Yoshimura RS-4 Slip-On Muffler for Kawasaki KX450F and KX450X (2019-2023) | Offroad Exhaust System

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 Kawasaki KX450F or KX450X with the Yoshimura RS-4 Slip-On Muffler, designed for offroad performance and durability. Crafted to optimize combustion efficiency, this exhaust system features a pentagonal-shaped muffler that provides a distinctive look while maximizing internal volume for improved exhaust flow. Its advanced design works in conjunction with factory components to increase overall power output, reduce sound levels, and centralize mass for better handling and balance.
Constructed with a polyresonant duplex front chamber, the RS-4 muffler effectively reduces unwanted noise while maintaining an aggressive exhaust note suitable for competitive riding. The stepped, two-stage core baffle enhances exhaust scavenging, which translates to better throttle response and increased horsepower. The muffler is compatible with spark arrestors and sound inserts, allowing customization based on your riding environment and noise regulations.
Installation is straightforward thanks to its slip-on design, making it an ideal upgrade for riders seeking improved performance without extensive modifications. The Yoshimura RS-4 slip-on system is engineered for durability and consistent performance, making it a reliable choice for offroad enthusiasts who demand the best from their equipment. Whether you're racing or enjoying trail riding, this exhaust system delivers a noticeable boost in power, sound quality, and overall riding experience, all while complying with noise standards and offering a sleek aesthetic.

Features:

• Pentagonal-shaped muffler for a distinctive look

• Maximized internal volume to improve exhaust flow

• Polyresonant duplex front chamber for noise reduction

• Stepped, two-stage core baffle for enhanced scavenging

• Compatible with spark arrestor and sound inserts for customization

Product Type: Exhaust
Exhaust Type: Slip-On Muffler
Model: RS4
Segment: Offroad
Division: Exhaust
Class: Mufflers, Pipes, & Systems
Sub Class: Mufflers, Silencers, Slip Ons

FITMENT:
2019 Kawasaki KX450F
2020 Kawasaki KX450F
2021 Kawasaki KX450F
2021 Kawasaki KX450X
2022 Kawasaki KX450F
2022 Kawasaki KX450X
2023 Kawasaki KX450F
2023 Kawasaki KX450X