Originally posted by purplepro3
does anyone know the part# of the HPI purple pulley (the one next to the spur gear and drives the rear)??? where is it available??? thanks.
I think you mean the Spur gear adapter?
Check the pic
I think its #72429 - HPI - Alum. Spur Gear Hub Set, PRO 3
It is a GREAT hop up, makes spur changes easy and you wont strip the thread like on the plastic part. Note that it uses the original plastic pully.
You should be able to get it at the usual stores in Hong Kong like control centre or rcmodel.