Shimano Acera CS-HG41 7-Speed Cassette Shifting Up If you're looking to improve your climbing ability, you might want to upgrade your cassette. The Shimano Acera CS-HG41 7-Speed Cassette offers Shimano's Hyperglide shifting across its 7-speed range. It is compatible with both IG and HG chains. Features Hyperglide technology across its 7-speed range Cassette Body Type: Shimano/SRAMIntended Use: Mountain, Commuting, Cruiser Chain Compatibility: HG and IG chains | Shimano | Acera Cs-Hg41 7 Speed Cassette | Silver | 11-28T, 7 Speed