusco's pillow ball lateral links are designed to secure tracti...

The cusco Rear Lateral Links control unwanted force under acceleration and braking. Cusco's pillow ball lateral links are designed to secure tracti...

Type I Lower Arm Bar The Cusco Type I lower arm bar features a tubular high-tension lightweight aluminum design, coated in anti-corrosive paint for...

Type I Lower Arm Bar The Cusco Type I lower arm bar features a tubular high-tension lightweight aluminum design, coated in anti-corrosive paint for...

Type I Lower Arm Bar: The Cusco Type I lower arm bar features a tubular high-tension lightweight aluminum design, coated in anti-corrosive paint fo...

Type I Lower Arm Bar The Cusco Type I lower arm bar features a tubular high-tension lightweight aluminum design, coated in anti-corrosive paint for...

The Type MZ LSD had been greatly improved using most parts that comprise the Type RS. Its has evolved as well through countless R+D tires, tests an...

The Type MZ LSD had been greatly improved using most parts that comprise the Type RS. Its has evolved as well through countless R+D tires, tests an...

The Cusco Type RS LSD had proved to be capable of competition use in the All Japan Gymkhana Championship without overhauling a single time during t...

The Cusco Type RS LSD had proved to be capable of competition use in the All Japan Gymkhana Championship without overhauling a single time during t...

The Cusco Type RS LSD had proved to be capable of competition use in the All Japan Gymkhana Championship without overhauling a single time during t...

Cusco Pillowball Upper Mounts give you control over unwanted forces under acceleration and braking. Both center lock and camber adjustable upper pi...

Cusco Pillowball Upper Mounts give you control over unwanted forces under acceleration and braking. Both center lock and camber adjustable upper pi...