Slx m7000 11 speed cassette featuring light weight minimal design sprocket carrier hyperglide sprockets have a computer designed tooth configuration with contoured shift gates resulting in a crisp smooth shift even under load close ratio gearing allows a more efficient use of energy through finer cadence control sprockets are cut away and drilled to reduce weight without reducing rigidity for 11 speed hg ev mtb chains average weight 467 g for 11 40t