Koni Sport (Yellow) Shock 99-05 Porsche 911 (996) Carrera 2 (excl. C4/ Turbo/ GT2/ GT3) - Rear

Koni Sport (Yellow) Shock 99-05 Porsche 911 (996) Carrera 2 (excl. C4/ Turbo/ GT2/ GT3) - Rear

Marsoni

M251S

$140.12

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

Koni Sport (Yellow) Shock 99-05 Porsche 911 (996) Carrera 2 (excl. C4/ Turbo/ GT2/ GT3) - RearSKU: 8241 1274SPORT Koni KONI Sport (yellow) 8241 externally adjustable, twin tube low pressure gas. KONI Sport 8241 Series yellow painted externally rebound adjustable twin tube low pressure gas charged shock absorber. Adjustable: Externally Adjustable Assembly Instructions: 1027 05 13 42 Category: Passenger Car Hardware Set: 71 50 05 638 0 Product Type: Car Tags (Group Identifier for Merchandising): Porsche 911 Title: Koni KONI Sport (yellow) 8241

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Your Koni Sport (Yellow) Shock 99-05 Porsche 911 (996) Carrera 2 (excl. C4/ Turbo/ GT2/ GT3) - Rear orders ship within 1-2 business days.

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Fast: 2-3 business days
Express: 1-2 business days

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We offer a 30-day return/exchange service after receiving.
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You receive 9 sheets of RUNSUNSPRII Car Sound Deadening Mat that each measure 9.75" x 15.75". This calculates to a total of 9.6 square feet in total for all of the sheets. Of all the different styles of sound deadening mats, foil lined butyl is the best type for eliminating vibration. This quality product has a printed gridwork of 2-inch squares on the liner to aid in cutting the correct sized pieces. Even with as sticky as this product is, it is super easy to cut to shape with one pass of a razor blade. OEM auto manufacturers use this same kind of product extensively on the inner structure for sound deadening and to block sound and air transmission through all sizes of holes and cutouts. Because it is highly waterproof, it also is perfect for blocking areas to prevent water intrusion. The very sticky pads adhere to all surfaces and are very flexible and will conform to fit many areas. Because it is thin, it is ideal to install under interior trim panels without causing interference with how the panels fit.

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Reviewed in the United States on January 26, 2026

EverydayConsumerEddy

New York, US

★★★★★ 5

Solid quality and good price

Size: 10 sqft

I bought this for my custom built camper van and it’s been great so far. For $24, the amount of coverage you get is totally fair, and I’ll probably grab a second box to finish everything. It’s easy to install with just scissors and something to press it down, and making quick cardboard templates really helps for tight spots. The adhesive is insanely strong, so once it sticks, it’s not going anywhere (just don’t let it stick to itself). Keep in mind this is sound deadening, not full soundproofing, but even with partial coverage I can already hear a difference in reduced road noise and vibrations. I’m using this as a base layer and plan to add soundproofing on top, and so far I’m really happy with how it’s turning out.

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Reviewed in the United States on January 22, 2026

Verified Purchase

Dorthy Shortz

New York, US

★★★★★ 5

It's a job but totally worth it

Size: 36 sqft

Pack a lunch when you tackle this project boys.. its a doozy!! Month in going great so far definetly did what I purchased it to do. 2000 chevy with two p3 10s every bass drop sounded like an old firebird with loose trunk bolts. Threw this on the back walls floor underneath the speaker and the doors.. all that energy is now in the cab with me instead of getting lost in rattling metal!! Love it!!! Left a few pieces outside after I was done rained like hell on them so water doesnt hurt this stuff at all or direct sunlight in south mississippi.. good stuff pick this up and make them systems thud instead of rattle!!! You wont regret it!! I didn't!!

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Reviewed in the United States on June 11, 2026

Verified Purchase

Roseanna Boyce

Birmingham, US

★★★★★ 5

Delivers a quieter ride

Size: 36 sqft

This works very well to put down road noise. The difference was immediate in my van. I was shocked it made such a difference.

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Reviewed in the United States on June 6, 2026

Verified Purchase

Louisville, US

★★★★★ 4

Reasonably priced sound deadening

Size: 18 sqft

Easy to cut with a carpet knife. I used a heatgun to make it stickier and more moldable. The foil isn't so thick that you risk cutting yourself like some Dynamat variants.

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Reviewed in the United States on March 12, 2026