Product Description:

• CDI is 3" long 1/2" wide
• Cable is 5" long
• Blue Racing AC CDI for GY6 50cc - 125cc Engines
• 5 pin
• CDI eliminates rev-limit that keeps your engine restricted and resets the ignition advance curve for better acceleration
• Can add up to 5-10% more Horse Power 
• Fits most GY6 Chinese 4 stroke 50- 125cc scooters, ATV's, dirt bikes, mopeds, go-karts, and 4 wheelers
• May not work with 139QMA-A Engines