Specifically designed for the 1200 & 600 E-TEC high altitude models, this kit ensures your ride stays fearless on any terrain. With components like spring cover ass'y, rollers ass'y, slider shoes, and more, every essential is included to keep your Ski-Doo performing at its peak. Trust the Ski-Doo Maintenance Kit to maintain your drive pulley with uncompromising quality, so you can ride with absolute confidence wherever your snowmobile adventures take you. Keep your TRA Primary CVT Pulley performing at its best with this complete wear-component replacement kit. It includes all essential parts: 1 spring cover, 3 rollers, 1 sliding sheave.s bushing and it's retaining ring, 6 slider shoes, 6 O-rings, 3 cotter pins & 3 lever axles.