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Our Ultra Silent insert further reduces sound levels with a reduction range of 3-6 decibels or more on some bikes.
The SILENT insert doesn't reduce the sound level but will redirect it and turn it away from the rider towards the ground.
Not compatible with two stroke end caps.
Sound levels at idle speed tested at 1' above and 1' be
5.0
9 ratings
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Perfect fit great noise reduction and still great power.
Joe · August 9, 2026
Product is machined very well and fits perfectly to billet cap.
Haven’t fired my bike up yet.