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Emissions Compliance Declaration: QUALIFIED MANUFACTURER DECLARED "REPLACEMENT PART"
WARNING: Cancer and Reproductive harm - www.p65warnings.ca.gov
The Yamaha YZF-R3 and MT-03 are major players in the entry level sport bike class. Yoshimura in a never ending pursuit of performance has developed our Alpha T Works Finish slip-on for these sporty machines.
Our new Alpha T slip-on is ready to power up the 320cc parallel twin sport machine. Adding 4.3% more HP at max and 3.8% more torque at max to give a more linear fun-riding experience, all the while providing a tone that gives the 320cc an ear pleasing growl. All this with almost a 2 lbs. weight savings.
- Yoshimura Alpha T Slip-on: 4.6 Lbs. vs Stock muffler: 6.3 Lbs.
New for 2020, this slip-on comes with an exhaust gasket for a factory fit.
Proudly made in the U.S.A.
Instructions and Parts Diagram

This product was designed to fit on a standard equipped motorcycle, as delivered from the factory. OE and Aftermarket accessories not found on a bike as delivered from the factory, may not be compatible with this product.
Attention International Customers: This product was designed and tested to be compatible with vehicles in the U.S. marketplace only. Compatibility including fitment and performance may vary by marketplace.
STREET SERIES EXHAUST SYSTEM
Works Finish Explained
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