This is the Tamiya Super Stock BZ Brushed 540 Motor [53930].

This is a high torque motor designed for R/C off road cars
Equipped with brush damper that enables firm contact with commutator
Features terminal heat sink and chip type condenser
Sponge cover protects from dust and debris
Motor can with side and front slits allows effective heat dissipation
End bell features colored anodized aluminium finish
Can be disassembled to replace brushes (standard type)
Use within 9:1~11:1 gear ratio

Motor data
Type: Brushed
Timing: Fixed
Maintenance: Rebuildable
Turns: 23
Normal voltage: 7,2 - 8,4 V
Torque: 500 g/cm at best efficiency and 7,2V
RPM: 26500 rpm at no load / 7,2V