CDI Box 5-Pin AC for 50cc - 125cc 4-Stroke Horizontal Engines ATV & Pit Bike

GOOFIT High-Performance 5-Pin AC CDI – Horizontal Engine Series

Unlock the snap and reliability of your engine. The GOOFIT 5-Pin AC CDI Box is a premium ignition module engineered for AC-fired 4-stroke horizontal engines. Whether you’re maintaining a TaoTao youth ATV or tuning an SSR pit bike, this CDI provides the precise spark energy required for fast acceleration and smooth idling.

Built using a high-pressure skeleton structure and a vacuum-infused epoxy resin process, this unit is designed to survive the intense heat and vibration of off-road riding. By optimizing the discharge of high-voltage electricity through the ignition coil, this CDI ensures a more complete fuel burn, which improves power output and fuel efficiency.

Product Compatibility

This 5-pin unit is a direct replacement for 4-stroke horizontal engines (50cc–125cc) found in:

• Vehicle Types: ATVs, Quads, Dirt Bikes, Pit Bikes, and Go Karts.
• Engine Range: 50cc, 70cc, 90cc, 110cc, and 125cc Chinese-manufactured engines.
• Common Brands: TaoTao, Buyang, Coolsport, Kazuma, Sunl, Roketa, SSR, and more.
• System Type: Designed exclusively for AC (Alternating Current) ignition systems.

Key Technical Specifications:

• Connector Type: 5-Pin single plug.
• Dimensions: 65mm x 39mm x 23mm (2.55" x 1.53" x 0.9").
• Manufacturing: High-temperature epoxy resin vacuum infusion.
• Protection: Waterproof and vibration-resistant skeleton structure.

Why Choose the GOOFIT 5-Pin AC Ignition?

• Superior Low & High Speed Performance: Engineered to provide a strong, stable spark across the entire power band, preventing engine "stutter" at high RPMs and ensuring easy starting at low speeds.
• Optimized Fuel Economy: By strengthening the spark intensity, this CDI maximizes combustion efficiency, helping your engine produce more power while using less fuel.
• High-Temperature Resistance: The specialized vacuum-infused resin prevents internal electrical leaks and protects sensitive components from the extreme heat found near the engine block.
• Rugged Off-Road Build: The heavy-duty internal skeleton is specifically designed to handle the shocks and impacts of trail riding, ensuring a much longer service life than standard OEM replacements.