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Yoshimura is a Japanese brand that has a US-based production facility. Here, in the U.S. we proudly manufacture the new Alpha T Street Series Exhaust systems by Yoshimura. The Street Series Alpha T slip-on exhaust saves over half of the original part weight and unlocks 3.3% more horsepower. The Race Series Alpha T full system gives the 300cc engine of the Ninja 300 17% more peak horsepower while cutting over 6 Lbs. off the stock system weight. The products mentioned in this post feature a New Yoshimura Works Finish that looks like titanium. This coloring effect becomes visible after the motorcycle goes through a heat cycle.

You don’t need to modify anything or tamper with the bike’s emission control system if you choose to go with a street-legal A Street Series Slip-on. It has a simple bolt-on structure, but it still offers that special high-performance spirit of the Yoshimura product. And if you like to take your Ninja up for a spin on the race track, you can opt for a Race Series full exhaust system. Note that it is designed for track use only.

Yoshimura® 14701BP520 - Street Series Alpha T 4-1 Tri-oval Slip-On Exhaust System

Yoshimura® 14701AP520 - Race Series Alpha T 4-1 Tri-oval Exhaust System

2013-2017 Kawasaki Ninja 300

Tubing Material: Stainless Steel
Sleeve Material: Stainless Steel
Type: 4 into 1
Style: Tri-oval
Style: Works Finish Edition
End Cap Material: Carbon Fiber
Muffler Finish: Brushed
End Cap Finish: Carbon Fiber

Stock muffler weight: 9.5 lb vs Alpha T Slip-on weight: 4.7 lb
Stock full system weight: 14.0 lb vs Alpha T stainless full system weight: 8.2 lb
Uniform heat coloration
Increased fatigue strength
Increased scratch and stain resistance
Contemporary Satin/matte finish

Go to the product page for more information.
If you want to browse the full catalog of Yoshimura exhaust products and other components at, click the button below:

If you have any questions, feel free to ask them here or call our tech experts at 888.903.4344​
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