This is a CRC Foam Bumper, intended for use with the Gen-X 10 pan car and Battle Axe oval car. This bumper has been Pre-formed to match the shape and holes of your Gen-X 10 or Battle Axe Graphite bumper. This foam bumper will slide down over your body posts, no matter which holes you are using! It will also help keep those nice paint jobs in good shape for many more race days with the added protection of this firm & lightweight foam bumper!