Tune up and dress up your Honda Civic Si Sedan with L4-1.5L (t) engine with the Takeda 3" to 2-1/2" 304 cat-back exhaust with dual carbon fiber tips. This system utilizes 3" to 2-1/2" mandrel bent, 304 stainless steel tubing to improve exhaust flow and delivers up to +10 HP and +11 lbs. x ft. torque. 100% hand TIG-welded by certified craftsmen for race proven strength and durability, the Takeda system incorporates dual, free-flowing 304 stainless steel mufflers to improve performance across the power band while maintaining an aggressive tone and long lasting, good looks. Dual, double-wall carbon fiber tips finish off the system for a track-style, custom appearance.