XX SL Eagle T-Type Flattop Chain Comfort it requires an oversized 68mm

it requires an oversized 68mm or 73mm bottom bracket shell and PressFit bearings held in place by snap rings

5-panel construction to reduce seams and limit irritation

Back panel premium Japanese Yamamoto 39 Cell nylon laminated durable neoprene

perfect for fast swim-to-bike transitions

XX SL Eagle T-Type Flattop Chain Comfort it requires an oversized 68mmSpecifically 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 specifically engineered for Eagle Transmission.