This Ski-Doo SLP Rail Extension kit is a must-have for anyone looking to improve the performance of their snowmobile. The kit is designed to fit the Sc10/Sc10II models with track lengths of 136-144/144-151/151-159, and is manufactured by SLP, a trusted brand in the powersports industry. The kit includes rail extensions and hardware for easy installation, allowing riders to enhance their sled's performance on the trails.