Shimano Alivio CS-HG400 Cassette Keep Shifting If your rear derailleur is shifting funny, chances are you need a new cassette. Worn-out cassettes can cause shifting problems. The Shimano Alivio CS-HG400 Cassette has a nickel-plated finish for corrosion resistance and drilled cogs for weight savings. It features a nickel-plated steel lockring, and the CS-HG400 cassette meets durability requirements for E-MTB applications. Features Nickel-plated finish for corrosion resistance Drilled cogs for weight savings The CS-HG400 cassette meets durability requirements for E-MTB applications Specifications Cassette Body Type Shimano/SRAM 8, 9, 10-Speed Cassette Cogs11-32T, 11-34T, 11-36TDrivetrain Speeds9-Speed Cassette Material Steel Weight N/A | Shimano | Alivio Cs-Hg400 Cassette 9 Speed 11-32T Silver