At DMG Motorsports, we present the Yoshimura RS-4 Exhaust Quiet Insert 1.5" (INS-14-K) — a genuine Yoshimura replacement part engineered to dial down the volume on your RS-4 muffler without sacrificing the performance you built your exhaust system for. Whether you're riding at a sound-restricted track, a noise-conscious trail system, or just want a more livable exhaust note on the street, this insert kit drops right into your existing Yoshimura RS-4 system for an easy, effective fix. Built to Yoshimura's exacting standards, it's the go-to solution for riders who need to meet AMA or FIM competition sound requirements while keeping their Yoshimura setup intact.

Features:

• Genuine Yoshimura replacement low-volume insert kit designed specifically for RS-4 mufflers
• 1.5" diameter insert for precise fitment on compatible RS-4 exhaust systems
• Non-spark arrested design intended for applications requiring reduced sound output
• Helps meet AMA and FIM competition sound restriction requirements
• Decibel reduction varies by application — check Yoshimura's insert chart to confirm fitment
• Kit includes the low-volume insert tube along with necessary hardware for installation
• Backed by Yoshimura's reputation for race-proven exhaust engineering
• SKU: 961-9005 | UPC: 0840025908741

Fitment