Akrapovic Yamaha YZ450F 2010-12 Full Titanium Race Exhaust
The Akrapovic Racing and Evolution complete exhaust systems are the championship winning flagships of our product lines. They are designed for competition-oriented MX riders who demand maximum performance from their exhaust systems, made of extremely durable high grade titanium. With their production quality, engine performance improvements, weight reduction and modern Hexagonal muffler design they satisfy even top pro racers. The systems are designed for two markets; in the USA they are available with an approved spark arrester, and for the EU and other non-US markets they come with a noise damper. Our patented additional chamber helps to reduce noise emission and provides better power and torque delivery. For the Racing system we use stainless steel tubes and composite end cap while we use titanium tubes and carbon-fiber end cap for the Evolution system.  Measurements of the Akrapovic EVOLUTION system on the YAMAHA YZ 450 F (with muffler insert):  Power & Torque: The Akrapovic Evolution and Racing systems deliver a performance increase throughout the bottom and top rpm range. The systems deliver increased torque through entire power curve, what will additionally help at reducing lap times on the track. Max. increased power of 2.5 HP  was measured at 10000 rpm, while max. power of 53.6 HP was measured at 9300 rpm.