Slx m7000 cassette 11 speed slx is now 11 speed the new slx m7000 hyperglide cassette makes use of a lighter aluminium construction with aluminium and steel cogs this helps provide an extremely wide gear range whilst keeping the weight down dyna sys technology close ratio gear change ratios 11 13 15 17 19 21 24 27 31 35 40 11 13 15 17 19 21 24 28 32 37 42