Do I need to sand and prep this before painting?

Yes. Sand the surface with appropriate grit to scuff the finish, then clean thoroughly before applying your chosen base coat and clear. This ensures proper paint adhesion and finish quality.

Will this fit with my factory rear bumper and undertray?

These diffusers are designed to integrate with factory mounting points. Before installation, verify that your existing undertray and bumper assembly have clearance for the diffuser profile. Minor trimming of the undertray may be necessary depending on your specific setup.

What installation hardware is required?

Confirm the bolt pattern and fastener size by comparing the diffuser mounting tabs to your factory rear bumper attachment points. Standard automotive hardware (bolts and washers) from your local supplier will secure the assembly. Refer to your vehicle's service manual for fastener torque specifications.