CA Cycleworks - ExcatFit Timing Belt for Ducati 821, 848, 939, 1098, 1198, 1200, Bimota (each)CA Cycleworks ExactFit Timing Belt for Ducati 1000 and 1100 2V Engines, ST3, Bimota (each) is available to buy in increments of 2. Replaces OE 737. 4021. 1A Use "n Track Tuner" from your phone's app store to check belt tension frequency. Fitment Ducati 1000 2V engines Ducati 1100 2V engines Ducati Hypermotard 1100 Ducati Monster 1000 Ducati Monster 1100 Ducati Monster S2R1000 Ducati Multistrada 1000 Ducati Multistrada 1100 Ducati SportClassic GT1000