Not only does this new spark arrester decrease the dB level of your Monkey with our full system by 4 decibels, it arrests the spark and enables you to travel off-road with your little primate USFS...

Low decibel Sound Insert for R-34 Mufflers This insert is designed to take the dB level down and fit perfectly with R-34 applications

Use to make your Yoshimura exhaust system or slip-on muffler meet AMA Pro sound requirements Non-Spark Arrested Kit Includes: Low-volume insert tube, end-cap collar, and set screw Sold each NOTE:...

This sticker is for RS-9 left hand end cap decal only. 2.75 x 2 inches

Kawasaki's ZX-4RR is here and Yoshimura is excited to introduce our popular Fender Eliminator kit for this new entry level performance sport bike New improved D.O.T. compliant L.E.D. light and...

The popular R-77 offers outstanding performance, thanks to being developed in the heat of competition. It features a trapezoidal design, which allows a large volume of packing material and in turn...

If you're looking for a versatile and potent pipe, designed to boost both low-range and high-RPM performance, you can't do better than the RS-2. Durable and rust-resistant pipe...

Feature new, improved D.O.T. compliant LED light and housing Easy-to-use heat shrink solder sleeve butt connectors for all wiring Precision laser-cut stainless steel bracket tucks discreetly under...

Precision laser-cut stainless steel bracket tucks discreetly under the tail section of the motorcycle Black anodized CNC machined light housing with laser-etched Yoshimura logo Light housing...

RS-9T Dual Slip-On Muffler Dyno and track tested Lower center of gravity for better mass centralization Improved throttle response, and power in mid and top end More tractable power and improved...