At DMG Motorsports, we present the Yoshimura RS-4 Header/Canister/End Cap Full Exhaust System (SS-AL-CF, part #242930D320) — a race-bred, Signature Series system built to help you extract more usable power without sacrificing that unmistakable Yoshimura sound. This system pairs a durable stainless steel header with an aluminum canister and a sharp carbon fiber end cap, giving you a lightweight, bolt-on upgrade backed by decades of factory racing development.

Features:

• Pentagonal-shaped muffler with maximized internal volume for optimized flow and tone
• Polyresonant duplex front chamber that acts as a muffler within a muffler to help save weight and centralize mass
• Stepped, two-stage core baffle engineered to boost performance while keeping sound levels in check
• Front muffler cap that functions as a polyresonant chamber which helps reduce noise
• Innovative carbon fiber cone end cap for a lightweight, race-inspired finish
• Durable high-grade stainless steel tapered header and mid-pipe for long-lasting reliability
• Spark Arrestor/Sound Insert compatible for trail and track versatility
• Part of Yoshimura's Signature Series lineup, where all components are tested, documented, and marked as required by federal and state regulations
• Race-proven design — 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
• Fits Kawasaki KX250F 2017-2019 models (verify fitment before ordering)

Fitment