Shimano CS-HG400-9 cassette from the Alivio product group dedicated to 9-speed drives.

Specification:

• It is recommended for use primarily in MTB bikes, but it can be successfully used in trekking bikes.
• Compatible with 9-row drives
• It is designed to work with HG chains (including CN-HG53, CN-HG73, CN-HG93, CN-7701)
• Gear range from 11 to 25 teeth (111-12-13-15-17-19-21-23-25).
• Average product weight: 255 g

Technologies used:

HyperGlide laces

• The specially designed HYPERGLIDE sprockets feature distinctive shifting ramps and tooth profiles for better chain control during shifting. HG sprockets guide the chain quickly and directly to the next sprocket without overloading. Conventional sprockets cause the chain to rise and pass over the sprocket teeth before selecting the sprocket.

MEGA-9 power unit

• The 9-speed sprocket cassette gives a close gear ratio without compromising the gear range.

MEGA-9 LITE

• This system has three features:
  
  • Optimal gear ratio for each wheel size - the larger the wheel, the greater the range of cassettes necessary to maintain light pedaling.
  • Advanced front shifting system - gear combinations adapted to each wheel size to reduce the number of corrective rear shift shifts with a small front shift.
  • Improved tire clearance for increased maneuverability - redesigned front derailleur that allows the wheel track in the frame to be reduced.