Yoshimura RS-4 Header/Canister/End Cap Exhaust System for Yamaha YZ450FX and WR450F

The Yoshimura RS-4 Exhaust System is engineered to deliver superior performance and durability for offroad motorcycles. Crafted from high-quality stainless steel, this full system optimizes exhaust flow with a pentagonal-shaped muffler, maximizing internal volume for enhanced power delivery. The design features a polyresonant duplex front chamber and a stepped, two-stage core baffle, which work together to improve sound quality and reduce backpressure, resulting in better throttle response and increased horsepower. The RS-4 styling offers a sleek, aggressive appearance that complements the rugged aesthetics of offroad bikes. Compatibility spans Yamaha YZ450FX, YZ450F, and WR450F models from 2014 to 2018, ensuring a precise fit for a range of offroad enthusiasts.

This exhaust system is designed with versatility in mind. It includes a spark arrestor and sound insert compatibility, making it suitable for various riding environments and regulations. The stainless steel construction guarantees longevity and resistance to corrosion, even in harsh offroad conditions. Installation is straightforward, with all necessary mounting hardware included. Whether you're looking for improved performance or a stylish upgrade, the Yoshimura RS-4 system offers a reliable solution for serious offroad riders seeking to enhance their motorcycle’s exhaust efficiency and aesthetic appeal.

Engineered for offroad applications, this exhaust system enhances your bike’s power output while maintaining a lightweight profile. The RS-4’s aggressive styling and advanced internal architecture make it a top choice for riders who demand both performance and durability from their exhaust components. Invest in the Yoshimura RS-4 to experience noticeable improvements in your motorcycle’s sound, power, and overall riding experience. Designed to seamlessly fit select Yamaha models, this system ensures a precise, secure installation that will stand up to the rigors of offroad riding.

Features:

• Pentagonal-shaped muffler for optimized exhaust flow

• Maximized internal volume for increased power

• Polyresonant duplex front chamber for sound tuning

• Stepped, two-stage core baffle for improved performance

• Compatible with spark arrestor and sound insert for versatile use

Product Type: Exhaust
Exhaust Type: Full System
Material: Stainless Steel
Styling: RS-4
Model: RS4
Segment: Offroad
Division: Exhaust
Class: Mufflers, Pipes, & Systems
Sub Class: Exhaust Systems

FITMENT:
2014 Yamaha YZ450F
2015 Yamaha YZ450F
2016 Yamaha WR450F
2016 Yamaha YZ450F
2016 Yamaha YZ450FX
2017 Yamaha WR450F
2017 Yamaha YZ450F
2017 Yamaha YZ450FX
2018 Yamaha WR450F
2018 Yamaha YZ450FX