YOSHIMURA RS-4 Signature Series Demper Built tough from the bottom

Built tough from the bottom up

The Water pump Protectors are highly resistant plastic parts that will protect against impacts and abrasion

dirst and detergents from entering your intake when you clean the airbox

Ergonomically pre-shaped knee works with most guards

Leather heat shield panels fastened with high-tension

YOSHIMURA RS-4 Signature Series Demper Built tough from the bottomWhile other exhaust brands just carried over their Yamaha YZ250F offerings to include 2024 model, on the dyno and track, the new YZ told us there was more on the table. So our R&D team went to work to optimize the new Yamaha. Revised for the 2024 is our RS 4 slip on for the new YZ250F. Adding 1% max HP and 1. 2% max torque, the RS 4 slip on is a great option for adding some power. RS 4 also has the ability to add a spark arrestor for off road