* The following parts must be purchased in order to install the aluminum gear sets for your 1/5 scale vehicle. 51C00-054096, 51C00-050111, 51C00-050112, 51C00-050113, 51C00-050114, 51C00-050115, 51C00-50070, 51C00-50077, 51C00-50081, 51C00-50099, and either one of these gear sets (51C00-054097, 51C00-054110, 51C00-054111). Some parts listed above may be re-used. For example the bearing set, washer, and nuts.