Which wormgear ( speedometer ) do I need for the VNB6T with 10" wheels pls

This is for techtip sip; can you pls advise which wormgear do I need for the VNB6 with 10" wheels; there are currently 4 or 5 that seem to be OK: green, blue, black, red, white etc. Can you advise which one or what is the method to chose the right one to ensure it works properly and measures the correct speed. THANKS

hi ...


i think that you need the red one with 8 teeth Art Nr. 9446000