Gates T145RB Blue Racing Timing Belt Gates Blue Racing Timing belt. 107 Teeth, .945" (24mm) Top Width, .375" (9.5mm) Pitch, 40.125" (1019mm) Pitch Length of stock belts. Durable nylon fiber provides extra wear resistance, doubling tooth strength Aramid reinforcement in a patented EPDM compound for three times the heat resistance and durability of standard belt Patented EPDM compound gives Gates Racing belts extended service life