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Quiet Insert, FMF Q4 & Powercore 4

Universal fit. May require additional adjustment or modification.
Made in USA WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

This Quiet Insert comes stock in all new FMF Q4 mufflers. If you lost yours, this is the replacement you need. It will fit Q4, Q4 Hex, Powercore and Powercore Hex mufflers. It will reduce the sound rating of the Power Core models, from about 99db down to about 96db.

Delayed stock from manufacturer, please ask for availability.

Add Anti-Seize

Backordered: currently processing orders from July 2021