Compatible with Specific Models of Polaris Snowmobiles, Runs at Optimal RPMs, No Clutch Recalibration, Replace Every 1,000 Miles, Black Designed & Tested by Polaris – With 20,000 miles of field testing and 18+ months of development, Polaris OEM Parts are proven to run cooler and at optimal RPMs to ensure maximum vehicle performance and ultimate durability. Built For Snowy Terrains – Polaris Snow Belts are designed to maximize your sled’s performance and give you better acceleration, higher top speeds, less speed ratio, and energy loss whether you are in extreme snowy conditions or on groomed trails. Sturdy & Reliable – Polaris belts are engineered to run at the optimal RPM and deliver unmatched performance, making this the perfect snowmobile accessory. Developed and tested for all environments & conditions. Easy Installation – Install your new Polaris Drive Belt effortlessly in just three easy steps. Step 1: Use tools to align the clutches. Step 2: Remove the old drive belt. Step 3: Replace with a new drive belt. Field tested to ensure a perfect fit. Compatibility & Replacement – See below chart for compatibility and year with Polaris SUPER SOFT, SPORT, TRIUMPH, TRAIL, WIDETRAK, XLT TOURING, 500, 550 & 600 Models. The suggested replacement period is every 6 months, 50 hours or 1,000 miles.