Polini Maxi-Speed Clutch for the Polaris RZR 170 CVT is a direct replacement for the stock clutch that already comes with it. The Maxi-Speed clutch is an upgrade to the original clutch and is made to be for racers and people who cruise around! The clutch is made up of lightweight reinforced clutch blocks and reinforced shoes. This provides extended life for the clutch and much better performance. The clutch is designed to provide excellent traction while allowing for a smooth engage. It also comes fully adjustable with small screws that allow you to tailor the clutch to your liking. Being able to dial in your transmission easily is key to optimum performance. The CVT can now be adjusted exactly how you would want it! Do yourself a favor and upgrade to a high-performance clutch for better performance, quality and ride!