The Lightweight Advanced B3121 distributed by Braille is a Sealed AGM motorcycle and small engine battery.
The B3121 battery comes with a 24 Mo. free replacement manufacturer warranty. It has 550 cold cranking amps (CCA) and its rated capacity is 31 amp hours (AH). This is a 12V battery. Some of the competing brands for this part number include: ETX30L,UIX30L,MBTX30U,B3121,YIX30L,PC925L.
The original equipment (OE) battery found in many power sport vehicles that most closely relates to this one is the Yuasa YIX30L.