SPC Performance AL SHIMS 2.5X5X4 deg. (6)

SPC Performance AL SHIMS 2.5X5X4 deg. (6)

Marsoni

M251S

$55.11

Get it in 3 business days with 1 day shipping. Friday, May 29

SPC Performance AL SHIMS 2.5X5X4 deg. (6)These economical over the road heavy duty truck axle shims a re our lowest cost option. With average compression strength and hardness these shims are available in a large variety o f sizes and offer the technician a cost effective means to c orrect caster on over the road trucks and trailers. NOTE: Or dering one Part Number supplies Six Shims in a box. When pla cing order spring pad length and width are needed. California Residents WARNING

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Sticks well. Definitely thicker and nicer than the Kilmat version. If I were buying again I would just buy more of this, the value is better even though you get less total coverage per pack. Can be cut to size easily, we used a box cutter which got a little gummed but but not too bad. we were able to get it in and around everywhere we needed to put it and it held up well as we were mashing it into weird spots. It doesnt smell hardly at all while being applied and once its on there is no smell whatsoever The product is great for what it is. 4 stars only because I think it gets oversold for how much this alone can do. We did notice a slight reduction in noise but nowhere near the multiple decibels we see claimed everywhere. If your vehicle is mostly quiet but just has that little bit getting through this will probably do wonders, If you have a vehicle where there's significant engine noise in the cabin you'll need more than just this to bring that down.

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Reviewed in the United States on September 12, 2025

Verified Purchase

JaroldHarold

Draper, US

★★★★★ 5

Great product!

Style: 30 sqft

I can say this product makes a huge difference with road noise and is cleaner and easy to work with when applying compared to other mats that cost about the same price.

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Reviewed in the United States on February 14, 2026

Verified Purchase

Iraq veteran 83

Lake Worth, US

★★★★★ 5

Very heavy and thick

Style: 30 sqft

I purchased mini brands of sound ending and this is by far the heaviest sound deadening I've ever ordered. I'm not installed yet but I have a good feeling that is going to work exceptionally in blocking sound. If weight is a concern for you I would recommend a lighter product however if sound quality and a quiet ride is your priority this is the one for you.

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Reviewed in the United States on March 18, 2026