Shimano Ultegra CS-R8000 Cassette - 11 Speed 12-25t Silver MFPN=00.6518.018.001 The Xpresso 6 features carbon

The Xpresso 6 features carbon blade tension adjustment a low stack height and an oversized platform for pedaling efficiency and comfort

Calipers are 74mm post mount to be used with applicable adapters

this is hardwax made for the coldest conditions

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Shimano Ultegra CS-R8000 Cassette - 11 Speed 12-25t Silver MFPN=00.6518.018.001 The Xpresso 6 features carbonShimano Ultegra R8000 11 speed cassette provides high performance gear combinations that provide superior rider choice. The CS R8000 cassette meets durability requirements for E MTB applications Range 12 25 Cogs 12 13 14 15 16 17 18 19 21 23 25 Cassette Body Type Shimano HG 11 12 Speed Road Drivetrain Speeds 11 Color Silver Weight 243 Designed for ebike Yes Defined Color Silver