Install evidence

Hothead source wording says: Product Description Sound Assassin is our premium Sound Deadening & Thermal Insulation material , specifically designed to reduce road noise and heat inside your Jeep Wrangler JL 4-Door. Match the floor/strip package coverage and decide whether this is being added to a headliner kit for heat, noise, or both.

Hothead Headliners installation libraryOfficial Hothead install hub. Use it to confirm the latest instructions for the exact Jeep body, top, and product family.Hothead cold-weather installation instructionsOfficial adhesive/cold-weather install support from Hothead.

Hothead Sound Assassin full floor package installation videoOfficial Hothead YouTube install/support video matched by product family. Confirm exact Jeep body/top before purchase.Hothead Sound Assassin hard top package installation videoOfficial Hothead YouTube install/support video matched by product family. Confirm exact Jeep body/top before purchase.Hothead Sound Assassin mat installation videoOfficial Hothead YouTube install/support video matched by product family. Confirm exact Jeep body/top before purchase.

Sound AssassinNeeds vehicle setup checkProduct image available

Hothead Headliners

2018-2026 Jeep Wrangler JL (4 Door) | Sound Assassin Full Floor Kit

Vendor fitment: 2018-2026 JL Wrangler. Sound Assassin fitment from the vendor source. Confirm final options and fitment on the vendor page before purchase.

Product Description Sound Assassin is our premium Sound Deadening & Thermal Insulation material , specifically designed to reduce road noise and heat inside your Jeep Wrangler JL 4-Door. It's an excellent addition to any Jeep build, enhancing ride comfort in all climates. With 30+ years of experience in automotive upholstery, we've tested countless materials - and butyl-based sound deadening has consistently proven to be the most effective and easy to install. Sound Assassin Demonstration [Video] How Effective is Sound Assassin for Sound Deadening? This video demonstrates how well our Sound Assassin products deaden the vibration in a large area with only a small strip.

SKU

SA-JL4-FFP-HDR

Price

$279

Role

review candidate

Verified variant selector

Variant coverage

2 source rows

Price range

From $279 to $296.95

Source captured

2026-05-13

Add Heavy Duty Roller

Available at sourceVariant ID 42938272612418

SA-JL4-FFP-HDR

Add Heavy Duty Roller - $17.95

$296.95

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Question

How hard is this to install?

For 2018-2026 Jeep Wrangler JL (4 Door) | Sound Assassin Full Floor Kit, use Hothead's official install guide or video for this product family before purchase. Hothead source wording says: Product Description Sound Assassin is our premium Sound Deadening & Thermal Insulation material , specifically designed to reduce road noise and heat inside your Jeep Wrangler JL 4-Door. Match the floor/strip package coverage and decide whether this is being added to a headliner kit for heat, noise, or both. Confirm final options and fitment on the Hothead page before purchase.

Sources

- Hothead product-type guidance plus source wording: Product Description Sound Assassin is our premium Sound Deadening & Thermal Insulation material , specifically designed to reduce road noise and heat inside your Jeep Wrangler JL 4-Door

- Hothead official install page or video evidence is attached where product-specific PDF evidence is not available.

- Hothead product page: https://hotheadheadliners.com/products/jeep-wrangler-jl-4-door-sound-assassin-full-floor-kit

- Vendor catalog fitment summary: Vendor fitment: 2018-2026 JL Wrangler. Sound Assassin fitment from the vendor source. Confirm final options and fitment on the vendor page before purchase.

- Hothead local source capture: 2026-05-13.

Fitment and build notes

Vendor catalog record promoted for browsing. Final fitment, install dependencies, and shopper selection still require review before checkout.

A source-backed fitment match is enough to shortlist the part. Before purchase, still confirm the exact vehicle setup, variant, install parts, and whether the customer is buying for DIY install or a shop quote.

Readiness

Fitment statusUseful for a shortlist, but exact vehicle setup, dependencies, or purchase path still need review.Needs vehicle setup check

Product imageProduct image available

Purchase pathUse for build planning or a shop quote

Visual prioritymedium

Source-backed facts

Fact summary

Models: JL Wrangler; Years: 2018-2026; Source: shopify_products_json; Captured: 2026-05-13