🚴♀️ Shift Your Ride into High Gear!
The SHIMANO Acera RD-M3020-SGS Rear Derailleur is engineered for optimal performance with its Double Servo mechanism, offering compatibility with 7 and 8-speed drivetrains. Its SGS long cage design supports a chain wrap capacity of 45 teeth, making it a versatile choice for cyclists seeking reliability and smooth shifting. Backed by a 2-year warranty, this derailleur is a must-have for any serious rider.
| Mounting Type | Braze-On Mount |
| Manufacturer | Shimano |
| UPC | 192790897738 |
| Item Package Dimensions L x W x H | 7.01 x 4.13 x 3.78 inches |
| Package Weight | 0.38 Kilograms |
| Item Dimensions LxWxH | 7.01 x 0.84 x 4.06 inches |
| Brand Name | SHIMANO |
| Warranty Description | 2 years |
| Model Name | M3020 Acera |
| Suggested Users | Rear Derailleur |
| Number of Items | 1 |
| Part Number | ERDM30208SGSL |
| Included Components | Rear Derailleur |
| Size | SGS Long Cage |
W**S
Best upgrade for a 1x8
Easy to install and adjust. Works perfect even dirty from muddy trails
G**O
High quality and well priced
I needed a long cage derailleur to accommodate an 11-40T Shimano cassette. The installation was easy and fast. By following the instructions from the following video on Youtube by Park Tool, "How to Adjust a Rear Derailleur – Limit Screws & Indexing," the derailleur performs well. The shifting is on point, quiet, and smooth. I am very satisfied with the derailleur.
D**E
No hassle fitment! Made my upgrade easy!
Upgraded drivetrain on wifes Aventon LEVEL II from 8 speed 12-32 cassette to 11-40, needed a derailleur to accommodate the larger cog. Works perfectly! (Recommended)
L**R
Good upgrade for Lectric Ebikes
The cheap derailer that came on my Lectric Ebike skipped a lot and I could not adjust it to work better. Although this is a lower level shimano, it works perfectly on my Ebike and solved the skipping problems. Great value for the money.
D**Z
Perfect
Smooth shifting, excellent quality
J**R
Worked well
Replacement for a cheaper one on my so a bike, shifts nice and works very well. Very satisfied
D**S
solid upgrade!
Swapped it in a banged up one on my specialized roll 2.0 sport - looked for an upgrade and my gear changing is perfect now (one slight click and a perfect change)(also through on a new chain - runs like a dream now). Would note that I also bought a new derailer hanger - they are designed to bend first so if you are upgrading an old one that's been dropped a few times you probably need a hanger too (they are about $10-$15 and specific to your bike).
O**6
Perfect
Perfect for the build, works
Trustpilot
1 month ago
1 month ago
