CDI Module (Ignitor) for 50cc, 90cc, 110cc, 125cc, & 150cc Go-Karts

Here is our selection of "rev limiter" capacitor discharge ignition modules for 50cc, 70cc, 90cc, 110cc, & 150cc go-karts with 4-Stroke GY6/QMB139 or Chinese made Honda-style engines. These may also be called CDI modules or ignitors, and they are perfect replacement items on go-karts made by Baja Motorsports, Coolster, Hammerhead, and Yerf-Dog.

Monster Scooter Parts gives you a choice of connector styles to match those used on your go-kart. Different manufacturers have used different connector styles, even though they are otherwise the same thing. We have these CDI modules available with a 5-pin square connector, a 6-pin square connector, and a 6-pin rounded connector. All three of these CDI modules are equipped with a "rev limiter", which limits the speed (RPMs) of the engine.

Please study the photographs, and then select the connector version that matches your old unit.

Note: 4-stroke and 2-stroke engines require different engine timing. Though they may appear visually similar, a CDI module from a 4-stroke engine cannot be interchanged with a CDI module from a 2-stroke engine. The three CDI modules on this page are for use on 4-stroke engines only.

⚠ WARNING California Residents: Proposition 65 Warning

CDI Type: AC
Engine Size: 50cc, 70cc, 90cc, 110cc, 150cc
Engine Type: 4-stroke
Length: 6.5 cm
Width: 3.8 cm
Depth: 2.2 cm
Number of Pins: 5
Plug Shape: Square

6 Pin Square:
CDI Type: AC
Engine Size: 50cc, 70cc, 90cc, 110cc
Engine Type: 4-stroke
Length: 6.5 cm
Width: 3.8 cm
Depth: 2.2 cm
Number of Pins: 6
Pin Configuration: 4 + 2
Plug Shape: Square

6 Pin Round:
CDI Type: AC
Engine Size: 50cc, 90cc, 125cc, 150cc
Engine Type: 4-stroke
Length: 6.5 cm
Width: 3.8 cm
Depth: 2.2 cm
Number of Pins: 6
Pin Configuration: 4 + 2
Plug Shape: Rounded