At DMG Motorsports, we present the Yoshimura RS-4 2M-Max Quiet Insert (INS-2M28-K) — a genuine Yoshimura replacement component engineered to dial in the sound output of your RS-4 slip-on exhaust system without sacrificing the performance you built your bike for. Whether you're prepping for a track day with strict sound requirements or just want to tone down your RS-4 for trail riding, this insert kit gives you a straightforward way to meet noise regulations while keeping your Yoshimura exhaust in play.

Features:

• Purpose-built for RS-4 mufflers: Designed as a replacement low-volume insert specifically for Yoshimura RS-4 exhaust systems with a 1.5-inch outlet diameter.
• FIM/AMA sound compliance: Low-volume inserts are intended for non-spark-arrestor equipped bikes and help reduce noise levels to meet AMA or FIM competition sound requirements.
• 2M-Max configuration: Part of Yoshimura's 2-Meter Max lineup of replacement low-volume insert kits, offered as an optional upgrade for applications requiring different sound restriction levels, with decibel reduction varying by application.
• Complete insert kit: Includes the low-volume insert tube, end-cap collar, and set screw needed for installation.
• Factory-fit engineering: Designed to fit a standard-equipped motorcycle as delivered from the factory; compatibility with non-OE accessories should be confirmed before installation.
• Sold individually: Each insert is sold as a single unit for straightforward replacement or upgrade.
• Genuine Yoshimura part: Backed by Yoshimura's reputation for precision-engineered exhaust components, ensuring proper fitment on compatible RS-4 systems.