Shimano Ultegra CS-R8101 Cassette - 12-Speed 11-30t Silver ModelNumber=E3872 Shimano CS-HG41 7/8-Speed cassettes feature

Shimano CS-HG41 7/8-Speed cassettes feature Hyperglide technology for reliable shifting performance and nickel plated steel gears for added corrosion resistance

Misc 110mm

Defined Color Black Spindle Interface Type RaceFace/Easton CINCH Chainring BCD Direct Mount CINCH Color Matte Black Chainline/Hub Compatibility 130 Hubs Chainline/Hub Compatibility 135/142 Road Disc Hubs > 415 mm Chainstay Chainline/Hub Compatibility 135/142 Road Disc Hubs < 415 mm Chainstay Drivetrain Speeds 10 Drivetrain Speeds 11 Weight 534 Number of Chainrings No Rings No Spider Included Crank Intended Use Cyclocross Crank Intended Use Gravel Crank Intended Use Road BB Included No Pedal Spindle 9/16" Crank Length (mm) 175

Bridge tool (FE-1108) is suggested when using the light/camera mount in conjunction with the computer mount to help stabilize the heavier loads

Shimano Ultegra CS-R8101 Cassette - 12-Speed 11-30t Silver ModelNumber=E3872 Shimano CS-HG41 7/8-Speed cassettes featureShimano Ultegra CS R8101 Cassette 12 Speed 11 30t Silver. The uninterrupted shifting experience of the Shimano Ultegra CS R8100 12 speed cassette range lets you climb sprint or cruise without stopping to think about your next gear change. Larger driving cogs maximize drivetrain efficiency and create compatibility with both Shimano 11 and 12 speed freehub bodies. Shimano HYPERGLIDE+ technology is integrated to provide seamless shifts both up and down