Yoshimura

The 2019 and 2020 East 250cc Supercross Champion! The CRF250R's new twin cam engine and unique muffler configuration gave us the opportunity to create an entirely new system built specifically for...

The perfect accessory for your Yamaha YZ250F/YZ450F is our custom crafted Heat Shield Kit for our RS-12 exhaust systems. This kit is perfect for deflecting a little extra heat from the muffler...

The perfect accessory for your Yamaha YZ250F/YZ450F is our custom crafted Heat Shield Kit for our RS-12 exhaust systems. This kit is perfect for deflecting a little extra heat from the muffler...

The perfect accessory for your Yamaha YZ250F/YZ450F is our custom crafted Heat Shield Kit for our RS-12 exhaust systems. This kit is perfect for deflecting a little extra heat from the muffler...

The perfect accessory for your Yamaha YZ250F/YZ450F is our custom crafted Heat Shield Kit for our RS-12 exhaust systems. This kit is perfect for deflecting a little extra heat from the muffler...

The perfect accessory for your Yamaha YZ250F/YZ450F is our custom crafted Heat Shield Kit for our RS-12 exhaust systems. This kit is perfect for deflecting a little extra heat from the muffler...

The perfect accessory for your Yamaha YZ250F/YZ450F is our custom crafted Heat Shield Kit for our RS-12 exhaust systems. This kit is perfect for deflecting a little extra heat from the muffler...

Leaning on many of its bigger sibling's handling and styling cues, the new Honda CRF250R boasts many new features. It's lighter, more agile and is sure to be up to the task of reaching top podium...

Leaning on many of its bigger sibling's handling and styling cues, the new Honda CRF250R boasts many new features. It's lighter, more agile and is sure to be up to the task of reaching top podium...

Yoshimura has been working tirelessly on development with American Honda HRC's engineers to achieve maximum performance and mass centralization, to optimize rider usability. Yoshimura achieved all...

The RS-4 is pentagonal shaped muffler that features a carbon fiber cone end cap, two staged stepped baffle and striking good looks. The RS-4 muffler features a new front cap design that functions...

The work that went into developing the RS-4 muffler design paid big dividends in 2010 with Ryan Dungey winning the AMA 450 Supercross and Motocross Championship series as a rookie in the same year,...