The best all-around use kit; if you do a bit of everything with an ATV/UTV this is the kit for you. Great for trail riding, occasional mud and sand riding, plowing and hauling. Makes up for power loss and slow response of adding oversized tires. Designed to improve low- and mid-range acceleration. Helps decrease belt slippage, which will decrease clutch heat. Each kit will enhance back shifting and throttle response. Field tested to assure satisfaction. Designed for stock motor and exhaust. Designed to give the best overall performance to those who spend most of their time on the trails.