HMF Quiet Core Insert YCRF_bikes keeping the wearer cool during

keeping the wearer cool during rides

Ideal tool for checking and setting spark plug gap on almost any spark plug

Commonly found on 2-stroke 47/49cc units using a transmission box from the clutch drive to increase size of mini Chain (Type 1) to Type 2 Size Chain

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HMF Quiet Core Insert YCRF_bikes keeping the wearer cool duringThe 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 level approximately 3 6dB. Quiet Core Fits: Peformance Series Swamp & Swamp XL Series Penland Series (Torque Range Modifier removed) Signature X Series