Yoshimura RS-4 Exhaust System Kawasaki KX450F 2009-2015
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  • Yoshimura RS-4 Exhaust System Kawasaki KX450F 2009-2015 - Stainless Steel/Aluminum/Carbon Fiber
  • Yoshimura RS-4 Exhaust System Kawasaki KX450F 2009-2015 - Titanium/Carbon Fiber/Carbon Fiber
  • Yoshimura RS-4 Exhaust System Kawasaki KX450F 2009-2015 - Titanium/Titanium/Carbon Fiber
  • Yoshimura RS-4 Exhaust System Kawasaki KX450F 2009-2015
  • Yoshimura RS-4 Exhaust System Kawasaki KX450F 2009-2015
  • Yoshimura RS-4 Exhaust System Kawasaki KX450F 2009-2015
  • Yoshimura RS-4 Exhaust System Kawasaki KX450F 2009-2015
  • Yoshimura RS-4 Exhaust System Kawasaki KX450F 2009-2015

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MSRP
$639.00 - $995.00
Savings (10%):
$63.90
Price
$575.10

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Video Reviews (2)

Yoshimura RS-4 Exhaust System Kawasaki KX450F 2009-2015 Videos

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 KX450F

The Yoshimura RS-4 full exhaust system has been put to the test and has proven its capabilities at the highest level of competition. In 2010 the RS-4 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 increase performance, keep sound levels to a minimum and centralize mass. The end result is 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
  • Yoshimura Signature Series muffler
  • Carbon fiber end-cap
  • Stainless Steel or Titanium Head pipe
  • CARB/EPA tailpipe emissions compliant
  • 100% Made in the USA

Resources:

4.9 / 5
Bang For The Buck
4.8 / 5
Features
4.8 / 5
Style
5 / 5
Ease Of Install
4.7 / 5
Fit & Finish
4.8 / 5
Durability
4.9 / 5
This Product Fits:
Kawasaki
KX450F 20092015
Product Style RevZilla Item # Manufacturer Product # Availability
Stainless Steel/Aluminum/Carbon Fiber 1014500 244700D321 In Stock: Ships within 24 hours
Titanium/Carbon Fiber/Carbon Fiber 1014489 244701D220 Available: Requires 3-5 business days lead time prior to shipment
Titanium/Titanium/Carbon Fiber 1014499 244701D720 In Stock: Ships within 24 hours

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Returns

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Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

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