That's the battery that Indian,along with a bunch of other motorcycle companies,use in their bikes.The last three machines I owned all used that same number battery.But believe me ,it's not made by Polaris or Honda,or Yamaha,or who ever,as there are only several battery manufacturers in the business,whether they be for a car,truck,boat,lawn tractor,etc.Anyways,this same battery can be bought almost any wheres other then from an Indian dealership for less money, but with a different name stamped on it.And the YTX20 number, is infact,the same battery used in many applications,and what you're looking for as a replacement.And ya don't want anything less then the 310 CCA [cold cranking amps] marked on the batteries casing.So if ya shop around,you'll discover that this same number battery [minus the Polaris,Honda,Harley or whoevers name is stamped on it] can be bought else
wheres,and usually for a lot less money.Shop around and you'll see what I mean.