My Cart: 0 item(s)
Yoshimura's 13900SP520 AT2 Speed Series Full Exhaust with Stainless Muffler is made specifically for Yamaha YZF-R9 (2025-current).
The highly anticipated Yamaha R9 is finally here and Yoshimura has developed an AT2 Speed Series system with profound results.
Utilizing our AT2 muffler and our ISC technology we've been able give the Yamaha R9 the legs it needs to perform. Removing 4.5lbs pounds of weight is nice advantage that comes with our AT2 Speed Series.
Performance on with AT2 Speed Series system provide more horsepower and torque throughout the entire power spectrum. In fact you can expect up to 3.37% HP gain @10,000 RPM and a 4.1% torque increase @8,300 RPM. Now the R9 has longer legs!
Our Integrated Sonic Chamber allows us to boost power over the stock unit and gives the R9 extra bark all while keeping the new Speed Series full system 49 state friendly.
Aesthetics and sound are second to none when it comes to Yoshimura. A brilliant Works Finish from the headers to the tail pipe provides a look that is beautiful, yet durable. A custom carbon fiber heel guard finishes the look. If your familiar with the sound of the AT2 and the CP3 engine platform, you know the one of a kind exhaust note that emits from the faceted end cap is insane!
We also offer an AB Bracket kit option if you elect to remove the passenger pegs.
Yoshimura's Speed Series AT2 is proudly designed, developed and manufactured in Chino, California.
Speed Series: All Speed Series systems are exhaust system applications that do not decrease your street bike’s emissions system performance Plus is 49-state street legal, yet still deliver extra power and that special spirit the world has come to expect from the legendary company known as Yoshimura.
Features:
- Engineered for the demands of the off-road world.
- Aggressive, intelligently designed, asymmetrical shaped RS-12 profile allows maximized muffler volume to help manage sound, add performance, weight reduction and provides more clearance for tire and brake caliper.
- Works-look matte carbon fiber end cap and stainless laser etched custom heal guard with industry leading design, innovation and detailing as expected from Yoshimura.
- New RS-12 end cap design improves durability, and eases servicing as compared to other sandwich mounting designs most commonly found in the industry.
- New patent pending Precision Taper Fit (PTF) insert ring makes it easy to install and remove sound inserts and spark arresters.
- Proudly designed, developed and made in the USA!
Works Finish:
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
Downloads
Installation InstructionsBest Sellers
Connect with our Team
Questions?
Call or WhatsApp: 786-242-5400 📞
