Does this require modification to the factory bumper?

These diffusers are designed to integrate with your OEM rear bumper using factory-mounted attachment points. Verify your bumper condition and bolt holes before installation — any damage or missing fasteners will need addressing first.

What should I do before painting?

Sand and prep the surface thoroughly to ensure paint adhesion. The FRP is delivered ready for your chosen paint system — verify compatibility with your selected primer and topcoat before application.

Will these fit if my rear bumper has been replaced or modified?

These diffusers are engineered around OEM bumper mounting points and gaps. If your bumper has been replaced with an aftermarket unit, confirm the mounting holes and geometry match the original layout before purchasing.