Optional spur gear for 3-Pad Slipper Clutch. Precision-molded slipper clutch spur gear 78T 48P is made from XRAY's exclusive key combination of composite product, enabling the device become robust enough to take care of high-performance brushless engines. The spur gear is made to really have the cheapest feasible fat while staying strong and light. Each gear has a stamped enamel quantity for simple recognition.