At DMG Motorsports, we present the Yoshimura RS-4 Signature Series Dual Full-System Exhaust (SS-CF-CF, 116600D220) — a hand-fabricated twin-muffler setup built to give your Suzuki DR-Z400S/SM an unmistakable hot-rod stance and sound. This system traces its roots back to a custom "Twin Pipe" kit originally built for racing legend Kevin Schwantz, who wanted his Super Motard to look and sound like a true hot rod, and Yoshimura has refined that same design into the RS-4 dual exhaust you can run today. Every pipe in this system is completely hand-fabricated and TIG-welded to perfection, starting with a durable stainless steel header and Y-pipe that feed into twin carbon fiber RS-4 mufflers, delivering the incredible looks and performance Yoshimura is known for. As part of Yoshimura's Signature Series, this exhaust is engineered for dealers and riders who need components that are tested, documented, and marked to meet federal and state noise/emissions requirements, making it a confident choice for street-legal off-road applications. Each RS-4 muffler features a pentagonal-shaped sleeve with maximized internal volume, a polyresonant duplex front chamber that helps tame noise, and a stepped two-stage core baffle for a refined, aggressive exhaust note. The kit is spark arrestor/sound insert compatible and arrives with everything needed to complete the installation, including a custom Yoshimura kickstand.

Features:

• Completely hand-fabricated dual full exhaust system, TIG-welded to perfection
• Stainless steel header and Y-pipe mated to twin carbon fiber RS-4 mufflers
• Pentagonal-shaped muffler sleeve design
• Maximized internal volume for optimized flow and tone
• Polyresonant duplex front chamber that helps reduce muffler noise
• Stepped, two-stage core baffle for refined sound control
• Spark Arrestor/Sound Insert compatible
• Part of Yoshimura's Signature Series - tested, documented, and marked to meet federal/state regulations
• Includes custom Yoshimura kickstand and mounting hardware
• Fits Suzuki DR-Z400S and DR-Z400SM models

Fitment