Shimano Deore XT CS-M8100 12-speed 10-45T cassette.

The new SHIMANO DEORE XT M8100 12-speed cassette saves weight thanks to its BEAM SPIDER design and at the same time spends SHIMANOS MTB drives another gear. With SHIMANOs new MICRO SPLINE freewheel body and the HYPERGLIDE+ tooth profile provide these cassettes with 10-45 and 10-51Z for high-quality shifting.

Improved shifting performance

• New climbing aids with HYPERGLIDE+ technology ensure the fastest and most comfortable shifting possible

Beamspider: 

• Lighter and more robust design.
• Reduces cassette inertia, resulting in faster acceleration and better chain control

MICRO SPLINE

• New design of FREEHUB freewheel body allows small 10-tooth sprocket

12-speed drivetrain with high bandwidth or narrow sprocket spacing