Hot Cams Camshaft Chain Silent Kit is engineered to exceed O.E.M. specifications and tolerances. Exclusive heat treatment of links creates excellent friction and impact resistance to minimize the rate of chain stretch. Silent chain design offers quieter operation while running at higher speeds. Exclusive heat treatment of links. Excellent friction and impact resistance minimizes the rate of chain stretch. Engineered to exceed O.E.M. specifications and tolerances. Detailed Specifications: Chain inner width (mm): 5.100. Chain overall width (mm): 8.250. Chain pitch (mm): 6.350. Number of links: 142.