KMG YTX20-BS Battery For Harley-Davidson 1000 XL Series (Sportster) 1979-1985 Sealed Maintenance Free 12V Battery High Performance OEM Replacement Powersport Motorcycle ATV Snowmobile Watercraft Battery Family: High Performance, AGM Sealed Maintenance Free (SMF) Voltage: 12 Volts Polarity: [ + ]--------[ - ] Brand: KMG | Battery Type Number: YTX20-BS Dimensions: 6 7/8" x 3 7/16" x 6 1/8" (175mm x 87mm x 155mm)