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Is your chainsaw chain slipping or not spinning at all? Is your chainsaw lacking in performance? Your sprocket could be the cause. Sprockets suffer natural wear and tear depending on how often your use your chainsaw. If the sprockets teeth are worn down or broken, it’s time to replace it. Jack's carries a selection of Pioneer spur sprockets, rim sprockets, sprocket parts, and much more. Check out our Pioneer sprockets and sprocket parts below!