Always the correct part
This is a set of Kyosho Updated Hard Rear Hub Carriers, and are intended for use with the Kyosho MP9 1/8 buggy. These are the updated Rear Hub Carriers that have been molded from Kyosho's Hard composite blend and have added plastic at the hinge pin holes for increased durability and lifespan. This set also includes the spacers used for changing the wheelbase settings on the car.
Because the amount of flex in plastics change due to changes in ambient temperature, the hard compound plastics may become brittle when used in ambient temperatures below 60°. It is recommended that the stock plastics be used in cold conditions and the "hard" compound plastics used in warmer climates.