The components of the auxiliary timing are fundamental parts for the proper functioning, over time, of the transmission system. Fixed tensioners and idler pulleys in steel or plastic ensure the correct tension of the poly-v belts facilitating movement and alignment while reducing vibrations and noise. Our tensioners and idlers guarantee efficiency and durability because they are systematically subjected to severe function and simulation tests under the extreme conditions of use. The range consists of over 350 items that can be installed on more than 2.000 models of cars and light commercial vehicles.