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Home > Exhaust > 2004-2006 Yamaha R1 Evo2 / Evo / Racing Full Exhaust by Akrapovic
Product Categories: Exhaust  Akrapovic  Yamaha 

2004-2006 Yamaha R1 Evo2 / Evo / Racing Full Exhaust by Akrapovic
 
 
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Code: AKRY2

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2004-2006 Yamaha R1 Evolution2 / Evolution / Racing Slash Cut Full Exhaust Systems by Akrapovic

Supersport motorcycles like the Yamaha R1 call for top-quality aftermarket components and the Akrapovic EVOLUTION2 / EVOLUTION / RACING systems definitely rank in that category. Installing one of these systems will make the engine come alive. Experienced riders and racers will be able to maximize the advantage offered by the Akrapovic EVOLUTION2 / EVOLUTION / RACING exhaust systems. In addition to the increased performance, the visual effect is also dramatic, as the systems fit right in to the sharp lines of the Yamaha.

 

The Akrapovic EVOLUTION2 / EVOLUTION / RACING systems for the Yamaha R1 has a specific configuration of 4-2-1-2, which means: 4x header tubes run into a double collector, which is attached to a single Y-connecting tube, from which the dual mufflers are led under the seat. For the RACING system the header tubes are conical and made of stainless steel, the collectors are cylindrical and made of stainless steel, the Y-connecting tube is conical stainless steel, both link pipes are cylindrical titanium welded to the mufflers. The rest of the connections are sleeve joints held together with

silicon-shielded tensioning springs. The mufflers are available with either titanium or carbon-fiber outer sleeves. Muffler outlet caps are made of carbon-fiber. The tubes for the EVOLUTION system are all made entirely of titanium. The mufflers for the EVOLUTION are available in the same options as the RACING. All metal elements on the interior of the mufflers are entirely of titanium. The EVOLUTION2 mufflers are about 1" shorter tucking them nicely in the undertail while giving them a little louder and deeper rumble. The systems have a fitting on the Y-connecting tube for installing a lambda sensor. With Akrapovic EVOLUTION2 / EVOLUTION / RACING exhaust systems installed, the motorcycle’s exhaust system will no longer contain a catalytic converter or EXUP valve.

04-06 Yamaha R1 Evo2 /  Evolution / Racing Exhaust System Dyno Chart

     

Power & Torque: Akrapovic EVOLUTION2 / EVOLUTION / RACING systems allow the Yamaha engine to breathe to its fullest, as can be seen in both the power and torque curves. In addition to increased power, the system levels the power curve into a linear contour. The power increase begins at the low end at 3400 rpm and lasts up to 4600 rpm. From there to 6200 rpm the Akrapovic curve follows the stock curve. From 6200 rpm on the curve shows the qualities characteristic of the top Akrapovic systems. The increase runs all the way to the top of the rpm range, where it reaches max. power of 160.7 HP at 12730 rpm. The max. increased power is a massive 7.9 HP at 7200 rpm. The torque curve is even more eye-opening, as the system exerts an even greater influence on the stock curve. The

drop-outs in the stock curve at around 3600 rpm and 7200 rpm are filled. The engine will be

responsive at every point, allowing both racing intensity and smooth shifting at low revs.



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