The XT8 is an outdated kit which XRAY does not sell anymore and therefore of course it is more difficult to find spare parts. The availability of the spare parts for current cars in the portfolio is second to none.
As XRAY are high competition racing cars only they are of course not available in all the regular hobby stores which are primarly focused on RTR cars but the availability in the racing oriented shops is very good in most countries. We just work on update of the dealer map:
xdealers-map.php to list all the actual shops who carry XRAY.
If you contact our distributor they will be happy to let you know which of the nearest local hobby shops carry XRAY and also the FX engines you are looking for.
It is difficult to argue on the comment that some shops do not carry parts because of frequently changing parts, more frequently I hear that there is so many brands in every cleass in the market htat it is impossible for shops to stock them all, which is true. In the high competition racing almost all serious brands update their cars on annual basis, same as XRAY. Sometimes the amount of changes is smaller, sometimes the changes are more extensive but generally most of the XRAY platforms hold for several years. As Martin just mentioned in his Exclusive Making of story here:
http://www.redrc.net/2015/04/exclusive- ... ray-nt115/"So as a designer you not only have to know how to skate on thin ice, but also to be a master of customers minds; you need to figure out the perfect balance between what is not enough news and what is too much news, and also find the perfect balance between continuing with the current product and when to bring out an all-new product. And in the end you need to accept that whatever you do, it will be still be impossible to make everyone 100% happy. Not an easy task, right?"