Signature RS4 Aluminum Slip On Exhaust - For 16-18 WR450F 14-17 YZ450F/FX

For 16-18 WR450F 14-17 YZ450F/FX

• Color: Silver
• End Cap Finish: Gloss
• End Cap Material: Carbon Fiber
• Finish: Natural
• Mid Pipe Material: Stainless Steel
• Mounting Style: Slip-On
• Muffler Sleeve Material: Aluminum
• Type: Muffler Assembly
• UPC: 0840025903937

• Pentagonal-shaped sleeve
• Front muffler cap functions as a polyresonant chamber which helps reduce noise
• Two-stage stepped baffle

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.