Synchrotech Carbon Synchro Sleeve Set 1-5 GSR ITR B16 (92-01)

Synchrotech's Carbon Synchro Sleeve Set 1-5 GSR,ITR,B16 is designed to fit perfectly in Y80 S80 S4C S21 Y21 (B16A/B16B/B18C) transmissions for superior shifting performance. The set includes 1-5 Carbon Synchros, 1-5 synchro springs, a brass reverse synchro and spring, and 1-5 Slider Sleeves - everything you need to enhance your transmission.