Yoshimura RS-4 Offroad Exhaust System for Husqvarna FC 450 and Gas-Gas MC 450F

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.

The Yoshimura RS-4 exhaust system is engineered to deliver exceptional performance for offroad motorcycle enthusiasts. Designed in collaboration with factory teams, this system enhances power output, reduces sound levels, and improves overall handling by centralizing mass. Crafted with a pentagonal-shaped muffler and maximized internal volume, the RS-4 ensures optimal exhaust flow and efficiency. Its polyresonant duplex front chamber and stepped, two-stage core baffle work together to fine-tune sound and performance, providing a competitive edge on the trail or track. Compatible with a range of models including Husqvarna FC 450 and Gas-Gas MC 450F from 2019 to 2023, this slip-on system is ideal for riders seeking to upgrade their motorcycle’s exhaust setup. The product features spark arrestor and sound insert compatibility, making it versatile for different riding environments and regulations. Built from high-quality materials, the RS-4 is designed for durability and performance under demanding offroad conditions. Simple to install, it offers a significant upgrade over stock exhaust systems, emphasizing both power gains and sound quality. Whether competing or riding recreationally, this exhaust system provides a noticeable performance boost while maintaining compliance with offroad noise standards.

Features:

• Pentagonal-shaped muffler for optimized exhaust flow and aesthetics

• Maximized internal volume to enhance performance and sound tuning

• Polyresonant duplex front chamber for improved exhaust efficiency

• Stepped, two-stage core baffle for refined sound and performance control

• Spark arrestor and sound insert compatibility for versatile use and compliance

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

FITMENT:
2019 Husqvarna FC 450
2019 KTM 450 SX-F
2019 KTM 450 XC-F
2020 Husqvarna FC 450
2020 KTM 450 SX-F
2020 KTM 450 XC-F
2021 Gas-Gas EX 450F
2021 Gas-Gas MC 450F
2021 Husqvarna FC 450
2021 KTM 450 SX-F
2021 KTM 450 XC-F
2022 Gas-Gas EX 450F
2022 Gas-Gas MC 450F
2022 Husqvarna FC 450
2022 KTM 450 SX-F
2022 KTM 450 XC-F
2023 Gas-Gas EX 450F
2023 Gas-Gas MC 450F