DC Sports 4-2-1 two-piece header systems delivers the same performace as our one-piece systems in a two piece design that eases installation. Our 4-2-1 two-piece header was rated “Best of the Test” in peak power, peak torque and average power gain by Sport Compact Car magazine. KEY FEATURES Dyno tuned and tested against the competition for maximum performance CAD-rendered, design with threaded flanges for easy installation 4-2-1 design emphasizes low and mid-range power for street/strip applications CNC mandrel bends with welded fittings deliver perfect fit CNC-machined flanges and O-ring seals eliminate leaks 100% T409 stainless steel with ceramic coating Equal length primary piping ensures optimum tuning for more power across the rpm range Comprehensive installation instructions, all necessary hardware and decals included 50-state legal or pending legality
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