This optional header provides increasedtuning potentialwhen used with the Slip-On Line (Titanium) exhaust. It is constructed using high-grade stainless steel, has a thread for the lambda sensor for those planning to tune the engine electronics, and has no catalytic converter.Power is increasedby 1.5 hp at 7,650 rpm, when tested on the Akrapovi dyno against a Honda CRF300L with a standard stock exhaust. This adds a distinctive deep and sporty sound. It features easy plug-and-play installation, andno remappingis required.