Does this product have enough flex to hold up on plastic wheel well flares without cracking?
All plastics vary, and the current condition of your parts comes into play here. In general, the plastic may need some adhesion promoter such as Bull Dog, but light scuffing might suffice. Also, if you plan to really be flexing these parts more than they encounter in normal use, we might suggest a custom quote to provide part of your kit in a more flexible version. Our standard kits provide enough flex to stick on painted metal and other semi-rigid surfaces, but could be compromised if bent far enough.