Yoshimura R&D of America, Inc.

KTM 250 SX-F 13-15 RS-4 Titanium Full Exhaust, w/ Titanium Muffler

KTM 250 SX-F 13-15 RS-4 Titanium Full Exhaust, w/ Titanium Muffler - Main image
KTM 250 SX-F 13-15 RS-4 Titanium Full Exhaust, w/ Titanium Muffler - View 2KTM 250 SX-F 13-15 RS-4 Titanium Full Exhaust, w/ Titanium Muffler - View 3KTM 250 SX-F 13-15 RS-4 Titanium Full Exhaust, w/ Titanium Muffler - View 4KTM 250 SX-F 13-15 RS-4 Titanium Full Exhaust, w/ Titanium Muffler - View 5
$339.32 $499 In stock

Category: Signature Series Exhaust System

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
  • Weight: 1.2 lbs lighter than stock configuration
  • Repack Kits, optional Inserts and Spark Arresters are available for all models
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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Ava X. ★★★★★

The titanium muffler is noticeably lighter than the stock can, and the RS-4's race-proven design gives it a crisp, aggressive bark that's pure motocross. Bolt-on fit was straightforward, and the power gains are exactly what I hoped for on the track.

Daniel ★★★★★

After struggling with the stock exhaust for three seasons, the weight savings off the back end is immediately noticeable when throwing the bike into corners. The titanium build also seems to hold up better to the heat and abuse of motocross practice. Finally feels like the power delivery matches the

Victoria ★★★★★

My last race weekend I finally felt the difference in corner exit drive—the power delivery is so much smoother and the titanium muffler drops a heap of weight off the rear. Bike flicks side to side like a 250 two-stroke now.

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