Yamaha YZ450F 2018 - 2021 RS4 Slip On SS-AL-CF

YOSHIMURA MOTORCYCE EXHAUST - RS4

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.

FEATURES:

• 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

PLEASE NOTE:

• images for illustration only 
• This product was designed to fit on a standard equipped motorcycle, as delivered from the factory. OE and aftermarket accessories not found on a bike as delivered from the factory may not be compatible with this product.
• ONLINE ONLY

Fitment Details

• Yamaha YZ450F 2018
• Yamaha YZ450F 2019
• Yamaha YZ450F 2020
• Yamaha YZ450F 2021