Product Description
Today's powerful subwoofers cause a vehicle's trunk to flex and vibrate, which creates bass distortion, a reduction in maximum bass output, and poor sound quality. Some people may find trunk rattles cool, but it is actually just bad bass. If you really want to impress, install the Dynamat Xtreme Trunk Kit and show how you can pump clean, clear, crisp bass without the rattle.
When it comes to playing loud bass in a vehicle, it is all about Sound Pressure Level (SPL). Low SPL results when your subwoofer causes vibration and movement of your vehicle's body panels. Installing the Dynamat Xtreme Trunk Kit will convert that vibration and noise into silent energy, which results in higher SPL. Tests have shown that installing the Dynamat Xtreme Trunk Kit is like adding an extra amp. The Trunk Kit is not just for coupes and sedans. Use it to treat the back walls and side panels of trucks, and the rear cargo area of small hatchbacks and SUVs. With the Dynamat Xtreme Trunk Kit, you get the tightest, loudest bass your subwoofer can produce.
For best results when installing, be sure to use a Dynamat Roller, and hear the Dynamat difference.
This box contains 1 Dynamat Xtreme Trunk pack.
- Sheet Quantity - 5
- Sheet Size - 457mm x 812mm (18" x 32")
- Total Kit Coverage - 1.85 square metres (20 square foot)
Shipping & Returns
UK Mainland Delivery
We aim to dispatch all UK Mainland orders on the same or next working day. Delivery typically takes 1–2 working days, depending on the time your order is placed.
For special order items, we aim to dispatch within 4–5 working days. These items are clearly marked as “Special Order” within the product description.
Delivery Charges & Minimum Order
All prices shown on this page are exclusive of VAT.
We do not have a minimum order value; however, our minimum delivery charge includes packaging and handling costs and cannot be reduced.
Tracked Courier OptionsUK Mainland: £13.00 + VAT (TNT / FedEx / Transglobal Express) Some items qualify for Free Delivery where margin allows.
Economy Regions: Highlands & Islands of Scotland, Scilly Isles, Isle of Wight, and Northern Ireland.
Please add items to your basket and proceed to checkout for an exact delivery quote.
Channel Islands: Jersey, Guernsey, and the Isle of Man are treated as separate countries in our delivery system, ensuring zero VAT for the Channel Isles.
Courier Partners
We currently use DPD, DHL, TNT/FedEx, UPS and Transglobal Express for all UK and European shipments.
International orders are generally sent via DHL or DHL Express. Please contact us for a shipping quote — once approved, we’ll enable the relevant delivery option so you can complete your order online.
European Deliveries
We offer Economy and Express options from as little as £10 per 30kg.
To receive an accurate quote, please email us with your full delivery address and local contact number.
Customs & Import Duties
Customs duties and handling fees may be applied by local authorities in your country — these are outside our control. Please familiarise yourself with any applicable import charges before placing your order.
Some couriers may charge a small fee to handle customs clearance on your behalf. We cannot provide prices inclusive of duties or taxes, and the customer remains responsible for any local charges.
Please do not request that we under-declare or alter invoice values for customs paperwork — this is unlawful and may invalidate your shipment in the event of a claim.
Important Information
Once your parcel has been dispatched, it is in the hands of the courier. While most deliveries arrive promptly, transit times are estimates and not guaranteed due to factors such as road delays or courier backlogs.
All deliveries are tracked and require a signature on receipt, so please ensure someone is available at your chosen delivery address.










