Bubble level and oil plug for easier installation and adjustment with increased accuracyEngine-specific gearing for 300 cc and largerFast, easy swap from wheels to tracks and back againImproved locking tensioner increase strength, adjustment accuracy and serviceabilityInterchangeable with over 99% of SxS brands and modelsNew solid steel frame design with improved geometry adds durability in non-snow terrain and improves weight distributionNot recommended for use over 40 km/h (25 mph)Puncture-proof tiresRubber dampers with improved frame suspension minimize vibration, increase ride comfort, stability and overall durabilityThis 4S1 undercarriage track kit includes 4 tracksAdapter kit required for mounting to your vehicle.