Ultimax Snowmobile Belt- 147-4457U4

This is the Ultimax PRO snowmobile belt, part number 147-4457U4. It's built to give mid-horsepower snowmobiles the best performance and longest belt life. The PRO belt has a thicker cross-section compared to standard belts, which increases the surface area that contacts the clutch. This means you'll experience less slippage across a wider range of speeds, leading to quicker acceleration when you need it.

The cog design on this belt is key to its performance. It not only adds strength and helps dissipate heat, but it also aids flexibility, all contributing to better performance and a longer lifespan. The fiber-loaded rubber and strong aramid fiber cord construction work together to grip the clutch effectively and maintain performance without stretching over time. This is a fifth-generation belt, benefiting from decades of refinement and steady improvements in design and materials to handle the power demands of modern snowmobiles.