fiberglass is poor mans looks for a car, cheap quality, looks like sh*t, and if u lean on it wrong or anything u will get spider cracks or crack it entirely!, fiberglass sucks, i had fibeglass fenders, and full kit, b4 i realized this sh*t wasnt cool, them went with oem sides and rear lips and frotn lip, oem sides and rear are made out of abs, but a much more sturdy and durable abs then all these aftermarket abs copycats, and the front lip is polyurethane, polyurethane can bend which is good, fiberglass wont bend it will just snap =D