Description
Stinger RKXDK Roadkill Expert Door Kit 6 Sheets 12 Square Feet Ultra-Dense Butyl and Aluminium Sound Deadener
The RKXDK from Stinger is a Roadkill Expert door kit containing six sheets with a total coverage of 12 square feet. Built from a proprietary ultra-dense butyl blend with an aluminium top layer, it is sized specifically to treat the door panels of a four-door vehicle, mass-loading the door metal to reduce vibration, improve speaker bass response, and lower road noise. The material is odourless, non-toxic, and self-adhesive.
Product overview
Roadkill Expert is Stinger's core vibration damping material, designed for application directly to metal panels throughout the vehicle. The RKXDK door kit provides six sheets each measuring 12 inches by 24 inches, giving 12 square feet of total coverage suited to treating all four doors of a standard passenger vehicle. The proprietary ultra-dense butyl blend absorbs acoustic energy at the panel surface, while the aluminium top layer assists with heat dissipation and provides a finished surface compatible with further acoustic treatment if required.
Applied to door panels, the material mass-loads the thin metal to reduce the vibration that degrades speaker performance at higher volumes. The improvement applies to both factory and aftermarket speakers installed in the treated doors. For floor, firewall, or boot treatments, additional Roadkill Expert kits or the RKX36B bulk pack can be used alongside the RKXDK to extend coverage across the full vehicle.
Installation requires no specialist tools. Clean the surface with wax and grease remover or methylated spirits, cut each sheet to the required shape, peel the self-adhesive backing, press into place, and roll flat with a Roadkill roller. The RKINSTALL roller and knife kit is recommended for best results.
Features and benefits
Ultra-dense butyl blend with aluminium top layer: The proprietary butyl blend absorbs acoustic energy at the panel surface to reduce vibration and road noise, while the 6 mil aluminium top layer assists with heat dissipation and provides a finished damped surface suited for further acoustic treatment.
Door-focused coverage quantity: Six sheets at 12 inches by 24 inches each provide 12 square feet of coverage, sized to treat all four doors of a standard passenger vehicle in a single kit purchase.
Improved speaker bass response and output: Mass-loading door panels reduces thin metal vibration that degrades speaker performance at higher volumes, resulting in a more solid mounting surface for better bass response and improved overall speaker output across both factory and aftermarket speakers.
Road noise reduction: The damping material reduces vibration-induced road noise entering the cabin through the door panels, contributing to a quieter overall cabin environment and reduced driver fatigue.
Thermal insulation: Rated from -62°C to 149°C, the material reduces heat and cold transfer through vehicle panels, providing a secondary benefit of improved cabin temperature regulation across all treated surfaces.
Odourless and non-toxic: Contains no harmful or odorous compounds, making it safe for use in enclosed vehicle cabins without the unpleasant smell found in cheaper sound damping products.
Self-adhesive installation: The self-adhesive backing allows the material to be pressed directly onto the cleaned panel surface without requiring separate adhesive. Each sheet can be cut to shape with a knife before application.
What's in the box
- 6x Roadkill Expert sheets (12" x 24" each, 12 sq ft total)
Technical specs
| Specification |
Detail |
| SKU |
RKXDK |
| Brand |
Stinger |
| Coverage |
12 sq ft total (6x sheets, 12" x 24" each) |
| Minimum Thickness |
0.080 in (approximately 2mm) |
| Aluminium Layer Thickness |
6 mil |
| Damping Weight |
0.65 lbs/ft² |
| Peel Adhesion Strength |
40.89 lb/in after 24 hours |
| Application Temperature |
-62°C to 149°C (-80°F to 300°F) |
| Adhesive |
Self-adhesive backing |
| Odour |
Odourless |
| Toxicity |
Non-toxic |
Frequently asked questions
How many doors will the RKXDK cover?
The six sheets in the RKXDK provide 12 square feet of coverage, which is sized to treat all four doors of a standard passenger vehicle. Coverage per door will vary depending on the door size and how much of each door panel is treated. Contact us if you need guidance on coverage for your specific vehicle.
What is the difference between the RKXDK and the RKX4?
Both are Roadkill Expert kits with identical material specifications and the same sheet size of 12 inches by 24 inches. The RKX4 contains two sheets for 4 square feet of targeted coverage, while the RKXDK contains six sheets for 12 square feet, sized specifically for a four-door vehicle door treatment. For larger full-vehicle coverage, the RKX36B bulk kit provides 36 square feet across nine larger sheets.
What surfaces can the RKXDK be applied to?
The RKXDK is designed for cold rolled steel, galvanized steel, e-coated, and clear coated metal panels. While the kit is sized for door panel treatment, the material is equally suited for floor areas, firewalls, roofs, and boot floors.
Do I need any special tools to install the RKXDK?
No specialist tools are required. A wax and grease remover or methylated spirits for surface preparation, a knife for cutting to shape, and a roller for pressing the material flat are all that is needed. The Stinger RKINSTALL roller and knife kit is recommended for best installation results.
Is the RKXDK safe to use inside a vehicle cabin?
Yes. The RKXDK is odourless and non-toxic, making it safe for use in enclosed vehicle cabins. Unlike some cheaper sound damping materials, it does not emit unpleasant or harmful odours after installation.
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