GREHUA Ignition Coil & CDI Kit for 50–125cc ATVs — 4-Piece Replacement (Horizontal 4-Stroke)

This GREHUA kit bundles the key ignition and charging components you need to restore spark, starting and charging on small four-stroke engines commonly found on TaoTao, Coolster, Kazuma, Baja and similar mini ATVs and pit bikes. Designed for horizontal engines from 50cc up to 125cc, the set replaces worn or damaged CDI boxes, coils, regulator/rectifiers and starter relays to get your vehicle back on the trail without modification.

Will this ignition kit fit my TaoTao, Coolster or other Chinese ATV?

The kit was engineered to be compatible with a broad range of 50cc–125cc Chinese-made 4-stroke horizontal engines. It supports many specific models from Taotao, Coolster, Kazuma, Baja and other brands listed in the compatibility notes, but does not fit GY6 or CG engines.

• Fits many TaoTao models (ATA-110, ATA-125 series) and Coolster 110/125 variants.
• Also compatible with SSR, Lifan, Kazuma Falcon 90, Baja 90 and similar pit bikes.
• Not suitable for vehicles using GY6 or CG engine platforms.

What parts are included and how do they restore your vehicle?

This GREHUA package provides the essential electrical parts that address ignition, starting and charging failures. Replacing a faulty component from this set often resolves no-start conditions, weak spark or charging issues caused by burned coils, failed CDI boxes or bad rectifiers.

• 1pc 5-pin AC CDI box to control timing and spark delivery.
• 1pc starter solenoid relay to restore reliable starting engagement.
• 1pc ignition coil with lead for consistent high-voltage spark output.
• 1pc 4-pin voltage regulator/rectifier to stabilize charging output; plus 2 A7TC fuses.

How difficult is installation and what tools are needed?

GREHUA designed the components for straightforward swap-in replacement so most users can complete installation with basic hand tools. No drilling or major modifications are required; connectors match common 4-stroke ATV wiring harnesses used on compatible models.

• Simple plug-and-play connectors for CDI, coil and regulator connections.
• Standard tools (screwdrivers, pliers, socket set) recommended for removal and mounting.
• Typical install time: 15–45 minutes depending on access and model layout.

What performance or reliability benefits can I expect?

Using fresh ignition and charging components can return consistent spark timing, dependable starts and stable battery/lighting voltage during operation. This reduces misfires, starting delays and undercharging that lead to electrical failures.

• Improved spark consistency from the new ignition coil and CDI.
• Reliable starter engagement with the included solenoid relay.
• Stable charging and protected electrical circuits via the regulator/rectifier and fuses.

Who this kit is for: riders, DIY mechanics and small-vehicle repair shops who own or service TaoTao, Coolster and a wide range of Chinese 50cc–125cc ATVs, go-karts, mini quads and pit bikes. It's best suited when ignition faults, starting failures or charging problems point to worn electrical modules—this set gives you a comprehensive replacement to diagnose and repair the core systems quickly without hunting for separate parts.