Yes, you can purchase spare YT parts on our Parts & Accessories page. If the part you want isn't listed, drop an email to service-usa@yt-industries.com with your bike year and model, and we'll check availability.
Yes, you can purchase the DECOY X online in the US on the YT store. If the size or model you want is out of stock, check back regularly or sign up for stock notifications on the product page.
US Customer Care is live, with a dedicated North American team on hand to help with product information, support and warranty – if you need help, get in touch at  service-usa@yt-industries.com.