the down side with the avaliable alu diff pulleys are that there only six ball holes may by due to not neaded when drifting i dont know but anyway tamiya
is it the 414 or what ever tamiya maybe the 04 any way they have more holes and they have small delrin insert for the balls and are 32 teeth.
Also if one would like to really dig on the internet Robinson Racing used to make an alu diff pulley for the HPI belt cars BITD RS4 or what ever they are called but they are very rare have just seen one on the bay.
mvh Isobarik
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