Prestacycle UniBlock PRO Cassette - 11-Speed HG 12 Interface HG 12/11/10 Freehubs 11-30t Silver MFPN=910-21-441 No Spider Included Drivetrain Speeds Rate Range:500-550Lbs

Prestacycle UniBlock PRO Cassette 11 Speed HG 12 Interface HG 12 11 10 Freehubs 11 30t Silver MFPN=910 21 441 No Spider Included Drivetrain Speeds Rate Range:500 550Lbs No Spider Included Drivetrain Speeds 12 Chainring BCD Direct Mount Chainline Hub Compatibility 141 148 Boost Hubs Color Black Crank Length (mm) 175 Crank Intended Use Mountain Weight 630 BB Included No Pedal Spindle 9 16" Spindle Interface Type Shimano Hollowtech II Defined Color Black keyword search FC M8120 Size 175Mm Madshus is the only manufacturer that we know of who builds the junior skis out of the same materials as the adult top of the line skis The UniBlock PRO cassettes feature ARC™ shifting tooth profile technology that provides the fastest smoothest possible shifting to all systems while minimizing the impact to power delivery Prestacycle UniBlock PRO Cassettes are machined from a single solid block of cold forged Chrome Molybdenum alloy steel then heat treated tumble finished and electroplated for added durability low friction operation and longer service life