GOOFIT
5-Pin AC CDI Box for Chinese 50cc–125cc ATV Pit Bike Dirt Bike
5-Pin AC CDI Box for Chinese 50cc–125cc ATV Pit Bike Dirt Bike
4.82 / 5.0
(33) 33 total reviews
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Product Overview
Restore stable ignition performance with this 5-pin AC CDI box, designed for many Chinese 50cc, 70cc, 90cc, 110cc, and 125cc horizontal engine ATVs, pit bikes, dirt bikes, mini bikes, and pocket bikes.
The CDI unit controls ignition timing and spark output, helping the engine start more reliably and run more smoothly when the original CDI is weak, damaged, or failing. It is a practical replacement for common ignition-related problems such as no spark, hard starting, intermittent shutdown, rough running, or poor throttle response.
Built with a weather-resistant housing, this CDI box is designed to handle normal vibration, dust, and moisture exposure found in off-road riding conditions. The 5-pin AC design makes it suitable for compatible Chinese horizontal engine ignition systems used on brands and models such as SSR, TaoTao, X15, X18, 3125B, 3125R, and 3125XR8.
Product Compatibility
| Vehicle / Engine Type | Engine Size | Fitment Notes |
|---|---|---|
| Chinese ATV | 50cc–125cc | Must use 5-pin AC CDI |
| Pit Bike | 50cc–125cc | For horizontal engine applications |
| Dirt Bike | 50cc–125cc | Check plug shape and pin layout |
| Mini Bike | 50cc–125cc | Compare original CDI before purchase |
| Pocket Bike | 50cc–125cc | Compatible with select AC ignition systems |
Common Compatible Models / Brands
| Brand / Model | Notes |
|---|---|
| SSR | Select 50cc–125cc horizontal engine models |
| TaoTao | Select ATV, pit bike, and dirt bike applications |
| X15 / X18 | Compatible with select Chinese pit bike setups |
| 3125B / 3125R / 3125XR8 | Fits select 125cc horizontal engine models |
| Chinese Horizontal Engine Vehicles | 50cc, 70cc, 90cc, 110cc, 125cc AC ignition systems |
Specifications
| Specification | Details |
|---|---|
| Product Type | CDI Box / Ignition Control Unit |
| CDI Type | AC CDI |
| Pin Count | 5 Pin |
| Engine Compatibility | 50cc, 70cc, 90cc, 110cc, 125cc |
| Engine Style | Horizontal Engine |
| Vehicle Applications | ATV, Pit Bike, Dirt Bike, Mini Bike, Pocket Bike |
| Housing | Weather-Resistant Protective Housing |
| Protection | Dust, Moisture & Vibration Resistant |
| Installation Type | Direct Replacement, fitment confirmation required |
| Condition | Brand New |
Key Features
5-Pin AC CDI Replacement
Designed for compatible Chinese horizontal engine ignition systems using a 5-pin AC CDI configuration.
Fits 50cc–125cc Horizontal Engines
Works with many 50cc, 70cc, 90cc, 110cc, and 125cc Chinese ATVs, pit bikes, dirt bikes, mini bikes, and pocket bikes.
Supports Stable Ignition Output
Helps control ignition timing and spark signal for smoother starting, more stable running, and improved throttle response.
Weather-Resistant Housing
Made with protective materials to help resist dust, moisture, and vibration during normal off-road and recreational riding.
Practical Fix for Ignition Problems
A useful replacement part when diagnosing no-spark issues, hard starting, rough idle, intermittent stalling, or weak ignition performance.
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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; Popular Models: TaoTao 3125B, 3125R, 3125XR8, X15, X18, and SSR series.; Vehicle Types: ATVs, Quads, Pit Bikes, Mini Pocket Bikes, and Dirt Bikes.; Engine Range: 50cc, 70cc, 90cc, 110cc, and 125cc Chinese-manufactured engines.; 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 – Precision Ignition Module, 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 TaoTao/SSR X15/X18 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 – Precision Ignition Module, 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.
Bought these for my go kart and dirt bikes works ok
Perfect fit! Old CDI Box would kill four wheeler when hitting bumps. Checked for electrical shorts but there was was none. Dialed it to the 5 pin CDI box. Replaced CDI box four wheeler stopped dieing randomly over bumps.
Worked great on my SSR 125
Great price, works just like it should. Plug and play
The ATV is repaired.