The Akrapovic Evolution II full-titanium exhaust system for the 2009-2010 Yamaha YZF-R1 is a work of art. This exhaust, is significantly lighter than stock and – on Akrapovic’s in-house dyno, also shows marked improvements in power output when compared to the OEM dyno graph without any tuning modifications. In fact, Akrapovic claims their full systems add 7.8hp over stock, add to that a custom fuel map or a map built by a Dynojet Autotune (http://www.r1messagenet.com/forums/showthread.php?t=4105) or Bazzaz Z-AFM (http://www.r1messagenet.com/forums/showthread.php?t=4102) self-tuning kit, and you can expect to see even bigger power gains along with improved throttle response. Of course, the exhaust produces a pleasing tone and after a few miles, will exhibit a nice blue color along the headers.

The Evolution II exhausts differs slightly from the Evolution and Racing Line full systems with the addition of balancer pipes that are welded between cylinders 1-2 and 3-4 which are designed improve exhaust scavenging and, as a result, mid-range power output when compared to the older design. We’ve also noticed the mufflers are slightly shorter on the Akrapovic Evo 2 exhaust that on the Racing and Evo versions, boosting top-end performance.

Call TJ at 866.931.6644 ext 817 to order. We also have slip-on, Racing Line and Evolution Line exhausts available for older Yamaha YZF-R1 models. If you have any questions regarding availability, shipping or technical questions, you can also email us – send those to FORUM at RIDERSDISCOUNT dot COM and be sure to include the year of your R1 for an accurate response.

Everything required for installation is included with the Akrapovic Evolution 2 exhaust.
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Dual titanium sleeve mufflers are capped with prepreg carbon fiber that is manufactured in-house at Akrapovic. Mufflers for the Evo II are also available with a carbon fiber sleeve.
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There is no provision for sound baffles in the Akrapovic Evolution 2 exhaust.
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4 into 2 into 1 into 2 exhaust pipe constructions.
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All crossover pipes, muffler spring tabs and even the Lambda sensor bung are all fabricated wholly from titanium. As usual, Akrapovic welders are experts in working with the exotic metal.
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Show here is the Lambda sensor bung which is lockwired in-house at Akrapovic.
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Frame-mounting tab is fabricated from titanium.
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All slip-fit joints are CNC-machined for a perfect pipe-to-pipe fit inside …
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… and out.
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Akrapovic employs six different types of titanium in the product of their exhausts matching the material with the specific need of the design. Where suppliers cannot produce what they need, Akrapovic now has their own foundry for producing just the right kind of part.
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Visible on both side of the exhaust just in front of the mufflers, are there carbon fiber leg guards which are also included with the kit.
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