These are FIRST robotics CIM motors. Specs are as follows.
-This is one big honkin' motor
-2.6in diameter
-4.3in long
-8mm output shaft
-443kv.
Can be ran as high as 6s without modding, these motors are used to sling around 160lb robots and stay cool- they are torque monsters.
Planetary Reduction box-
-16:1 reduction ratio
-All cnc machined
-Hardened steel 32p/mod /8 gears
-Has 1/4-20 mounting holes
-1/2in output shaft
-Direct bolt on to one cim motor
-Retails for more then one benjamin.
Pm me with for prices, or any questions you might have :)