Replacement 1988 Honda TRX300 Fourtrax 300 CC Factory Activated, Maintenance Free, ATV Battery - 12V, 12AH, UB-YTX14-BS Replacement Battery for 1988 Honda TRX300 Fourtrax 300 CC Factory Activated, Maintenance Free, Sealed Lead Acid Battery Ready to install. No need to add acid. Leak free, sealed design prevents corrosion. One Year Warranty, Voltage: 12V, Capacity: 12AH UpStart Battery Brand. On Sale for a Limited Time!