We have a couple standard size battery boxes available for Triumph and Harley batteries that sell for around $85 + shipping. The one pictured here is for a Triumph but it also works well for Yamaha XS650's. We can also build custom size battery boxes but the price might be a little higher depending on size. These are just simple mild steel boxes with clean high quality welds. I don't really find it necessary to get all crazy with billet aluminum and laser cut designs on a battery box.