About Shimano XT CS-M8100 10-51 12 Speed Cassette
With its BEAM SPIDER construction, the new SHIMANO DEORE XT M8100 12-speed cassette shaves weight while increasing SHIMANO's MTB gearing range another gear. Using SHIMANO's new MICRO SPLINE freehub body and HYPERGLIDE+ tooth profile, these 10-45 and 10-51T cassettes deliver advanced shifting performance.

Features
Definitive shifting performance

New shift ramp designs provide the fastest, smoothest shifts by HYPERGLIDE+

BEAM SPIDER

Lighter and stiffer construction

Reduced cassette inertia resulting in faster acceleration and increased chain security

MICRO SPLINE

10T lowest sprocket realized by new FREEHUB body construction

Wide range and close step 12-speed drivetrain

Specifications
Model No: CS-M8100-12

Series: DEORE XT M8100 Series

Average Weight: 470g

Combination: 10-12-14-16-18-21-24-28-33-39-45-51T

Combination Name (Group Name): 10-51T

Type: HYPERGLIDE+

Compatible Chain: HG 12-speed

Rear Speeds: 12

Aluminum Gear QTY (pcs): 2

Aluminum Spider Arm QTY (pcs): 1

Micro Spline: Yes

Steel gear_QTY (pcs): 10

About Shimano
Shimano is a Japanese multinational manufacturer founded in 1921 by Shozaburo Shimano. They are well known as the largest bicycle component manufacturer in the world with their main manufacturing plants in Kunshan, China; Malaysia; and Singapore. Along with cycling components they also produce fishing tackle, and rowing equipment.