Check the listing for details. Synchrotech - Carbon Master Kit 89-91 (Y1/S1). Condition: New. Listed at 629.95 USD. Honda Acura 89-91 Cable B Series Master Rebuild KitFitting: Sticker ID (Y1 or S1) Included: 1-5 Pro-Series Carbon Lined Synchros, 1-5 synchro springs, 1-5 slider sleeves, 4 shaft bearings, 2 axle seals, input seal, shift rod seal, and a new dust boot. Note: Y1/S1 3/4/5 synchros are the same size with 50mm ID. If you have larger 54mm synchros on 3/4 with 50mm on 5th you will need MK-SYN105 kit for the Y2/A1/J1 If you have questions about proper application please contact us for assistance. International Buyers – Please Note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying