Yoshimura AT2 Slip-On Exhaust - Stainless Steel - 14720BP520

The new Kawasaki ZX-4RR sport bike is one special machine. Engineers at Kawasaki set out to develop a 400cc inline four cylinder engine built for high performance, and they delivered.

For this special machine Yoshimura used the AT2 muffler to develop a Street Series Works Finish slip-on giving power to the 16,000 + RPM's of the new Kawasaki powerplant. The AT2 came through in performance, sound, and weight savings. HP was bumped up by an increase of 3% and torque was bumped up as well, adding 4.3%. The mission of adding power and torque throughout the entire spectrum was accomplished. The AT2 Slip-on removed 4.5 pounds from the stock formation.

The sound of this inline four at 16,000 rpms with the AT2 is simply something that must be experienced in real life. True music! Finally, the styling of the AT2 can't be beat. It's now iconic matte carbon fiber end cap and heat shield compliment the lines of the ZX-4RR to perfection.

Installation Instructions (1.88 MB)