Black Urethane Spray-On Truck Bed Liner Kit - 4 Quart Kit

In this review the Custom Shop 4 quart black urethane bed liner kit is examined for DIYers who want a durable, near-factory finish without hiring a pro. The bottom line: this kit stands out for its straightforward "add hardener - shake - spray" workflow and the included Custom Coat spray gun with regulator, which together make achieving a consistent textured finish realistic for a competent home mechanic. For those prioritizing abrasion resistance and sound deadening, this kit delivers strong immediate results with a professional look.

Key Features

• Easy application: The add hardener, shake and spray process simplifies mixing so a single person can prepare and apply the coating without complex equipment.
• Custom Coat spray gun: The included spray gun has an adjustable nozzle and a regulator with gauge, which helps control spray pattern and pressure for cleaner application.
• Abrasion and stain resistance: The urethane formula resists scuffs and stains from cargo, helping the bed liner maintain a uniform appearance under normal use.
• Corrosion protection: The coating forms a waterproof barrier that protects against rust, corrosion, salt and damp conditions common in outdoor use.
• Sound and vibration dampening: The flexible urethane helps deaden road noise and vibrations, improving ride comfort when hauling loads.

Who It's For

This kit is aimed at truck owners comfortable with a DIY project who want a professional-looking, textured bed liner without contracting a spray shop. It suits owners who carry mixed cargo such as lumber, tools or gear and want added protection against abrasion and moisture.

It may be less suitable for someone who needs a lifetime factory warranty or for users who will subject the bed to extreme repeated flexing over many years; some users report cracking or peeling after long-term heavy abuse. Professional installers or buyers wanting guaranteed long-term commercial warranties should consider shop-installed options.

Pros & Cons

Pros

• Included spray gun with regulator improves sprayability and control for DIY users.
• Easy mixing and application process reduces setup time and complexity.
• Provides abrasion, stain and corrosion resistance plus waterproofing benefits.
• Flexible urethane helps reduce noise and vibrations from cargo.

Cons

• Some customers report cracking or peeling over extended heavy use, so longevity can vary by application and prep.
• Achieving a perfect factory-like finish requires careful prep and technique; inexperienced users may see uneven texture or overspray without practice.

Specifications

Product type	Spray-on truck bed liner kit
Kit volume	4 quarts
Coating base	Black urethane
Included tool	Custom Coat bedliner spray gun with regulator and gauge
Application method	Mix hardener, shake, spray
Key benefits	Abrasion and stain resistant; waterproof and flexible
Protection	Guards against rust, corrosion, salt and damp

Our Verdict

The 4 quart black urethane kit is a strong value for DIY truck owners who want a durable, textured bed liner and appreciate the convenience of an included adjustable spray gun. With proper surface prep and careful spraying the kit produces a near-factory look, offers abrasion and moisture protection, and improves noise control, making it a sensible choice for most consumer truck applications.

Frequently Asked Questions

How difficult is application?
With careful prep the add hardener, shake and spray workflow is straightforward for a competent DIYer; the included regulator helps control spray quality.

Will it prevent rust?
The waterproof urethane barrier protects against moisture, salt and damp conditions, which helps guard the bed from rust and corrosion when properly applied.

How long does it last?
Many users report good durability for carrying typical cargo, but some report cracking or peeling over long-term heavy use, so longevity depends on prep and usage conditions.