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Skunk2  Alpha Header 06-11 Civic Si The Skunk2 Alpha Header for the 06-11 Honda Civic Si w/ k20z3 motor w/ free shipping. This highly affordable and powerful header which takes from the design from the race proven megapower header from skunk2...

PLM Race Header 06-11 Honda Civic Si The PLM 06-11 Honda Civic Si 8th Gen Private Label Manufacturer 4-2-1 Race Header for the 2006-2011 Civic Si K-Series (k20z3) motor. This race header provides serious power, quality, fitment and comes with a great...

Full-Race 2012-2015 Honda Civic Si Downpipe V2.0 The Full-Race 2012-2015 Honda Civic Si & Acura ILX 3.0inch Downpipe V2.0 / Header for naturally aspirated and supercharged applications. This high flowing header provides maximum gains by reducing...

Skunk2 Downpipe for 12-15 Civic Si // 412-05-1950 Skunk2 Alpha Downpipe for the 2012-2015 9th Generation Honda Civic Si. This one piece design downpipe features a 4inch bellmouth inlet exiting at a 3inch outlet, enabling maximum airflow for the k24...

PLM Downpipe 2012-2015 Honda Civic Si The PLM Private Label Manufacturer 2012-2015 Honda Civic Si header / downpipe for the 9th Gen Civic. This header is made from high quality cast 304 stainless steel and features a large 4.25 inch bellmouth inlet with...

PLM Acura RSX / EP3 4-2-1 Race Header The PLM Acura RSX / Honda Civic EP3 & K-SWAP EM2 Header is a race header designed with great power and price. The stainless 4-2-1 design makes for good low mid and high end power. Offering gains in the range of...

K-Tuned 06-11 Honda Civic Si Header 409 Steel Series 4-2-1 8th Gen Civic Race Header The K-Tuned 4-2-1 Race Header for the 06-11 Honda Civic Si 8th Gen Civic. This 409 Steel series header provides good power, good pricing and also offers a high-flow...

PLM K24 RSX / EP3 Header Have a K24 in your RSX? This is the BEST HEADER to get on the market today! This also fits k20 motors. PLM Private Label Mfg K-Series RSX / EP3 Tri-Y ( K24 ) header features a true step-up exhaust header design. This...

Invidia Race Header 2006-2011 Honda Civic Si V2.0 The Invidia Race Header 06-11 Honda Civic Si, this header is a very high quality header made by the company Invidia. Invidia produces very high quality products at a very affordable price. This 4-2-1...

Vibrant Doughnut Header & Exhaust Gasket 2.5" - 10108G This is the vibrant 10108G 2.5" donut / doughnut exhaust gasket. This exhaust gasket is made out of graphite and is of higher quality material. This is perfect for those who purchase an...

PLM 06-11 Civic Si Race Header w/ High Flow Catalytic Converter 8th Gen Civic The first off the shelf header with a high-flow cat, from none other than plm. One of the most affordable, long standing header manufacturers for the past 15 years on the 8th...

PLM Downpipe 2012-2015 Honda Civic Si Catted | 9th Gen Civic The PLM Private Label Mfg. Power Driven K-Series Header Downpipe is designed for 9th Gen Civic FG 2012-2015 & Acura ILX 2013-2015. It features a 4.25 inch bell mouth design with a 3 inch...