5 Pin AC CDI Box For ATVs Go Karts And Dirt Bikes Fits 50cc 70cc 90cc 110cc 125cc 4 Stroke Engines Easy Plug And Play Installation Replaces Spark Timing Controller Ideal For Quad Bikes Pit Bikes Dirt Bikes

Compact 5-pin AC CDI Box for ATVs and Dirt Bikes
✔️ 1x 5-pin AC CDI; 2x ties; plug‑and‑play, 50cc-300cc 4-stroke engines

This 5-pin AC CDI box is a compact ignition timing controller designed for small 4-stroke engines used in ATVs, go-karts, dirt bikes, and pit bikes. It replaces the spark timing module with a simple plug-and-play install, compatible with many popular makes.

✅ 5-pin AC-fired CDI module for reliable spark timing
✅ Fits 50cc-300cc 4-stroke engines on ATVs, dirt bikes, and go-karts
✅ Plug-and-play installation, no wiring diagram required
✅ Includes 1x CDI box and 2x ties for mounting

💡 What is a CDI box used for in small engines?

Handy explanation:

• Spark timing control for 4-stroke engines across RPM range
• Improves throttle response and idle stability in off-road vehicles
• Easy replacement for worn spark timing controllers with a plug-and-play swap
• Rugged, sealed electronics designed for dirt and dust exposure