Specifically engineered to optimize Eagle Transmission, the XX SL Eagle Transmission Flattop Chain features a unique flat top. Not only does this shape maximize shifting performance and robustness, but it also contemporizes the look of your super bike, especially with its outer plate cut outs and hollow pins that push the strength-to-weight ratio to an unprecedented level. Not suitable for E-MTB Flattop design specifically engineered for Eagle Transmission Ultimate shifting performance, game-changing aesthetics Super-light outer plates with cut-out design Includes PowerLock connector 126 Links 12 Speed only