Do these extensions require trimming or modification of the factory rear bumper cover?

No. The AR-D diffusers are designed for clean bolt-on installation using factory attachment points. Verify your vehicle's OEM fastener locations before assembly to ensure proper panel alignment.

Can I paint these pieces with my existing primer and paint setup?

Yes. The raw FRP surface is designed to accept standard automotive primers and topcoats. Sand and prep the surface following your paint supplier's recommendations before applying primer and color.

Will these extensions interfere with towing or trailer hitch clearance?

The diffuser extensions are mounted low on the bumper line. Measure the vertical and horizontal distance from the hitch mount point on your vehicle to ensure adequate clearance with the installed extensions before final fastening.