CT-Engineering Stainless Steel Civic SI Headers   E-mail this product to a friend CT Engineering headers and exhaust systems are manufactured using CNC machined flanges and mandrel bent T-304 stainless steel tubing. All CT-Engineering headers have precision fit merge collectors and all joints are TIG welded for durability and appearance. Fits:  2006 - 2009 Honda Civic Si CT Engineering uses both its in house DTS engine dyno and Dyno Dynamics chassis dyno to develop all of the headers and exhaust systems they sell. All CT Engineering headers are 50 state emissions legal. The CT-Engineering Header for the Civic SI features: Full Stainless Steel, Mandrel bent 4-2 header TIG-Welded by hand in-house for only the finest quality welds We highly recommend pairing with a CT Engineering Cat-Back Exhaust System for maximum Hp gains Optimized for high horsepower N/A and Supercharged applications 50 State Street Legal, and CARB certified for street use in CA CT-Engineering Part # -- 210-035   Regular Price: $529.00  On Sale For: $495.00  Quantity: