SnowTracker - Auto-Sharpening Semi-Aggressive Wear Bar (20761) Options:20761 sealed unit alarm module is

sealed unit alarm module is weather-proof against water

The visor has been designed to direct air into the ports for enhanced airflow

the Subverter is a KPA lightweight helmet with the most aggressive design

Additionally

Internal Lithium-Polymer self-charging backup battery

SnowTracker - Auto-Sharpening Semi-Aggressive Wear Bar (20761) Options:20761 sealed unit alarm module isDo you want to improve control? Here is how to eliminate darting, zigzagging on icy & snow covered trails. Install the snowtracker semi aggressive kit, with self sharpening carbide runners, with the corrector and rediscover the confidence in any conditions, in trails, icy and snow covered, specially in grooves that were left by other snowmobiles. You will have no more darting or zigzagging.