MJM

KX450F 09-15 FULL YOSHI RS-4 SS/AL CF

In Stock - Last one!

$759.95 $749.95 AUD

Estimated Delivery between Mon 24-January and Wed 26-January

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The work that went into developing the RS-4 muffler has paid big dividends in Off-road Racing; winning multiple Supercross and Motocross titles since it's inception. We’ve developed the current generation RS-4 based on that research & development, and the result is a unique design that provides an unrivaled combination of power and quiet exhaust tone. The RS-4 features a Polyresonant duplex chamber and two-staged stepped baffle for increased performance, while a carbon cone end cap finishes off its innovative styling.


  • Pentagonal-shaped sleeve
  • Front muffler cap functions as a polyresonant chamber which helps reduce noise
  • Two-stage stepped baffle
  • Carbon fiber end-cap
  • Titanium header and tail-pipe
  • Repack Kits, optional Inserts are available for all models

SKU:YO244700D321
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