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Yoshimura

Yoshimura RS-4 Slip-On Exhaust Yamaha YZ450F / FX / WR450F 2018-2023

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Motorcycle Muffler Repacking Explained and Made Simple by Yoshimura R&D

Stainless Steel/Aluminum/Carbon Fiber

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$669^.⁰⁰

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Material: Stainless Steel/Aluminum/Carbon Fiber

Blemished/Refurbished

This item is available as a Blem/Refurb. These are items that cannot be sold as "New" merchandise and are limited to stock on hand. See the product details for a description of the product's condition.

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Yoshimura RS-4 Slip-On Exhaust Yamaha YZ450F / FX / WR450F 2018-2023 Installation

Installation (pdf)

Yoshimura RS-4 Slip-On Exhaust Yamaha YZ450F / FX / WR450F

If you're looking for serious performance then you came to the right place, introducing the Championship winning RS-4 Slip-On exhaust. . A unique design that provides an unrivaled combination of power and a quiet exhaust note. The RS-4 features a Polyresonant duplex chamber, a two-staged stepped baffle and an innovative carbon cone end cap.

Features:

Pentagonal-shaped sleeve
Polyresonant front muffler chamber which helps reduce noise
Two-stage stepped baffle
Carbon fiber end-cap
CARB/EPA tailpipe emissions compliant
100% Made in the USA

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This product is vehicle specific. Click here to select your vehicle to ensure fitment.

Yamaha: WR450F 2019, 2020, 2021, 2022, 2023; YZ450F 2018, 2019, 2020, 2021, 2022; YZ450F Monster Energy Race Edition 2022; YZ450FX 2019, 2020, 2021, 2022, 2023

This item is also available for 31 other models:

Gas Gas: EX 350F 2021-2023

Honda: CRF250L 2017-2020; CRF250L ABS 2019-2020; CRF250L Rally 2017-2020; CRF250L Rally ABS 2019-2020; CRF300L 2021-2025; CRF300L ABS 2021-2024; CRF300L Rally 2021-2025; CRF300L Rally ABS 2021-2024; CRF300LS 2023-2025; CRF450X 2019-2026

Husqvarna: FC250 2019-2022; FC350 2019-2022; FE350s 2024-2026; FE350s Heritage 2025; FE501s 2024-2026; FE501s Heritage 2025

KTM: 250 SX-F 2019-2022; 250 SX-F Factory Edition 2021; 250 XC-F 2019-2022; 350 EXC-F 2024-2026; 350 SX-F 2019-2022; 350 XC-F 2019-2022; 350 XC-F Kailub Russell 2021; 500 EXC-F 2024-2026

Yamaha: WR450F 2016-2018; YZ250F 2024-2026; YZ250F 70th Anniversary Edition 2026; YZ250F Monster Energy Race Edition 2024-2025; YZ450F 2014-2017; YZ450FX 2016-2017

Product Style	Item #	Store SKU	Manufacturer Product #	Availability
Product Style Stainless Steel/Aluminum/Carbon Fiber	Item # 1764788	Store SKU	Manufacturer Product # 234832D320	Availability In Stock: Ships next business day

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