The RM2 is a high powered motor that fits in the same form factor as used by the GM2/GM3 & GM8/GM9 style gear motors.
When retrofitted (an easy process after removing the GM2/GM3/GM8/GM9 motor strap). It nearly triples the output speed & doubles the torque! Be forewarned - the increase in power come with a sizeable increase in power consumption! When used in a GM2/3/8/9, the power output is considerably higher.
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