Brent Replacement Belts
4 groove (model B, C, New CXC) ABBBC (22039X)
4 groove (model A) - # ABAB (22038W)
6 groove (old CXC)
Note from Brent "6 groove flex for B, C, CXC EX, #16 post 2006
(When replacing drive belt, any wheel with 8 groove, small and large
pulley should be replaced with 6 groove belt.)"