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RS4 Aluminum Stainless Full Exhaust - For 17-19 KX250F

Retail Price: $631.57
You save: $31.58  (5%)
Our Price: $599.99

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  • Model: 242930D320
  • Manufactured by: Yoshimura


For 17-19 KX250F

  • End Cap Material: Carbon Fiber
  • Header Material: Stainless Steel
  • Muffler Sleeve Material: Aluminum
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
  • Stainless steel header and tail-pipe
  • Weight: 0.4 lbs lighter than stock configuration

This part fits the following


This product was added to our catalog on Thursday 14 September, 2017.

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