You wont find nor buy a Yuasa battery from walmart,,,online or dealer only,,,,But I bought a walmrt battery for the Mrs v-twin there tho,,and you can find a knock off after market battery for the busa,,,I too looked for one,,but as coop stated above,,most are a hint taller and the seat will hit,,it about 3/4-1 inch taller and it bottoms out the foam on the seat,,and you really gotta push down hard on the seat to get the bolts started,,I bought and returned on [same day]didnt even hook up the terminals,,,,sounded like a train wreck waiting to happen,,,I called the dealer and he said alot of after markets were like that ,,and offered me the factory yuasa for 20 bucks cheaper than what they sold them for,,paid about 80 bucks....One thing that bothered me was I knew My weight was gonna be pushing down on that battery too,,,I just didnt like the thought of it,,,but to each his own,,plus I weigh 200,,,,,Another thing I would like to share with the org memebers is,,when choosing a battery,,the weight of the battery means alot[ mod batterys are different] factory replacements is what im talking about only,,,,,,,,,the more lead in the battery the better it is and the longer the life expectancy,,,,The factory Yuasa weighs{ memmory] is 9,2 pounds,,,when your on line and your looking for replacements,,they always have the batterys weight,,,You will find,,the cheaper the battery,,the lighter it is,,,Ive seen them at 8,4lb 7.1lb ect,or call your dealer to confirm,,even the battery marts are good and ive had good luck with their batteries even walmart batteries,,,and of course ,,if you get a new one that you have to fill and charge [ my personal choice] like the Yuasa,,,slow,,very slow chrage= long life battery..