160 crankshaft moped crankshaft connecting rod assembly 139QMB 16T 22T This crankshaft assembly is designed for use with 139QMB engines. It includes a crankshaft and connecting rod built to fit moped engine configurations requiring a 16T or 22T sprocket setup. The unit is engineered for direct replacement in compatible small engine applications. Components are constructed to maintain functional alignment and rotational integrity within the engine system. This assembly supports standard performance requirements for moped propulsion systems utilizing this crankshaft design. Disclaimer: This is a compatible third-party part. Brand/model citations are solely for compatibility guidance.