GUFERO® variable speed engine belts are wide engine belts which fulfil the most demanding requirements with regards to dynamic stress and lateral rigidity. They excel due to their high quality and long service life. Variable speed engine belts are usually used in drives with stepless speed variation, in drives with variable speed engine belt pulleys and with Variomatic transmission gears and automatic transmission gears. The advantages of variable speed engine belts are their long service life, smooth and silent running and their transmission of high power. Variable speed engine belts are resistant to oils and other chemical substances. The temperature resistance of variable speed engine belts is from -30 °C to +80 °C.