Battery warm, ESC warm and motor hotter?

So I had a read of the good guide about if your components are getting hot and what it means.

My ESC is just warm, battery is just warm but my motor after a full race with the 8T is a little hot, not burning, but hot.

Using MMM/2200KV and Hyperion 4S 6500mah.

Running gearing 15/48.

Am I likely a little undergeared?