Black,ERDM3100SGS Alivio Alivio M3100 Rear derailleur, 9-Speed, Shadow Design, SGS Long cage
Details
- BrandSHIMANO
- ColorBlack
- Materialother
- Item Weight200 Grams
- Case MaterialSteel &
Description
🚵♂️ Shift into adventure mode with Shimano’s stealthy, durable drivetrain upgrade!
- EXTENDED GEAR RANGE - SGS long cage accommodates up to 36 teeth, giving you the versatility to conquer steep climbs and fast descents.
- SEAMLESS 9 SPEED SHIFTING - Experience smooth, reliable gear changes with Shimano’s HyperGlide system—no more missed shifts on your trail rides.
- TRAIL READY SHADOW DESIGN - Ultra-flat profile minimizes damage risk from rocks and roots, keeping your ride flawless and fearless.
- DURABILITY MEETS PERFORMANCE - Optimized spring tension prevents chain drops and premature wear, ensuring your drivetrain stays in peak condition.
- EFFORTLESS INSTALLATION COMPATIBILITY - Braze-on mount and unisex design make upgrades simple—perfect for serious cyclists who demand reliability.
The Shimano Alivio M3100 Rear Derailleur features a 9-speed HyperGlide system and Shadow RD technology for enhanced durability and smooth shifting. Its SGS long cage supports a wide gear range up to 36 teeth, optimized spring tension prevents chain drops, and the braze-on mount ensures easy installation. Designed for trail and trekking cyclists, it offers a flat, impact-resistant profile to withstand rough terrain, backed by a 2-year manufacturer warranty.
Specifications
| Mounting Type | Braze-On Mount |
| Number of Teeth | 36 |
| Product Dimensions | 6.69"L x 4.43"W x 3.94"H |
| Manufacturer | Shimano |
| UPC | 192790621159 |
| Item Package Dimensions L x W x H | 6.81 x 4.92 x 2.17 inches |
| Package Weight | 0.28 Kilograms |
| Item Dimensions LxWxH | 6.69 x 4.33 x 3.94 inches |
| Brand Name | SHIMANO |
| Warranty Description | 2 Year Manufacturer |
| Model Name | C8C086 |
| Suggested Users | unisex |
| Number of Items | 1 |
| Part Number | ERDM3100SGS |
| Model Year | 2021 |
| Style | Single |
| Included Components | Bike Parts |
| Size | standard size |
| Sport Type | Cycling |
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Reviews
M**5
High Quality..
I felt a little bit wobbling, doubted and ordered another product to replace it. But, it has worked about 3750 miles very accurately, and it seems that it's going to work a lot.
B**.
Good derailure, very interesting design.
This was an inexpensive Shimano Alvio class derailure system that I bought for my old Rans Nimbus long wheelbase recumbent. The freewheel is a Shimano 7 speed mega and I also changed out the shifter from a Revoshift to a Shimano trigger shifter.What surprised me was how close the derailure rides next to the wheel spokes. It never touched but I had to tie the cable tail back so I wouldn't touch the spokes.It shifts very well especially after changing out the old chain to a KMC 8 speed.
A**N
Works great in the 9 speed application
Always reliably hits the gear.
J**S
Works on 10-speed Shimano 105 road bike
Being older and bigger guy I need to have a granny gear for climbing the 7-9% grades in western New Mexico. After talking with a mechanic from the Trek SuperStore in Albuquerque he said that this would allow me to run a 11-36t 10-speed cassette on my Bianchi road bike using Shimano 105 shifters. Even though it is labeled as 9-speed, it works well with the 10-speed set up. The only major issue was dialing in the B screw on the back to get a gap so that gears don't touch the freewheels of the derailleur.
M**H
Easy change
Derailed sent was in good condition. Able to replace Shimano 105 short cage on old Giant Defy to accommodate larger cassette. Seems to work very well
A**E
Excelente relación calidad vs precio.
La eficiencia y rendimiento del tensor son muy buenas para ser de gama media. El paso de los cambios es suave, incluso en condiciones donde la cadena está tensionada (en subida), y en las bajadas por terrenos destapado (trochas) se mantiene la tensión de la cadena, evitando ruidos excesivo y golpe de la cadena con el marco.Lo tengo montado junto con una pacha ( casetera de piñones) 11 - 42 marca sunrise y ha funcionado bien
B**R
well i expected more
shimano name , not great quality ,returned mine,brought Deore
G**Y
Good for on road
After a few months of constantly adjusting, removing/reinstalling it, even replaced the cable, I pretty much gave up on it being serviceable on the rough mtn bike trails. No issues on road and smooth trails but bumps wreck havoc. Have had the chain come off, it skips, pretty sure it hits into the gears - its so compact and too close. I plan to replace it soon.
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