GOOFIT
CDI Box 5-Pin AC for 50cc - 125cc 4-Stroke Horizontal Engines ATV & Pit Bike
CDI Box 5-Pin AC for 50cc - 125cc 4-Stroke Horizontal Engines ATV & Pit Bike
5.0 / 5.0
(2) 2 total reviews
Couldn't load pickup availability
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.
Share

Fitment FAQ
Will this part fit my specific model and year?
This CDI ignition module is intended for 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 physical/spec details from the product data include GOOFIT High-Performance 5-Pin AC CDI – Horizontal Engine Series, This 5-pin unit is a direct replacement for 4-stroke horizontal engines (50cc–125cc) found in, Connector Type: 5-Pin single plug.. Use the compatibility table and product photos together before ordering.
Do I need to match the OEM part number?
Yes. If your original part has a stamped OEM or manufacturer number, match that number first before ordering. For this CDI ignition module, also compare the AC/DC ignition type, plug count, pin layout, limiter type, stator pickup compatibility, and mounting space. This is especially important for Roketa/TaoTao/SSR models because similar model names can use different parts by year or trim.
What models or situations does this part not fit?
Do not order this CDI ignition module for machines outside the listed compatibility, or for units with different AC/DC ignition systems, pin layouts, plug counts, or pickup-signal requirements. Do not rely only on the model name or engine size.
What should I check before ordering?
Before ordering, compare your original part with the photos and check the AC/DC ignition type, plug count, pin layout, limiter type, stator pickup compatibility, and mounting space. Recheck listed specs such as GOOFIT High-Performance 5-Pin AC CDI – Horizontal Engine Series, This 5-pin unit is a direct replacement for 4-stroke horizontal engines (50cc–125cc) found in, Connector Type: 5-Pin single plug.. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.
Perfect fit,durable,and didnt break my pockets.works like it should.
Put it on my sons 110 cc quad definitely fill a power boost