Optional spur gear for 3-Pad Slipper Clutch. Precision-molded slipper clutch spur gear 78T 48P is made of XRAY's exclusive key combination of composite item, enabling these devices become robust sufficient to take care of high-performance brushless engines. The spur gear is built to obviously have the lowest priced feasible fat while staying strong and light. Each gear has a stamped enamel volume for easy recognition.