High Performance Racing CDI Box For GY6 Engines No Rev Limit 50cc To 150cc Chinese Scooters Mopeds Go Karts ATVs 139QMB 152QMI 157QMJ Ready For Racing With Two And Four Pin Connector Alloy Body Adjustable Ignition Curve
✔️ Single-pack alloy body, AC fired, 2+4 pin connector
High performance racing CDI box designed for GY6 engines used in Chinese scooters, mopeds, go karts, and ATVs. It supports engine families like 139QMB, 152QMI, and 157QMJ, offering an alloy body, a 2+4 pin connector setup, and an adjustable ignition curve to boost acceleration. Typical AC CDI sizes are 58x33x22 mm (2.3x1.3x0.87 in) or 65x36x22 mm (2.6x1.4x0.87 in), while DC CDI units run larger at about 75x42x24 mm (3.0x1.7x0.94 in) and 96x55x24 mm (3.8x2.2x0.94 in).
✅ AC-fired CDI with no rev limit for top-end punch
✅ Alloy body for solid durability and heat handling
✅ 2+4 pin connectors for flexible wiring setup
✅ Adjustable ignition curve to tune timing and power output
💡 What is a racing CDI box for GY6 engines and how does it work on scooters and ATVs?
This handy ignition module helps tune timing for better takeoff.
- handy for improving throttle response and acceleration on GY6 platforms
- no rev limit lets you push the RPM range in a safe, controlled way
- requires the correct firing type and matching connector arrangement
- compatible with 139QMB 152QMI 157QMJ and related GY6 engines