The kit includes a black rear sprocket and a gold X-ring chain, both manufactured by DID and JT. The chain is made with high-quality materials and is suitable for models ranging from 2022 to 2024. JT sprockets are made using only the best available materials.SCM420 chromoly steel alloy for front sprockets, and we are the only sprocket manufacturer using the ultra-durable high carbon C49 steel for rear sprockets.