CDI Box Unit: Maximize Your Vehicle's Performance with Enhanced Ignition Control Enhance your vehicle's ignition system with our high-performance CDI Box Unit. Designed to deliver exceptional durability and functionality, this ignition module is the key to improved throttle response and increased top speed. OE Number: This CDI box unit is compatible with OE part numbers 5KM 85540 10 00, 5KM 85540 00 00, 5KM855401000, and 5KM855400000. Confirm these numbers match your requirements to ensure compatibility and a perfect fit for your vehicle. Fitment: Specifically crafted as a replacement for the ATV YFM660 (2002-2003), Grizzly 660cc, and YFM 660 R Raptor (2002-2003). Verify fitment with your model to ensure seamless integration and optimal performance. Durable: Built to meet OEM specifications, this CDI ignition box features a durable housing and protective sleeve that shield it from harsh conditions, vibration, wear, and moisture. This robust design ensures a long service life and reliable performance. Easy Installation: The installation process is straightforward and does not require special tools or professional assistance. This CDI box can be installed independently in a short amount of time, making it convenient for both professionals and DIY enthusiasts. Increase Maximum Speed: This high-performance CDI box is engineered to enhance throttle response speed, enable faster ignition starts, increase spark energy, and raise the speed limit value. Experience the benefits of a plug-in module that maximizes your vehicle's potential. Choose our CDI Box Unit to elevate your vehicle's ignition performance and driving experience. Order now to enjoy improved acceleration, increased speed, and a dependable ignition system that keeps your vehicle running at its best.