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The Yoshimura RS-4 Slip-On Exhaust KTM 450 SX-F / FE / Husqvarna FC450 / RE 2018-2022 has been improved and replaced by the

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Yoshimura RS-4 Slip-On Exhaust KTM 450SX-F / 450XC-F / 500 EXC-F / Husqvarna FC450 / FX450-

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Yoshimura RS-4 Slip-On Exhaust KTM 450 SX-F / FE / Husqvarna FC450 / RE 2018-2022

Name: Yoshimura RS-4 Slip-On Exhaust KTM 450 SX-F / FE / Husqvarna FC450 / RE 2018-2022
Brand: Yoshimura
SKU: 1319758
Price: 739.0 USD
Availability: OutOfStock
Rating: 4.60 (42 reviews)

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

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Material: Stainless Steel/Aluminum/Carbon Fiber

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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 KTM 450 SX-F / FE / Husqvarna FC450 / RE 2018-2022 Installation

Installation (pdf)

Yoshimura RS-4 Slip-On Exhaust KTM 450 SX-F Factory Edition / Husqvarna FC450 Rockstar Edition

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