2019 marks a new quest for the Kawasaki brand to own the 450cc motocross class. By the looks of it, the new big-bore green machine looks like a strong contender, especially when paired with Yoshimura performance.

At Yoshimura, we saw an opportunity to make the new green offering live up to its potential. Power and torque is up across the entire range for both curves with the new KX! Max HP is up an incredible 1.7% and max torque is up 2%. The heart of the power is our RS-4 muffler with its Poly-resonant Duplex front chamber and added overall volume helps make the KX450F come alive.

If you're serious - it's only Yoshimura. Proudly made in the USA!

• Pentagonal-shaped sleeve
• Front muffler cap functions as a poly-resonant chamber which helps reduce noise
• Two-stage stepped baffle
• Carbon fibre end-cap
• Stainless tail-pipe
• Repack Kits, optional Inserts and Spark Arresters are available for all models

This product was designed to fit on a standard equipped motorcycle, as delivered from the factory. OE and Aftermarket accessories not found on a bike as delivered from the factory, may not be compatible with this product.