Yoshimura RS-4 Signature Series Slip-On Exhaust SS-AL-CF - 263502D321

Item # : 210669

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List : $679.95

$611.96

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Specs

  • Manufacturer: Yoshimura

Details

Yoshimura KTM 450/350/250 SX-F/XC-F/XC-W Enduro RS-4 SO SS-AL-CF

Stainless Steel Tail-pipe / Aluminum Muffler / Carbon Fiber End-Cap

The work that went into developing the RS-4 muffler design paid big dividends in 2010 with Ryan Dungey winning the AMA 450 Supercross and Motocross Championship series as a rookie in the same year, and again in 2012 with the Yoshimura-backed GEICO Honda team winning both 250 Supercross Lites titles. That same R&D has been directed to developing the current generation RS-4 — a unique design that provides an unrivaled combination of power and a quiet exhaust note. The RS-4 features a Polyresonant duplex chamber, a two-staged stepped baffle and an innovative carbon cone end cap.

  • 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 tail-pipe

*FITMENT NOTE: This system fits 350EXC-F and 500EXC only when license plate and turn signals are removed.


Installation Instructions


Exhaust Enduro Series In the Mid 90's Yoshimura didn't go to the dirt; the dirt came to Yoshimura. Enduro Series systems are an evolution of Yoshimura's early off road efforts crafting off-road exhaust systems. The Enduro Series are all equipped with USFS-approved spark arrestor, forest-friendly noise levels, and are tailpipe emissions compliant.

Manufacturer Part Number: 263502D321