What Size Belt

[icehoc8]

I have an 02 Lightning with a 6lb lower and 2lb upper. I bought both pullies from rpmoutlet when they were new to the market. I am looking at rpmoutlet GenII Aux idler pulley with a second idler on the factory bracket. Both pullies would be 100mm.

Link to Aux Idler Kit: Click

What size belt would I need to run? Thanks

 

[runs2rch]

Im pretty sure 68.5 is what u would need.

 

[Silver04L]

check the how-to section