SHIMANO,Black,ERDM3100SGS Alivio Alivio M3100 rear derailleur, 9-speed, Shadow design, SGS long cage

Q: Would this work with a 42t cassette?

Shimano are listing the max sprocket size as 36T. You may be able to get it to work on a 42T with a hanger extender.

Q: Will this work on an 8 speed cassette

It is designed for a 9 speed setup but should work fine on 8 speed also.

Q: Would this work in 9 x 1 setup and how large can the cassette go?

Yes it should be fine on a 1 x 9 setup, the max sprocket on the Shimano website is 45T

Product ID: 216478948

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Details

Brand
SHIMANO
Colour
Black
Material
Aluminium
Item weight
200 Grams
Mounting type
Clamp-On Mount

⚙️9-speed precision shifting

🛡️Shadow RD low-profile design

🚵‍♂️SGS long cage for 36T largest cog

Frequently Bought Together

Shimano,Black,ERDM3100SGS Alivio Alivio M3100 Rear derailleur, 9-Speed, Shadow Design, SGS Long cage

SHIMANO Alivio SL-M3100 Alivio Shift Lever, 9-Speed, Band on, Right Hand,Black

Description

🚵‍♂️ Shift into the future with Shimano’s stealthy, trail-proof precision!

EXTENDED GEAR RANGE - Long SGS cage supports up to a 36-tooth largest cog, giving you the climbing power to conquer any mountain.
DIRECT MOUNT STABILITY - Shimano’s rear direct mount ensures a secure fit and enhanced drivetrain efficiency for professional-grade rides.
TRAIL READY DURABILITY - Optimized spring tension and flat Shadow RD design protect your derailleur from impacts and chainstay strikes, so you ride worry-free.
SEAMLESS 9 SPEED SHIFTING - Experience smooth, reliable gear changes with Shimano’s HyperGlide system, engineered for peak performance on every trail.
LIGHTWEIGHT ALUMINIUM BUILD - At just 0.4 kg, this derailleur balances strength and weight, perfect for all-season mountain biking adventures.

The SHIMANO Alivio M3100 SGS rear derailleur is a 9-speed, long cage drivetrain component designed for mountain bikes. Featuring a low-profile Shadow RD design and optimized spring tension, it offers superior protection against trail impacts and chainstay strikes. Compatible with a 36-tooth largest cog and Shimano’s HyperGlide system, it delivers smooth, durable shifting performance in a lightweight aluminium build.

Specifications

Product dimensions	17L x 11W x 10H centimetres
Manufacturer	SHIMANO
UPC	192790621159
Bike type	Mountain Bike
Color	Black
Size	One Size
Style	Single
Weight	0.4 Kilograms
Material type	Aluminium
Number of items	1
Seasons	All-Season
Sport	Cycling
Included components	nothing
Batteries included?	No
Department	Unisex
Item model number	C8C086
ASIN	B08CGYD213

Have a Question? See What Others Asked

Would this work with a 42t cassette?

Will this work on an 8 speed cassette

Would this work in 9 x 1 setup and how large can the cassette go?

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