RadiusCX is the next evolution in stall-preventing auto clutch technology for Harley-Davidson Sportster models. This top of the line product brings together the latest innovations in one package- the EXP auto clutch disk, billet aluminum Core components, and TorqDrive friction disk technology. The auto functionality provides perfect power delivery every time. Power transfer is increased over OEM. Core components deliver improved oil flow over wide temperature ranges. TorqDrive friction disks provide longer clutch life with less adjustment over time.