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Yoshimura

Yoshimura RS-4 Slip-On Exhaust KTM 450 SX-F / FE / Husqvarna FC450 / RE 2018-2020

Item: P419268
45 Read 45 Reviews 33 Q&As Write a Review

Factory bike look combined with the unmistakable Yosh sound makes this exhaust irresistible! Read More

$636.84
Rebate Available! View Details

This product is vehicle specific.
Select a bike to ensure fitment.

Looking for a different bike? Change bike selection

Please select a Material to view availability.

Product Details

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

The Yoshimura RS-4 Slip-On exhaust has been put to the test and has proven its capabilities at the highest level of competition. In 2010 the RS-4 muffler helped Ryan Dungey claim the AMA 450 Supercross and Motocross championships in his rookie season. The Yoshimura-backed GEICO Honda team also took home both East and West Coast Supercross Lites titles in 2012 using the Yoshimura RS-4 exhaust.

Utilizing the same R&D that helped bring success at the national level has resulted in a unique exhaust design that provides an unrivaled combination of power and quiet exhaust note. The Yoshimura RS-4 Pipe features an innovative carbon cone end cap, a two staged stepped baffle, and a polyresonant duplex chamber which acts as a muffler within a muffler to help save weight and centralize mass.

Nearly all Yoshimura exhaust systems that have won Motocross or Supercross championships are members of the Yoshimura Signature Series. All Signature Series pipes have been tested, documented, and marked as required by federal and state regulations. Working in conjunction with factory race teams has allowed Yoshimura to develop a exhaust system that gives you an unparalleled competitive advantage.

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
  • Yoshimura Signature Series muffler
  • 100% Made in the USA
Made in the USA
Product Style RevZilla Item # MFR. Product # Availability
Product Style Stainless Steel/Aluminum/Carbon Fiber RevZilla Item #1319758 MFR. Product #264622D320 AvailabilityIn Stock: Requires 1-2 business days of lead time prior to shipment
This product is vehicle specific.
Select a bike to ensure fitment.
This Product Fits
Husqvarna
FC450 2019, 2020
FC450 Rockstar Edition 2018, 2019
KTM
450 SX-F 2019, 2020
450 SX-F Factory Edition 2018, 2019
Product Description
Part Numbers
Fitment
45 Customer Reviews
45 4.5/5
33 Questions & 36 Answers

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