The highly anticipated Yamaha R9 is finally here and Yoshimura has developed an AT2 Race Series system with profound results.

Utilizing our AT2 muffler we've been able give the Yamaha R9 the legs it needs to perform. Removing 5.3 lbs pounds of weight is huge advantage with our AT2 Speed Series.

Performance on with AT2 Race Series system provide more horsepower and torque throughout the entire power spectrum. In fact you can expect up to 4.68% HP gain @10,000 RPM and a 3.14% torque increase @7,100 RPM. Now the R9 has longer legs!

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.

Weights:
Stock system: 16.0 lbs.
Yoshimura AT2 Race Series Full system: 10.7 lbs.

Sound levels: (Using J2825 standards-Open-no sound insert)

2000 rpm
Stock: 82.7 dB
AT2: 93.8 dB

5000 rpm
Stock: 94.1 dB
AT2: 101.7 dB

Sound Insert/Spark Arrestor Options

Sound Level	Volume Insert	Spark Arrestor	Included
	INS-27-K		No
	INS-20-K		No
	INS-35-K		No

R9 Race Kit Parts

Price

Collections

YZF-R9 2025 Aluminum Muffler Bracket Kit

R9 2025 Race AT2 Stainless Full Exhaust, w/ Stainless Muffler