Ultimax Snowmobile Belt- 138-4332U4

This is the Ultimax PRO snowmobile belt, part number 138-4332U4. It's built to give mid-horsepower snowmobiles better performance and a longer belt life. The PRO belt has a thicker cross-section than stock, which increases the surface area that contacts the clutch. This helps reduce slippage across a wider range of speeds, leading to quicker acceleration when you hit the throttle.

The cog design on this belt is a key feature. It adds strength, helps dissipate heat that builds up during operation, and makes the belt more flexible. This combination means you get improved performance and the belt lasts longer. It's constructed with fiber-loaded rubber and strong aramid fiber cords, which grip the clutch well and maintain performance without stretching over time. This is the fifth generation of this belt design, benefiting from decades of refinement and steady improvements to handle the power of today's snowmobiles while running cooler.