These Innovative Mounts Axles are specifically designed to be used in cars with engine swaps and built by Insane Shafts, so you do not need to worry about the axles being too long or the axles being too short. They have been specifically designed for use with Innovative mount kits. These axles have been re-sized to the proper length to ensure an OEM fit. These Innovative Mounts Axles are designed to support up to 500hp, and are an upgrade over stock axles. There is no core fee, and each axle set comes with both the left and the right axle, for a complete set.