While there are several Yamaha showrooms in Siliguri, the Yamaha X-Max is not listed among the available models in these showrooms. The popular models available in Siliguri include the Yamaha MT 15 V2, Yamaha R15 V4, Yamaha Aerox 155, and others, but the X-Max, which is typically sold in European markets, is not mentioned. Therefore, it is unlikely that you can buy a Yamaha X-Max from Siliguri.