GY6 High Performance Racing CDI Box For 50cc To 150cc Chinese Scooters Go Karts ATVs And Mopeds Fits 139QMB 152QMI 157QMJ Engines Two And Four Pin Connectors AC Fired No Rev Limit Easy Install Durable Alloy Build

High-Performance Racing CDI Box for 50-150cc Chinese Scooters
✔️ 2/4-pin AC-fired, no rev limit; easy install; single unit

Upgrade-ready CDI module designed for common 50cc-150cc Chinese-made scooters, go-karts, ATVs, buggies, dirt bikes, and mopeds. It matches 139QMB, 152QMI, and 157QMJ engine families with a 2+4 pin connector and AC-fired configuration to remove the rev limiter for faster acceleration.

✅ Fits 2+4 pin connector, AC-fired, no rev limit
✅ Durable alloy housing for heat and vibration resistance
✅ Easy plug-and-play installation for quick swaps
✅ Includes 1x 6-pin AC CDI module box

💡 What is a CDI box and why upgrade it on a 50-150cc scooter?

Upgrading can sharpen ignition timing and extend RPM range for better daily driving or sport riding.

- Better throttle response and quicker acceleration
- Higher RPM capability for stronger top-end speed
- Simple swap with common 2+4 pin connectors
- Fits 139QMB, 152QMI, 157QMJ engine families