B-Max4 Spur/Pinion + ESC/Motor + Battery + Runtime + Heat

[hardrider]

I've been running my Bmax with the following with no problems on my track.
Tekin RS Pro esc
Tekin Redline 8.5 motor 87/18
Tekin Redline 6.5 motor 87/16

Temp was as follows after about 8mins of runtime:
Esc: About 65 deg C
Motor: About 70 deg C
Batteries: About 40 deg C

I started with the 6.5 but eventually ran the 8.5 because the power was a little too wild for my liking.

It looks like your ratios are a little on the hot side.
You might want to check on your pinion/spur mesh as well. The covered gearbox may sometimes make meshing hard to inspect.

Hope this helps.