Shimano CS-M8200 XT 12 Speed Cassette 10-51T RGroup_A1CEB9A47DFE2FBA9B24CCCB010C31C782B80CAB You also get a 4mm

You also get a 4mm Allen key for easy install and removal

Bike computer

while the thick-thin tooth design ensures maximum chain engagement for reliable shifting

and a Bosch motor

providing peace of mind on every ride

Shimano CS-M8200 XT 12 Speed Cassette 10-51T RGroup_A1CEB9A47DFE2FBA9B24CCCB010C31C782B80CAB You also get a 4mmThe Shimano CS M8200 XT 12 Speed Cassette 10 51T is engineered for mountain biking enthusiasts seeking a reliable and efficient drivetrain. With its wide 10 51T gear range, this cassette ensures smooth and precise shifting across various terrains, enhancing your riding experience. Its lightweight yet durable construction is designed to withstand the rigors of off road cycling, while the Hyperglide+ technology provides seamless gear transitions.