Ultimax Snowmobile Belt- 138-5120U4

Ultimax is known for making reliable snowmobile drive belts, and their PRO series is built for machines that need a little more out of their drivetrain. This 138-5120U4 belt is designed to give mid-horsepower snowmobiles better performance and longer life.

What makes this belt work so well is its thicker cross-section, which gives it more surface area to grip the clutch. This means less slippage, especially when you're accelerating through a wider range of speeds, so you get quicker response. The cog design on both the top and bottom helps support the internal cords, increasing the belt's output while also helping it run cooler and stay flexible. It's made with fiber-loaded rubber and strong aramid fiber cords, so it grips the clutch firmly and holds its performance without stretching over time.

This is a fifth-generation belt, meaning it's the result of decades of steady improvements. It's built to handle the power demands of today's snowmobiles and keep you moving through the snow.