YOSHIMURA RS-4 Signature Series Demper Stage 1 : increases torque

Stage 1 : increases torque and power with no additional modifications

Sprocket bolts have threadlock patches for a secure double lock

with no welding

we strongly advise these preparations to be handled by qualified professionals and with the adapted tools

YOSHIMURA RS-4 Signature Series Demper Stage 1 : increases torqueWhile 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