Product Description: Premium Engine Crankshaft for 47cc 49cc Mini Pocket Bikes High-Quality Construction: This crankshaft is constructed from premium quality materials, ensuring durability and long-lasting performance. Built to withstand the demands of high-speed operation, it offers reliable service life for your vehicle. Enhanced Engine Efficiency: Engineered to play a crucial role in the working efficiency of your engine, this crankshaft optimizes performance. It ensures smooth and efficient power delivery, enhancing the overall functionality of your mini pocket bike. Precision Specifications: Designed with precise measurements, this crankshaft uses a wrist pin with a diameter of 10mm (0.3 inches) and a wrist bearing with a diameter of 12mm (0.4 inches). These specifications guarantee a perfect fit and optimal performance. Ideal Replacement Part: Serving as an ideal replacement for your broken or worn-out original car crankshaft, this component restores your engine's performance. It integrates seamlessly into your engine system, providing the reliability you need. Standard Auto Part Fitment: This crankshaft is a standard auto part specifically designed to fit 47cc and 49cc mini pocket bikes. Its compatibility ensures easy installation and immediate improvement in engine performance. Upgrade your mini pocket bike with this high-quality engine crankshaft. Its robust construction, precise design, and compatibility make it an essential component for maintaining the peak performance of your 47cc or 49cc bike.