This is the optional Front Belt 510 for use with the Hot Bodies Cyclone series.FEATURES: Slightly longer front belt for use with Cyclone touring car 18-tooth center pulleys Fits all Hot Bodies Cyclone touring carsINCLUDES: Front Belt 510 for use with the Hot Bodies Cyclone seriesREQUIRES: 66491 Center OneWay Pulley 18T 66492 Center Pulley 18T, HBSC6648SPECS: Number of Teeth: 170 Width: 0.11" (2.9mm)Hot BodiesPart HBS66493