12T Freewheel sprocket

12T Freewheel drive sprocket This is a Service Replacement part for our discontinued 4G model 1C T-Belt transmission only.  Please do not order for any other purpose.   If you are a registered owner of a Gru-Bee 4G-1C transmission or a Gru-Bee CVT pls. notify us as we have a few set aside for those customers only.  DISCRIPTION: 10mm dia. center hole with 3mm keyway.  Use with 415 and 1/2-3/8" bicycle chain  Limited supply.   Sold only to registered owners of 4G 1C transmissions and GruBee 79cc CVT.    When gone no more 12T FW sprockets will be available.  Soak in Oil before installation.