512908021 is a high quality battery from VARTA. The cold cranking current of the battery is 320 A. The dimensions of the product are 175 x 87 x 154 mm. You should use the dimensions of your old battery as a guide for your selection. Durable AGM technology for your motorcycle The 512908021 has a capacity of 12 Ah. The higher the value, the more electrical charge can be stored in the battery. AGM batteries like the 512908021 are suitable for motorcycles with high energy requirements. They have a long cyclic life. The technology of this battery covers the starting requirements of motorcycles. You should consider this when buying Before you buy, check that the circuit and polarity of your new battery are identical to the values of the old model. The circuit shows whether the positive pole is on the right or left of the battery. To determine this, position the battery so that the poles are facing you. With the 512908021, the circuit is 1, so the positive pole is on the left.