With KMC's Double X Bridge design chain shifts are crisp and smooth
KMC 12-speed MissingLink chain link included
SIL-TEC surface treatment increases durability
B-axle 2_Hollow axle:✔
Shimano Deore BB MT500 Press Fit Bottom Bracket BB-MT500 Bike Components & Parts With KMC's Double X BridgeModel: BB MT500 Fits 68 73 bb shell width Type: BSA (BC 1. 37) Made in Malaysia Sealed cups keep out dirt and water Maintenance free, easy installation Compatibility: Deore FC M617, FC M6000, FC T6010, FC M4100, FC M5100, FC M6100, FC M6120, FC M6130 Alivio FC M4050, FC M4060 FC M627 FC MT200, FC MT210, FC MT300, FC MT500, FC MT510, FC MT511, FC MT610 Specifications: Application: All Mountain, Touring & Trekking Type: Press Fit BB MT500 Shell