Have not talked to Banning about this for a long while but the old research for using a Chain and Sprockets states that there are none and likely will never be any for this raise came block, unless someone does a lot of research into building one. Talked to a couple of racers that have the belts and have no problem with them. Was told that Oil is a killer of the belts. These belt assemblies are not cheap but do add some benifits to the motors.