RDR Performance Clutch Drum for GY6

RDR Performance Clutch Drum with vented and friction enhanced inner surface for 150cc and 125cc 4-stroke GY6 engine based scooters, ATVs and off-road karts. Also fits Navi 110!Please see our Warranty & Returns Policy. Number of Splines: 19 Overall Inner Diameter: 125mm Overall Outer Diameter: 137mm Splined Inner Diameter (peak to peak): 13.5mm Splined Inner Diameter (valley to valley): 15mm