The Renesis (not sure about others) uses a multi rib belt. Vortech also
sell multi rib belts for the SS. I am not sure I understand the
difference between a v belt, multi rib belt and a serpentine belt.

Bobby
Bobby, What you call a multi-rib others call a serpentine belt. The reference comes from the fact that the rib belts can be turned in both directions so one belt can snake through all the pulleys. It's the same part.
Bill