BIS certification for chains for motorcycles is based on the standard regulation IS 11740:2014, which focuses on assessing the performance, safety, and durability of chains found in motorcycle drive systems. These standard covers requirements related to dimensions, materials, construction, and mechanical properties necessary to ensure reliable power transmission from the motor to the rear wheel. Motorcycle chains are subject to high motor speeds, mechanical stress, and constant environmental degradation, including dust, heat, and moisture. Therefore, consistent strength, flexibility, and corrosion resistance are crucial for performance, reduced maintenance cycles, and rider safety. IS 11740:2014 is consistently observed with respect to motorcycle chains. BIS certification for motorcycle chains demonstrates conformance to Indian national standards for quality and safety. ISI marked chains indicate to motorcycle and motorbike customers that these chains are precision engineered and can be relied upon for durability and quality, resulting in a better and more efficient riding experience.