ProXL Generation 20 Ultrafil Microfibre 900ml – High-Build, Ultra-Smooth Polyester Spray Filler

he ProXL Generation 20 Ultrafil Microfibre 900ml is a premium high-build polyester spray filler designed to deliver exceptional filling power, outstanding adhesion, and an ultra-smooth surface finish. Engineered with advanced microfibre technology, this formula bridges imperfections with ease—making it ideal for rapid repair work, deep filling, and preparing panels for primer or topcoat.

Ultrafil lays down with superb consistency, reducing the need for excessive sanding while offering excellent vertical hold and minimal shrinkage. Whether you’re repairing dents, smoothing uneven substrates, or restoring aged panels, this product provides a strong, stable, and perfectly level foundation ready for further refinishing.

Suitable for use on a wide range of automotive substrates—including bare metal, fibreglass, existing coatings, and most plastics—Ultrafil is a reliable choice for bodyshops seeking efficiency and professional results with every application.

Key Features:

• Microfibre-enhanced formula for superior filling capability

• High-build performance ideal for deeper imperfections

• Excellent adhesion to metal, fibreglass, plastics, and previously painted surfaces

• Ultra-smooth finish requiring minimal sanding

• Low shrinkage for long-term stability

• Fast drying, improving workflow and turnaround time

• 900ml format, perfect for both small repairs and larger bodyshop projects

Achieve a flawlessly prepared surface with ProXL Generation 20 Ultrafil Microfibre—the professional solution for fast, clean, and reliable body repair results.