Optional spur gear for 3-Pad Slipper Clutch. Precision-molded slipper clutch spur gear 78T 48P consists of XRAY's exclusive key mix of composite product, enabling these devices become robust sufficient to take care of high-performance brushless machines. The spur gear is built to obviously have the best priced feasible fat while remaining strong and light. Each gear has a stamped enamel amount for simple recognition.