Developed on a dyno and tested on track, this 4-Stroke Header for the LAEGERS dual exhaust system (Yamaha) YZF450 engine (2023–2025) and for the stock YFZ450R chassis equipped with the LAEGERS kit (YZF450 engine 2023–2025) offers improved performance compared to the original. With its enhanced bending and optimized pipe diameter, it expels exhaust gases much more efficiently than the stock header. This header is made entirely of high-grade stainless steel and is compatible only with the matching Doma silencer designed for your quad.

Globally recognized for their performance and power gains, Doma exhaust systems have won over many top ATV riders, including Romain Couprie, Matthieu Ternynck, Randy Naveaux, Alexandre Giroud, Jeremie Warnia, Davino Bruneel, Kevin Saar, and Marc de Vries.

Doma exhausts are manufactured in France, in the workshops located in Calais (62100). They are strictly intended for competition use and are not street legal.