About Shimano Alivio RD-M3100 Shadow 9 Speed Rear Derailleur
The SHIMANO ALIVIO M3100 rear derailleur delivers a low profile design that lets you ride aggressively with fewer interruptions thanks to its SHIMANO SHADOW design.

Features
Low-profile design

Total capacity: 45T

Max. low sprocket: 36T

Adjustment barrel

Specifications
Model No: RD-M3100-SGS

Series: SHIMANO ALIVIO M3100 Series

Compatible Chain: CN-HG53 9-speed

Total Capacity: 45T

B-Axle Hollow Axle: Yes

Cable Adjuster: Yes

Mount Direct Attachment (Conventional): Yes

Fluoric Coated Link Bushings: 1

Low Sprocket Max: 36T

Low Sprocket Min: 32T

Max. Front Difference: 22T

Pulley Sunken Type Pulley Bolt: Yes

Pulley Teeth: 11T

Pulley Cage: SGS

Top Normal Spring Type SHIMANO SHADOW RD: Yes

Top Sprocket Max: 12T

Top Sprocket Min: 11T

Rear Speeds: 9

About Shimano
Shimano is a Japanese multinational manufacturer founded in 1921 by Shozaburo Shimano. They are well known as the largest bicycle component manufacturer in the world with their main manufacturing plants in Kunshan, China; Malaysia; and Singapore. Along with cycling components they also produce fishing tackle, and rowing equipment.