Street Alpha SO SS-CF-CF

Part Number

ID/SKU: 11670BM220

Street Alpha SO SS-CF-CF


The new Kawasaki Z650/Ninja 650 is turning heads for those looking for a great middle weight bike. Yoshimura is now introducing our Alpha Race Series. Alpha’s styling, fit and finish result from investments made in technology, combining decades of hands on experience with the latest in digital design capabilities. Our new Race Series system not only drops over half the weight of the stock system, max horsepower is up 6.5% and max torque is up 3.1%. Plain and simple this system rocks, and the sound that is one of a kind Yoshimura!

One look at an Alpha system and you know it’s something special!

  • More aggressive sound profile
  • Beautiful shape resulting from our Tri-Oval design heritage
  • Unrivaled fit and finish due to improved production tolerances
  • Optimized for maximum flow and improved ground clearance
  • Designed for durability and ease of service
  • Made with our exclusive Works Finish
  • Alpha FS weight carbon fiber muffler: 8.0 Lbs vs Stock weight: 17.8 Lbs.
  • Configuration - Stainless Steel Header and Tail-pipe
  • Proudly made in the USA!

New Yoshimura Works Finish takes on a unique coloring after it goes through a heat cycle on the motorcycle that looks much like those titanium works components our factory racers use.

  • Contemporary Satin/matte finish
  • Uniform heat coloration
  • Increased fatigue strength
  • Increased scratch and stain resistance

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