timing belt set (2 Pcs.) fits Ducati 749 996 998 999 S R 1000 S4R Number of teeth: 89 Belt width: 21mm This set contains both required belts! The production of these valve timing belts starts with a fabric / rubber mat which is sewn together in the first operation in order to obtain a roll which is then applied to the vulcanization mold with a specific tooth profile. In the course of the following operations, various layers of rubber material and the tensile strand are laid on and vulcanized together. The pull cord (made of fiberglass) transfers the main load and gives the belt additional stability. .
