These decisions can be influenced by factors such as market demand, production costs, evolving regulations, the introduction of newer models, or strategic decisions within the company. Discontinuing a particular model does not necessarily imply that there were significant issues with that specific model, but rather it reflects the manufacturer's decision to focus on other products or make changes to their lineup.
If Triumph indeed discontinued the Tiger 800XRX, it would be best to consult official Triumph sources, motorcycle news outlets, or contact a Triumph dealer for the most accurate and up-to-date information on the specific reasons behind that decision.