70cc 2-stroke Big Bore Kit JOG 40QMB E40QMB 1E40QMB - Wrist Pin 12mm
70cc 2-stroke Big Bore Kit for JOG 40QMB / E40QMB / 1E40QMB Scooters
Elevate your scooter's power with this 70cc Hoca Big Bore Kit, a premium upgrade engineered for Minarelli 40QMB, E40QMB, 1E40QMB, and 1PE40QMB 2-stroke engines, transforming your 50cc platform into a high-performance machine.
- 47mm Bore Diameter for increased engine displacement and significant power gains.
- 12mm Wrist Pin ensures a robust and reliable connection for the piston assembly.
- Complete Head Kit designed for optimal combustion and heat dissipation.
- Designed for 2-Stroke Engines, maximizing efficiency and power delivery.
- Compatible with JOG Yamaha Parts and similar Minarelli engine platforms.
Compared to standard 50cc kits, this 70cc big bore upgrade offers a substantial increase in torque and top-end speed, providing a more exhilarating riding experience. It's an ideal choice for riders seeking performance enhancements beyond stock specifications, aligning with high-performance aftermarket tuning trends.
Key Technical Advantages: Technology and Performance
This Hoca 70cc Big Bore Kit leverages advanced cylinder design and precise manufacturing to deliver superior performance. The larger bore, combined with the optimized combustion chamber in the included head, creates a potent package that enhances acceleration and overall power output, making it a standout upgrade for enthusiasts seeking noticeable improvements.


