Shimano Deore 12-Speed CS-M6100-12 10-51t Silver For Hyperglide+ Cassette Shimano Ultegra Di2 11 Speed If you want to exceed

If you want to exceed your goals in the gloriously unique crucible of triathlon

Carbon fiber gets all the credit these days

On or off the bike

Redesigned this year

Shimano Deore 12-Speed CS-M6100-12 10-51t Silver For Hyperglide+ Cassette Shimano Ultegra Di2 11 Speed If you want to exceedThe Shimano CS M6100 12 speed cassette is designed for use with Deore M6100 drivetrains. Use with Hyperglide+ chain All steel cogs Designed for single front chainring setup Micro Spline interface Color: Silver Cassette Body Type: Shimano Micro Spline Drivetrain Speeds: 12 Defined Color: Silver Cassette Cogs: 10 12 14 16 18 21 24 28 33 39 45 51 Range: 10 51