Item Condition: This item has been used for test purposes and may show slight signs of use. There may be minor cosmetic damage such as scuffs, scratches, stains, chips or dings. The original packaging may or may not be present. This item is missing the spring puller tool.

Yoshimura RS-4 Exhaust System Yamaha YZ250F

The work that went into developing the Yoshimura RS-4 Exhaust System 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.

Features:

• Pentagonal-shaped sleeve
• Polyresonant front muffler chamber which helps reduce noise
• Two-stage stepped baffle
• Carbon fiber end-cap
• Stainless Steel or Titanium Head pipe
• CARB/EPA tailpipe emissions compliant
• 100% Made in the USA