Stihl MS271 or MS291 owners, listen up! If your chainsaw's sprocket is worn out or the clutch drum is damaged, this complete replacement kit is exactly what you need. It includes a spur sprocket (that's the kind without a rim, it's all one piece) and a clutch drum, all matched up and ready to install. It's designed for .325 pitch chains and has 7 teeth (7T). Made from durable aluminum, it's a direct fit for your saw. The brand is automober, and they back it with a solid 3-year warranty. Replacing a worn sprocket is crucial – a bad sprocket can ruin your chain, reduce cutting power, and even be dangerous. This kit makes the repair easy and affordable compared to buying parts separately. If your chain isn't turning smoothly, or you see excessive wear on the drive links, it's probably time for this. Perfect for DIYers, farmers, or landscapers who maintain their own equipment. Get your saw cutting like new again with this quality replacement kit. Remember to always disconnect the spark plug before working on your chainsaw!