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Engine Sound Dampeners


Product Description

JNMDamp-Pro - for quieting your engine - from inside the covers. The Aerospace dampening material is layered and constrained viscoelastic (flexible and it flows) damper that converts the vibration energy into low level heat. Shown in the picture is the reflective foil side (foil is a hefty 6 mils). Material overall is 70 mils thick and very dense.

This kit includes magneto cover, sprocket cover, and clutch cover dampening device material cut to shape. They go INSIDE the covers so don't be too concerned with the look before installation, the material is dense and very sticky - yet will just flow to the edges of inside the covers and be contained by the thick foil and the cover, they are peel and stick (white backing) self adhesive. Works fine with our shift kit and our outer clutch cover - in fact used together makes the clutch nice and quiet. Your friends will wonder what you have done to your engine - under $15!!

Product Reviews

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  1. Great 5 Star Review

    Posted by on 02 27 2017

    Size is perfect. Very happy with this.

  2. 5 Star Review

    Posted by on 04 05 2014

    This kit for the price made a noticeable difference in general engine racket. Reqlly simple installation. SPB nailed it. AND MADE IN USA! thats what im talkin about.

  3. 5 Star Review

    Posted by on 08 25 2011

    Its a pretty good product it dulls the sounds of the gears a bit..Recommended..

  4. 5 Star Review

    Posted by on 07 06 2011

    Absolutely works ! Well worth the purchase and few minutes install time. Wicked fast service, too. Thank you SBP !

  5. 5 Star Review

    Posted by on 06 27 2011

    I was skeptical before ordering. What can some sticky rubber do inside the cover to kill the sound? I took a shot and placed the order on Wednesday, they were in Chattanooga on Saturday. I can’t believe the difference. The high pitched clutch noise is knocked down 95%. Chain and mag noise is down also. These things should be in every kit. Thanks Sick!

  6. 4 Star Review

    Posted by on 05 04 2011

    Super sticky makes for easy installation sounds great, excellent speedy service.

  7. 4 Star Review

    Posted by on 03 16 2011

    this product actually works it quieted down my engine gear noise id say a good 50 percent i would highly recomend them for ur next build

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