144-4740U4 Ultimax Pro drive belt for snowmobiles, manufactured by Carlisle. Ultimax 3 has evolved into Ultimax Pro. The new Pro belt features a thicker cross section so more surface area contacts the clutch. This means less slippage over a broader speed range for quicker acceleration. The new cog design dissipates heat and aids flexibility. Cooler running belts mean better performance and longer lasting belts. Run cool, run long, run fast with Ultimax Pro.

Additional Features:

Each belt is crafted from only the best rubber compounds and tough Aramax cord.

Carlisle belts enhance the efficiency of the variable speed drive system.

Ultimax eliminates excessive friction and tension preventing drive damage.

Exacting belt length tolerance minimizes system wear and avoids slippage.

XS-designed for high horsepower sleds and delivers superior performance and longer belt life.

Thicker cross section so more surface area contacts the clutch giving less slippage over a broader speed range for quicker acceleration and cooler running.

Max-designed for general service machines under 500cc. Improved cog design for greater flexibility and cooler running.

Please refer to the Compatiblity tab for a full listing of known compatible models.

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