Yoshimura Suzuki DR-Z400S 00-13 Signature RS-4 Dual Full Exhaust System SS-AL-CF

The work that went into developing the RS-4 muffler design paid big dividends in 2010 with winning the AMA 450 Supercross and Motocross Championship series, and again in 2012 winning both 250 Supercross Lites titles. That same R&D has been directed to developing the current generation RS-4 for Road Racing 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.

• 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 tail-pipe

Yoshimura Signature Series Exhaust - an offering of exhaust systems that a dealer can install with confidence. Our Signature Series lineup is the answer for today's dealer who is faced with a challenging marketplace. The applications for the Signature Series line cover the entire powersports spectrum, including many of our off-road applications. Everyone of our Championship Winning Motocross exhaust systems and nearly all of out ATV/Side-by-Side applications are all members of the Signature Series Family. All Signature Series components are tested, documented, and marked as required by federal and state regulations.

Yoshimura RS-4 Muffler Option Key:

RS-4 (SLIP-ON OR FULL SYSTEM) SS-SS-CF:
Stainless Steel Sleeve with Carbon Fiber End-Cap

RS-4 (SLIP-ON OR FULL SYSTEM) SS-CF-CF:
Carbon Fiber Sleeve with Carbon Fiber End-Cap

Instructions & Exploded View

Yoshimura Exhaust Description Guide