The SRAM Red D1 Flattop Chain is a cutting-edge 12-Speed chain that employs Flattop technology, combining narrowness with impressive strength and resilience. Its reduced width creates additional space between cogs, resulting in a quieter drivetrain. Enhanced with Hard Chrome-plated inner link plates and rollers, this chain is built for longevity. The HollowPin design not only bolsters efficiency but also reinforces durability. Please note that this Flattop road chain is exclusively compatible with SRAM 12-speed road and gravel groupsets, distinct from a T-Type flattop chain. This chain is equipped with a Powerlock Quick Link for convenient installation and maintenance.