YOSHIMURA RS-4 Full System Exhaust SS/Al/CF 224500D320

The YOSHIMURA RS-4 Full System Exhaust SS/Al/CF, part number 224500D320, features a pentagonal-shaped muffler designed with maximized internal volume. Its polyresonant duplex front chamber and stepped, two-stage core baffle contribute to the system’s exhaust design.

This exhaust system is spark arrestor and sound insert compatible. It fits 2019–2024 Honda CRF450X models, the 2025 Honda CRF450X, and 2019–2021 Honda CRF450L models.

YOSHIMURA part number 224500D320 is identified by SKU 961-1215.

Features:

• Muffler: Pentagonal-shaped design
• Internal volume: Maximized internal volume
• Front chamber: Polyresonant duplex design
• Core baffle: Stepped, two-stage construction
• Compatibility: Spark arrestor and sound insert compatible
• Fitment: Fits 2019–2024 Honda CRF450X, 2025 Honda CRF450X, and 2019–2021 Honda CRF450L

Fitment:
Honda CRF450L 2019
Honda CRF450L 2020
Honda CRF450L 2021
Honda CRF450X 2019
Honda CRF450X 2020
Honda CRF450X 2021
Honda CRF450X 2022
Honda CRF450X 2023
Honda CRF450X 2024
Honda CRF450X 2025