This Associated factory replacement center CVA driveshaft bone measures 56mm and is designed for the forward differential position on the RC10B84 platform. The metal construction features the standard CVA-style captured pin ends that connect to your CVA cups and allow smooth articulation under power. Keeping a spare on hand is good practice for competitive drivers who push their drivetrain hard. Features: 56mm center CVA bone for FWD differential position CVA-style captured pin ends for smooth drivetrain articulation Metal construction Direct factory replacement for RC10B84 platform 7/7/26 cs