JT sprockets are made using only the best available materials. Aviation-grade 7075-T6 aluminium alloy for lightweight competition sprockets, 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.
Every sprocket goes through up to 25 production stages and 10 individual quality control checks before it is ready to leave the factory and the production facility has achieved the highest European quality standards.
Available sizes: 38, 39, 40, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 55
Material: C49 High Carbon Steel