Gates XL® V-belt has special design features – fiber-loaded reinforcement and molded notches – that reduce maintenance and extend the belt's service life. The reinforcement on the top of the belt provides greater lateral stability, and additional flexibility along the length of the belt. Also, tensile cords within the XL belt contract slightly as the belt warms to its normal operating temperature. This feature reduces maintenance because once they are properly installed, Gates XL belts rarely need to be retensioned. The variable notching pattern on the belt's underside increases flexibility, reduces noise and allows a tighter bend radius over the smaller diameter pulleys found on today's compact heavy-duty engines. The molded notches also trap air and dissipate heat, allowing the Gates XL belt to cool itself. This reduces wear and deterioration caused by higher temperatures.

• Fiber-Ioaded rubber stock puts more flexibility along the length of the belt, yet gives the belt greater lateral stability in the pulley.
• Thermally active tensile cords provide maintenance-free performance when properly installed and tensioned.
• Form-ground construction ensures precise top width and sidewall dimensional control for proper fit in pulley as well as a smoother, quieter running belt.
• Belt undercord is aramid fiber reinforced.
• Meets or exceeds SAE J636c specifications.