At DMG Motorsports, we present the Yoshimura RS-4 Header/Canister/End Cap Exhaust System in SS-AL-CF configuration (part number 234700D320) — a complete Enduro Series full exhaust built for riders who demand real off-road performance without sacrificing compliance or durability. This system pairs a stainless steel header and tail-pipe with an aluminum-sleeved muffler and a striking carbon fiber end-cap, delivering the ideal balance of strength, weight savings, and refined sound. Born from Yoshimura's decades of off-road racing heritage, the RS-4 platform has been continually refined to give riders an unrivaled combination of usable power and a quiet, controlled exhaust note straight from the box.

Engineered as part of Yoshimura's Enduro Series, this full system arrives ready for trail duty with a USFS-approved spark arrestor and forest-friendly sound levels, making it a smart choice for riders who need tailpipe emissions compliance without giving up performance. The pentagonal-shaped muffler sleeve maximizes internal volume while the polyresonant duplex front chamber and stepped, two-stage core baffle work together to shape power delivery and keep noise in check. Finished with a turn-out carbon fiber end cap, this exhaust is a proven upgrade for riders chasing both looks and results.

Features:

• Complete header, canister, and end cap full exhaust system in SS-AL-CF construction (stainless steel header, aluminum muffler sleeve, carbon fiber end-cap)
• Pentagonal-shaped muffler design with maximized internal volume
• Polyresonant duplex front chamber that functions as an additional noise-reducing chamber
• Stepped, two-stage core baffle for refined power delivery and sound control
• Turn-out carbon fiber end-cap for reduced weight and aggressive styling
• Stainless steel tapered header and tail-pipe for durability and weight reduction
• USFS-approved spark arrestor equipped, with Spark Arrestor/Sound Insert compatibility
• Forest-friendly noise levels with CARB/EPA tailpipe emissions compliance as part of Yoshimura's Enduro Series lineup
• Part of Yoshimura's race-proven RS-4 exhaust family, developed from years of AMA off-road and motocross competition experience

Fitment