HMF Quiet Core Insert

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The HMF Quiet Core is an insert made of 201 Stainless Steel and installs on most HMF exhausts in seconds. It's designed for sound sensitive riding areas and decreases the sound lev el approximately 3-6dB. Quiet Core Fits: Peformance Series Swamp & Swamp XL Series Penland Series (Torque Range Modifier removed) Signature X Series Show more