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The early gasket features more textured surfaces while the later gasket has highly polished surfaces
the optimal 2618 piston to provide both incredible power capability and high wear resistance
22641AA191 (MY03-07)
A divorced cast bellmouth enhances the flow out of the wastegate to prevent boost creep before providing a smooth transition into the 3 inch tubing for minimal restriction
COBB Titanium Cat-back Exhaust WRX BRZ A/F Sensor The early gasket features moreEXHAUSTING WORK OF ART COBB exhaust systems are the standard by which all other systems should be judged. This cat back system is fabricated from grade 1 titanium for the tubing flanges and grade 2 titanium for the hangers. The entire system is only 20lbs making it substantially lighter than stock. Every precision TIG weld is back purged to eliminate weld contamination. Slip fit tubing connections provide maximum adjustability during install. The
