Description

RS-4 exhaust systems illustrates the endless cycle of development. Working in conjunction with the factory teams has provided us with new ways to increase performance, lower sound levels and centralize mass. The end result is a product that gives you an unparalleled competitive advantage.

Enhance your Yamaha YZ450F or WR450F with the Yoshimura RS-4 Exhaust Slip-On, part number 234832D320. Designed for optimal performance, this exhaust system features a pentagonal-shaped muffler that not only improves aesthetics but also maximizes internal volume for better exhaust flow. Crafted through close collaboration with factory teams, the RS-4 offers a perfect blend of increased power, reduced sound levels, and centralized mass, giving you a competitive edge on the trail or track. The polyresonant duplex front chamber and stepped, two-stage core baffle work together to refine exhaust sound and improve performance across a broad RPM range. Constructed from durable stainless steel, the RS-4 is built to withstand the rigors of off-road riding while providing a significant weight savings over stock components.

Features:

• Pentagonal-shaped muffler designed for optimal performance and aesthetics

• Maximized internal volume to improve exhaust flow and power output

• Polyresonant duplex front chamber for refined sound and increased efficiency

• Stepped, two-stage core baffle to optimize sound levels and performance

• Spark Arrestor/Sound Insert compatible for versatile riding conditions

Fitment:
Yamaha WR450F2019
Yamaha WR450F2020
Yamaha WR450F2021
Yamaha WR450F2022
Yamaha WR450F2023
Yamaha YZ450F2020
Yamaha YZ450F2021
Yamaha YZ450F2022
Yamaha YZ450FX2019
Yamaha YZ450FX2020
Yamaha YZ450FX2021
Yamaha YZ450FX2022
Yamaha YZ450FX2023