Belt Drive Limited BDL-142 142T x 1-1/2" Wide Primary Drive BeltBDL 142 Tooth 8mm Pitch 1 1 2" Wide Primary Belt Fitment Note: Replacement belt for 923 650. Replacement belt for 923 650 Kevlar belts are thermal chemical and wear resistant for longer life Kevlar is used for added performance in various racing competitions around the world Over the years many other uses have become common such as reinforcement in rubber goods for mechanical applications Kevlar enhances the compound's mechanical performance