Polaris 2884198 - Replacement MPN: 2884198 If you want to unleash the full potential of your snowmobile, equip your track with studs designed for ultimate control and stopping power, with your specific sled and track in mind. With this kit, you'll be able to easily install studs on your track and dominate your terrain. Studs, backer plates, nuts, track drill, track marker and template. Sled Model/Track: Rush XCR / Cobra, Track Length: 121, Lug Height: 1.352", Pitch: 2.52, Stud Quantity: 96 Fits Polaris: 2017-2019 Rush 600 XCR, 2017-2018 Rush 800 XCR, 2019 Rush 850 XCR Polaris 121" Cobra Track Stud Kit # 2884198