Replacement 2004 Yamaha YZF-R1 1000CC Factory Activated, Maintenance Free, Motorcycle Battery - 12V, 8.6Ah, UB-YTZ10S-BS Replacement Battery for 2004 Yamaha YZF-R1 1000CC 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: 8.6Ah UpStart Battery Brand. On Sale for a Limited Time!