Upgrade your 1989-1991 Cable Y2/A1/J1 transmission with the Synchrotech Carbon Master Kit. Improve shifting and clutch response with 1-5 carbon synchros, 1-5 slider sleeves, 4 shaft bearings, 2 axle seals, input seal, shift rod seal and new dust boot for a 54mm ID 3-4 synchro. Get the best performance out of your transmission with Synchrotech.