Rear Differential Bearings & Seals Kit 1988-2000 for Honda Fourtrax 300 TRX300 2X4 TRX300FW 300FW 4X4. Honda 1988-2000 TRX300 FourTrax 300 2x4. Honda 1988-2000 TRX300FW FourTrax 300 4x4. This Rear Differential Bearings & Seals Kit fits the following models.