Yoshimura

After over three years in development and testing we are pleased to announce the RS-12 is here! With the help of incredibly talented factory sponsored athletes, technicians, devoted engineers and a...

The most anticipated 450cc motocross bike for 2021 is here! With an all-new designed chassis and engine, the new Honda CRF450 is sure to set new records. Our new RS-12 system for the new Honda CRF450...

The most anticipated 450cc motocross bike for 2021 is here! With an all-new designed chassis and engine, the new Honda CRF450 is sure to set new records. Our new RS-12 system for the new Honda CRF450...

Red Rider off-road fans can now rejoice as Honda has now released their CRF450X. A serious offering to take on the 450cc off-road category. As soon as we got our hands on the CRF450X we rolled up our...

The 2019-20 Honda CB300R is a naked entry level bike that has the foundation to be a fun track day bike, so we thought let's make the track days better for this 286cc single cylinder bike. Right off...

Yamaha's YZ250F is the choice of many rippers in the 250 class. Yoshimura, in our endless endeavor to make the best, most usable power, we have refined our Yamaha YZ250F full systems. Our new RS-4...

Yamaha's YZ250F is the choice of many rippers in the 250 class. Yoshimura, in our endless endeavor to make the best, most usable power, we have refined our Yamaha YZ250F full systems. Our new RS-4...

For 2018 Yamaha made some major refinements to the already potent YZ450F. Adding to the usable and tractable power is how we make the new YZ450F even better. Now there can be more power to rip...

For 2018 Yamaha made some major refinements to the already potent YZ450F. Adding to the usable and tractable power is how we make the new YZ450F even better. Now there can be more power to rip...

For 2018 Yamaha made some major refinements to the already potent YZ450F. Adding to the usable and tractable power is how we make the new YZ450F even better. Now there can be more power to rip...

The work that went into developing the RS-4 muffler has paid big dividends in Off-road Racing; winning multiple Supercross and Motocross titles since it's inception. We've developed the current...

The work that went into developing the RS-4 muffler has paid big dividends in Off-road Racing; winning multiple Supercross and Motocross titles since it's inception. We've developed the current...