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5.0 out of 5 5.0 (1 review)

Yoshimura RS-4 Competition Series Exhaust System

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$536.95 - $945.95 $595.95 - $1,050.95 Save 10%!

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The Yoshimura RS-4 Competition Series Exhaust System speaks volumes for performance and offers increased horsepower & Torque. The RS-4 features a polyresonant duplex chamber, a 2 stagged stepped baffle and a innovative carbon end cap that give this exhausta quiet earthy note. Dominate the track or desert with the RS-4.
      -The next evolution in Yoshimura exhaust, the RS-4 delivers huge power at a very light weight
      -Offers better handling thanks to a lower centralized mass coefficient
      -Uniquely-styled pentagonal muffler body with a carbon fiber cone end cap
      -Front cap design functions as a polyresonant chamber to lower dB output while improving mid- to top-end power
      -Two-staged, stepped baffle
      -Tapered head pipe delivers optimal flow and performance
      -Stainless steel header
      -Competition series mufflers include spark-arrested 96 dB insert unless noted. Some models will include a 94 dB insert. Please        see product details when selected from drop down.

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by PowerReviews
Yoshimura RS-4 Competition Series Exhaust System

(based on 1 review)

Reviewed by 1 customer

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completly satisfied

By mattwhite

from nb, canada

See all my reviews


  • Easy Instalation
  • Sounds Great


    Best Uses

      Comments about Yoshimura RS-4 Competition Series Exhaust System:

      great shipping, Received before i expected it to
      bike sounds great

      Displaying review 1

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      Play Video How To Video - Dirt Bike Exhaust Installation
      A BikeBandit.com How To Video on Dirt Bike Exhaust Installation produced by Transworld Motocross.
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      Learn how to install a new exhaust system and more at BikeBandit.com!

      Specifications and Options

      Brand Yoshimura
      CARB Notice BikeBandit.com makes no representation or warranty with respect to on-highway use in California or any other state. Consult with the manufacturer as to any such exemptions before installing any add-on or modified emissions-related parts.
      Design RS4S Canister W/ turn out end cap
      End Cap Carbon Fiber
      Muffler Material Type Aluminum, Carbon Fiber
      Notes 96 dB, 96 dB, non-spark arrested, Dual Muffler; 96DB
      Header Stainless Steel