Will this lip scrape at normal driving angles?

Ground clearance depends on your suspension setup and how low you sit. Measure the distance from your current bumper lip to the pavement, then account for the added extension of this piece. If you're running lowered suspension, test-fit at a shallow driveway angle before final installation.

Does FRP flex or stay rigid?

FRP is a rigid material—it will not flex or move once mounted. This means a solid, clean line without any wavering, but also that impact damage cannot be absorbed. Protect it the way you would any factory bumper extension.

What fasteners do I need to install this?

The lip mounts to factory bumper holes using hardware that matches your OEM attachment points. Verify your vehicle's fastener size and type by checking the existing bumper bolts, then source stainless or plated hardware rated for exterior use to avoid corrosion.