The Shimano Acera CS-HG400-8 is a wide-range 8-speed cassette that pairs dependable HYPERGLIDE shifting with a low 40-tooth climbing gear, making it a smart choice for trail, commuting and touring bikes that need an easy gear for the hills.

Highlights

• Wide 11-40T range gives you a genuine bail-out climbing gear without changing your drivetrain speed
• HYPERGLIDE tooth profiling delivers fast, quiet, reliable shifts under load
• Steel sprockets with a chrome/nickel-plated finish resist wear and corrosion for a long service life
• Slots straight onto a standard Shimano HG freehub body, so it is an easy upgrade or replacement
• Supplied with a steel lockring for secure, no-fuss installation

Wide range, easy climbing

The 11-13-15-18-22-27-33-40T spread keeps useful steps between gears while handing you a 40-tooth low sprocket for steep pinches and loaded riding. It is an ideal way to add climbing range to an 8-speed MTB, hybrid or touring setup.

Proven HYPERGLIDE shifting

Shimano's HYPERGLIDE shift ramps and tooth shaping guide the chain smoothly between sprockets, so gear changes stay crisp and quiet even when you are pushing hard. The steel construction and plated finish hold up to year-round use.

Compatibility & fit

This is an 8-speed cassette that fits a standard Shimano/SRAM HG 8/9/10-speed freehub body. Use it with an 8-speed HG (or IG) chain and an 8-speed-compatible rear derailleur with enough capacity for the 40T low sprocket. Sold as the cassette and lockring only; chain and derailleur are not included.