Five Star Race Car Bodies Rear Bumper Covers feature a high impact plastic construction, delivering superior flexibility and the ability to maintain structural integrity. Even with the typical short track beating and banging, you can expect your five star bumper covers to hold up the entire season, saving you money and keeping you on the track. Rear bumper covers do not require painting as they are shipped with a smooth finish, but will exhibit great paint adhesion characteristics with paired with Five Star's plastic primer.