Fabric-Reinforced Belts
These belts have a layer of fabric inside their grooves. This design ensures that if the vehicle experiences pulley misalignment — meaning the pulleys engaged with the belt are slightly forward or backward — the belt does not produce noise. In some models, all internal grooves are completely covered with fabric. These belts are also called Noise-less belts because they are designed to eliminate drive system noise completely. These belts have very high strength and are usually made of EPDM, providing excellent durability and thermal resistance.