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

Easy to use an install , good quality, way to adjust , and functions well

The Shimano Alivio RD-M3100 Rear Derailleur is an excellent choice for anyone looking to upgrade their 9-speed mountain bike's drivetrain. Featuring a sleek, low-profile design and Shadow RD technology, this derailleur provides smooth, reliable shifting while minimizing chain slap and damage from rocks. The 45-tooth total capacity and 36-tooth maximum low sprocket size make it compatible with a wide range of cassettes, while the adjustment barrel allows for easy tuning to achieve optimal shifting performance. Overall, I'm very impressed with the performance and durability of the Shimano Alivio RD-M3100 Rear Derailleur, and I would highly recommend it to anyone looking for a high-quality, reliable rear derailleur for their 9-speed mountain bike.

Easy to fit and for a complete noob whom can't elven ride so knows nothing about bikes but had to repair my sons it was simple and easy fit replacement

Used these to replace the smashed ones when I fell off my bike. Took my time setting them up and used a new cable /chain and gear change is silky smooth.

Simple to fit works perfectly

Fitted easily with no problems.

bought this as replacement to my previous Alivio. Was servicing my bike slowly (not the main one I have) and a month since purchasing I installed the item - all looked OK, up to the point when I installed new line - it turned out that there was a one, very tiny bit missing in derailleur (place where line leaves last derailleur part before being terminated 2 inches later with allen key. old one has protective ring, whereas this one was missing, meaning that each time the gear shifted, the line itself was rubbing against sharp edge of the thread (will probably last few weeks like that); consulted shimano dealer who said this thing should be there. trusting this was properly built item, I missed the return window by two days, meaning lost about £30 - the reason for 1 out of 5 points as it is useless to me. thanks.

Very good derailed

En orginal Shimano bakväxel som funkar helt perfekt som utbytesväxel

Muy bueno calidad precio, cambia los comicios muy suave

Prima

Cambio 9 V con vite di regolazione guaina , ottimo prodotto con spedizione ultraveloce , pacchetto un po’ anonimo ma completo x cui soddisfatto

20インチの折りたたみ自転車に取り付けました。 6sから9sにグレードアップさせたのですが、走行性能がかなりアップしたと感じました。 見た目も気に入っています。（もともとはTourneyを使用していました） しかしミニベロ勢にはオススメ出来ないかもです。取り付けて気が付きましたが、ディレイラーと地面とのクリアランスがこの商品ではあまり取れません。 自己責任で使用していますが、少し危なっかしいです。 20インチ（406）超であれば問題ないでしょう。 とにかく性能は非常に良い！