[Johnny Danger]

There are many myths surrounding polyurethane vs. FRP . Under ideal conditions, poly would be a better choice. Provided, however, that the part has been manufactured to fit perfectly . Otherwise, you'll be SOL. Because unlike composites, poly cannot be manipulated in a way that material can be added and subtracted in order to get an perfect fit . And, I can assure you that there are plenty of aftermarket bumpers out there that are made out of poly that fit like ******************** . On the other hand, some of the higher quality aftermarket FRP parts (I'm mostly referring to TUV certified parts) can have reasonably good fit right "out of the box" . However, with any body kit or add on part , it requires a skilled and knowledgeable auto body person in order to get an excellent end result . In any case, if you're determined to go with only polyurethane, I would strongly suggest that you source an oem bumper, or do some serious research before buying any aftermarket
brand .