Cracked because of the heat of the sun AND the engine. If your bodykit is white, it will look damn ugly because it will turn yellowish and when see from near, those "yellow veins" can be seen easily. At this stage, the bodykit will become like kueh-ka-pek liao. Not to mention fiberglass is carcinogenic.

If you're not changing bodykits every single month, I suggest you take other alternatives suggested by others such as aluminium and if you can afford it: Carbon fiber.

Machine. I've mentioned earlier, fiberglass is carcinogenic.

carcinogenic= cancer causing agent.