This Stage 1 clutch kit features just what it takes for tuning your Ranger 1000 primary clutch. This kit includes our magnetic adjustable Goldstar clutch weights and custom primary spring. These weights offer a superior profile for big acceleration. They are very easily adjustable with snap in snap out magnets. Our custom primary spring improves clutch back shift and helps hold peak RPM without as much fade as the factory spring. Goes well with the Roller Upgrade to reduce friction in your upshift and backshift.