1. Ignition coil + CDI unit + regulator, especially suitable for PIT Quad Dirt Bike ATV 90cc 110cc 125cc engine.2. The regulator converts alternating current to direct current, the ignition coil converts low voltage power to high voltage power.3. CDI can accelerate the secondary voltage rise, the ignition spark is more stable, so the ignition timing does not deviate.4. Direct replacement of the old or defective ignition kit via plug-and-play ensures better ignition performance.5. Made of high quality PVC and aluminum alloy, wear-resistant and corrosion-resistant, durable for long-term use.Specification: Item Type: Ignition Coil + CDI Unit + Voltage Regulator Material: PVC + Ans Plastic + Aluminum Alloy Color: Black Fit: Fit for PIT Quad Dirt Bike ATV 90cc 110cc 125cc Package List: 1 x ignition coil1 x CDI unit1 x voltage regulator