Ultimax Snowmobile Belt- 125-4240U4

This is the Ultimax PRO snowmobile belt, part number 125-4240U4. It's built to give mid-horsepower snowmobiles better performance and a longer belt life. The PRO belt has a thicker cross-section compared to stock, 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 both the top and bottom of this belt helps dissipate heat and allows for better flexibility, all while providing strength. This updated design helps it handle the power from today's snowmobiles and run cooler. It's made with fiber-loaded rubber and strong aramid fiber cord construction, which grips the clutch well and maintains performance without stretching over time. This is the fifth generation of this belt design, benefiting from decades of refinement and steady improvements.