K-Series K24 K20 FG Header V2 with Bolt-On Catalytic Converter

You have a K24 in your 8th Gen Civic SI?  This is the BEST HEADER you need!  Also fit K20! Now with bolt-on 200 cell high flow cat! PLM Private Label Mfg. K-Series 06 - 11 Civic Si K24 & K20 header features a true step-up exhaust header design.  This version 2 (V2) is an one-piece design for 100% leak free installation. These are usually in stock & made to order. With Bolt-On High Flow Metallic Catalytic Converter. Fitment: 2006 - 2011 Civic SI  FG FD FA Chassis Direct fit with K24 engines 8th Gen Eighth Generation Honda Civic with K24 engines Also fits K20 engines Key Features: Stainless steel construction Metallic core 200 cell high flow catalytic converter Direct bolt-on installation One year warranty Short tube Tri-Y header True 2.5" collector CNC machined manifold flange 3/8" thick flanges 18 gauge stainless steel One piece design Includes donut gasket & hardware