Sram PG-830 8-Speed Cassette 11-28T Silver compatio_raw They feature sticky rubber that's

They feature sticky rubber that's tapered up towards the lock-ring for a sure-fire grasp

Dual Action pump with thumblock lever

Beer sold separately

and 25g threaded CO2 cartridges

The Contact is engineered to offer maximum stiffness at the lowest possible weight

Sram PG-830 8-Speed Cassette 11-28T Silver compatio_raw They feature sticky rubber that'sCassette technology optimized for MTB. More reliable. More durable. Better performing, thanks to an optimal tooth profile and shift ramp design for quick and positive index shifting. Go climb a mountain. Sram's cassette performance is optimized by material choice, tooth profile and shift ramp design for quick and positive index shifting PowerGlide II 8 speed performance in an all steel cassette.