The original 1974 Corvette's Rear Bumpers were constructed using 2 pieces of urethane attached together in the middle. This allowed for easy adjustments from the factory. This Fiberglass 1 Piece Rear Bumper replicates the look of the originals. It features a groove down the middle to look as though it was made using two separate pieces. The benefits of replacing your stock urethane bumper with a fiberglass unit are many. Fiberglass will not shrink, will not warp, and will not crack due to time and exposure to the elements like urethane. This fiberglass Bumper also accepts paint the same as the remainder of your Corvette's body panels so color variations found with urethane bumpers is not a factor.
Learn more from the following Mid America Motorworks Knowledge Library article:
Corvette Body Components from Fiberglass to Resin Transfer Molding