Description: For Honda / Acura Engine Swap 2.5" Adjustable Stainless Steel High-Flow Cat Exhaust Pipe This Is Best Used When Doing a B/D/H/K/F-Series Engine Swap in EG/EK/DC Chassis CNC-Machined T-304 Stainless Steel Exhaust Piping & TIG Welded Machined Flanges Improves Engine Performance And Increase Horsepower By Significantly Reducing Exhaust Flow Restriction Increases High Flow Air, Instantly Gains 10 -15 HP. / TQ Features Rotatable Flange with 3-Piece Adjustable Length to Fit Multiple Header Outlet Designs Specification: Fitment: For Honda / Acura B/D/H/K/F-Series Engine Swap (NOT A DIRECT BOLT-ON) For 2-Bolt Flange & 3-Bolt Flange Fits 2.5" Piping Connections Piping Only Size Chart: Inlet Size: 2.5" Outlet Size: 2.5" Adjustable Length: 16" ~ 19" O2 Simulators May Be Required If CEL Is Triggered Not Intended For Street Applications, This Item Is Intended For & Competition Purposes Only It Is Recommended To Weld The Pipes Together Once Installed For Secured Fitment Package Includes: 1 set Cat Exhaust Pipe Converter