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Yoshimura RS-4 Exhaust System Kawasaki KX250F 2017-2020

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Stainless Steel/Aluminum/Carbon Fiber

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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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This product is legal in California only for racing vehicles which may never be used, registered or licensed for use upon a highway.

Yoshimura RS-4 Exhaust System Kawasaki KX250F 2017-2020 Resources

Installation (pdf)

Yoshimura RS-4 Exhaust System Kawasaki KX250F

The work that went into developing the Yoshimura RS-4 Exhaust System design paid big dividends in 2010 with Ryan Dungey winning the AMA 450 Supercross and Motocross Championship series as a rookie in the same year, and again in 2012 with the Yoshimura-backed GEICO Honda team winning both 250 Supercross Lites titles. That same R&D has been directed to developing the current generation RS-4 — 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
Stainless Steel or Titanium Head pipe
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.

Kawasaki: KX250F 2017, 2018, 2019, 2020

This item is also available for 81 other models:

Gas Gas: MC 250F 2021-2023; MC 350F 2022

Honda: CRF250L 2013-2016; CRF250L 2017-2020; CRF250L ABS 2019-2020; CRF250L Rally 2017-2020; CRF250L Rally ABS 2019-2020; CRF250R 2010; CRF250R 2011-2013; CRF300L 2021-2023; CRF300L ABS 2021-2023; CRF300L Rally 2021-2023; CRF300L Rally ABS 2021-2023; CRF300LS 2023; CRF450R 2009-2010; CRF450R 2011-2012; CRF450X 2019-2024

Husqvarna: FC250 2016-2018; FC250 2019-2022; FC350 2016-2018; FC350 2019-2022; FC450 2019-2022; FC450 2016-2018; FC450 Rockstar Edition 2018-2021; FS450 2021-2022; FX350 2017-2018; FX350 2019-2022; FX450 2019-2022; FX450 2017-2018

KTM: 250 SX-F 2016-2018; 250 SX-F 2019-2022; 250 SX-F 2012; 250 SX-F 2013-2015; 250 SX-F Factory Edition 2015; 250 SX-F Factory Edition 2021; 250 XC-F 2016-2018; 250 XC-F 2019-2022; 350 EXC-F 2012; 350 SX-F 2016; 350 SX-F 2019-2022; 350 SX-F 2013-2015; 350 SX-F 2011-2012; 350 XC-F 2016-2018; 350 XC-F 2019-2022; 350 XC-F 2014-2015; 350 XC-F Kailub Russell 2021; 450 SMR 2021-2022; 450 SX-F 2019-2022; 450 SX-F 2016-2018; 450 SX-F 2013-2015; 450 SX-F Factory Edition 2018-2021; 450 SX-F Factory Edition 2012-2014; 450 XC-F 2017-2018; 450 XC-F 2013-2015

Kawasaki: KX250F 2010-2016; KX450 2021-2023; KX450F 2009-2015; KX450F 2016-2018; KX450F 2019-2020; KX450SR 2022-2023; KX450X 2021-2023

Suzuki: DR-Z400S 2000-2024; DR-Z400SM 2004-2024; RMX450Z 2010-2011; RMZ250 2010-2016; RMZ250 2019-2024; RMZ450 2008-2017; RMZ450 2018-2024

Yamaha: WR250F 2015-2018; WR450F 2012-2015; WR450F 2019-2020; YZ250F 2014-2018; YZ250F 2007-2013; YZ250F 2019-2020; YZ250FX 2015-2018; YZ450F 2010-2013; YZ450F 2014-2017; YZ450F 2020-2022; YZ450F 2018-2019; YZ450F Monster Energy Race Edition 2022; YZ450FX 2019-2020

Product Style	Item #	Store SKU	Manufacturer Product #	Availability
Product Style Stainless Steel/Aluminum/Carbon Fiber	Item # 1243306	Store SKU	Manufacturer Product # 242930D320	Availability In Stock: Ships within 24 hours