Shimano Altus RD-M370 9 Speed Rear Derailleur

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The 9-speed Shimano Altus M370 rear derailleur use its Mega 9 Drive Traindesign to deliver smooth, light action shifting performance.


Mega 9 -The 9-speed gear cluster actualises close ratio gearing without impairing wide gear range.

Double Servo-Shimano's double servo-panta mechanism enables the rear derailleur to move in an optimum path.The guide pulley tracks the cogs closely while moving front to back, optimising each shift. Perfect tracking contributes to the most accurate SIS shifting.

HG Sprockets-The distinctively designed HyperGlide sprockets incorporate specially positioned shift ramps and tooth profiles for improved chain control during shifting. Fast and responsive indexed shifting is the result.

The HG cassette sprocket, which was developed for the MTB 10-speed system, underwent comprehensive optimisation to achieve super-highly efficient shifting.


Possible to select appropriate gear combination for stress free long riding

Mega 9 Drive Train

Smooth / light action shifting performance

Low profile concept with Double Servo-panta technology

Wide Link for durability and precise shifting


Colour Black, Silver
Cable Adjuster Yes
Compatible chain HG 9-speed
Direct attachment (Conventional) Yes
Low Sprocket Max: 34T

Min: 28T
Max Front Difference 22T
Pulley Sunken type pulley bolt:X (Guide pulley) (Tension pulley)

Pulley Teeth: 11/11T

Cage: SGS
Rear Speeds 9
Top-Normal Sprint Type Double Servo
Top Sprocket Max: 11T

Min: 11T
Total Capacity 45T