About DC Sports Polished Stainless Steel Headers DC Sports headers are made of 100% T-304-stainless steel, including the flanges, eliminating any chance of rust. Our DC Sports polished stainless-steel headers feature hand TIG welds at the flanges, and our brushed stainless-steel headers feature machine MIG welds at the flanges that foster a tooled, custom-fabricated look.
* Every system is dyno-tested for maximum performance
* CAD-rendered, two-piece 4-2-1 design eases installation
* CNC-machined O-Rings eliminate leaks
* 100% 304 Stainless steel construction including the flanges.
* CNC mandrel bends with robotically-welded fittings deliver perfect fit
* CNC-machined and threaded flanges eliminate leaks
* Equal length primary piping ensures optimum tuning of systems for more power across rpm range
* C.A.R.B. exempt or pending C.A.R.B. exemption
* Includes comprehensive instructions and all necessary hardware
This Header pair fits the 2006-2011 Honda Civic Si and is part number: HHS5524