I am installing my KB tomorrow, temporarily I am using my 4 LB pulley with the 3.5" Upper - anyone run this combo and know what length belt I will need? Worst case I will go buy several belts in different lengths to be on the safe side and return the ones that do not fit.

Thanks in advance for any help.

 

Should be a 68" or so. I use a 68.5" with a 6# lower and it works with a 3" to 3.5" upper.

Jody