YZ4 alloy pulley part numbers?
 

Hi guys, no doubt it's been on here before but can anyone tell me what I need to convert my YZ4 standard pulleys to the alloy ones?
I've looked on MB Models site & not sure tbh? Does the actual pulleys come with the flanges or does each pulley need 2 flanges? Confused, lol. I don't have the rear narrow belt conversion either? Is there a alloy pulley for the thicker belt?
A list of part numbers would be great.

Thanks

There is no aluminium pulley for the wide rear belt that I know of. Both the narrow rear belt and the front belt use the same pulley, though. For the front you would need 1x Z4-630A and 2x Z4-630F3, everything for the rear should be included in the conversion kit Z4-309C. If you are not in a hurry, I'd wait for a while to see wether the larger pulleys used by Ryan Maifield and probably others at the Reedy Race will be released for the current car or if TY decides to save them for the next version. Larger pulleys will make the drive train smoother.

Pulleys
 

Thanks for that Mes, that makes sense, I'll just get the front one for now as the kit one on mine has failed, got no brakes even with it tightened up.

Thanks again

You're welcome!