Description

Yoshimura has been working extensively with OE’s and factory racing teams to develop racing-oriented parts that can also benefit the weekend warrior. Because we take racing seriously, we have utilized the most technologically advanced equipment available. Through the use of high-tech data acquisition and GPS tracking technology, similar to those used in Formula One racing, we’ve developed the best-performing products in the industry. With additional input from our racers, we have tuned everything from intakes to exhausts, and engines to engine management systems. Yoshimura is proud to play a role in the continuing development of UTV performance and racing.

Designed specifically for Honda CRF450R and RX models from 2017 to 2020, the Yoshimura RS-9T Header and Dual Exhaust System offers a significant upgrade for performance enthusiasts and professional racers alike. Crafted with precision and utilizing advanced manufacturing techniques, this system is engineered to enhance power, sound, and durability. Its compatibility with factory and aftermarket components ensures a seamless installation, making it an ideal choice for riders seeking to maximize their motorcycle’s potential.
Constructed with a pentagonal-shaped muffler, the system maximizes internal volume for improved exhaust flow and sound quality. The polyresonant duplex front chamber is designed to optimize resonance for a deep, aggressive exhaust note while reducing backpressure. The stepped, two-stage core baffle works to refine exhaust flow further, contributing to increased horsepower and torque across the RPM range. The inclusion of a USFS-approved spark arrester ensures that this system is suitable for use in off-road environments, meeting strict safety and environmental standards.
Yoshimura’s commitment to racing development is evident in every aspect of this exhaust system. Utilizing high-tech data acquisition and GPS tracking similar to Formula One technology, the company continuously refines its products based on real-world racing input. This dedication results in components that deliver exceptional performance for the serious rider, whether on the trail or the race track. The RS-9T system is not only about performance but also about reliability and compliance, ensuring peace of mind during every ride. With its lightweight design and high-quality materials, this exhaust system provides an excellent balance of weight savings and durability, making it a top choice for those looking to improve their motorcycle’s overall performance and sound profile.

Features:

• Pentagonal-shaped muffler for optimized exhaust flow and sound

• Maximized internal volume enhances performance and exhaust note

• Polyresonant duplex front chamber for resonance tuning and backpressure reduction

• Stepped, two-stage core baffle for improved flow and horsepower gains

• USFS-Approved Spark Arrester suitable for off-road use

Fitment:
Honda CRF450R2017
Honda CRF450R2018
Honda CRF450R2019
Honda CRF450R2020
Honda CRF450RX2017
Honda CRF450RX2018
Honda CRF450RX2019
Honda CRF450RX2020