Gear Shift Fork Models 2000, 2100, 2110, 2310, 2600, 2610, 2810, 2910, 3000, 3100, 3110, 3310, 3430, 3600, 3610, 3900, 3910, 3930, 4000, 4100, 4110, 4130, 4410, 4600, 4610, 4630, 4830, 5000, 5030, 5100, 5200, 550, 555