Shimano Acera M390-SGS 9-Speed Long Cage Rear Derailleur
Shimano Acera M390-SGS 9-Speed Long Cage Rear Derailleur
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SKU:ERDM390SGSL
The Shimano Acera M390-SGS Rear Derailleur is a 9-speed derailleur designed for long cage setups. It is part of the Acera RD-M390 series, which is known for its precise shifting and durability thanks to its Wide Link mechanisms. This derailleur is suitable for use with 9-speed drivetrains and is a reliable choice for riders looking to upgrade or maintain their bike's shifting performance.
- Color: Black
- Largest Cog: 34
- Rear Derailleur Mount Type: 10x1 Standard
- Chain Wrap Capacity (teeth): 45
- Cage Length: Long
- Rear Der/Shifter Compatibility: Shimano Mountain
- Drivetrain Speeds: 9
What Size?
Finding the right size bicycle is important for a comfortable and enjoyable ride. There are various frame sizes available that are designed to fit riders of different heights, as well as different wheel sizes and frame styles. To choose the best fit, you can look at the sizing and geometry chart provided by the manufacturer. This will show you the seat tube length and top tube length, which can affect the stand-over clearance and comfort of the bike. You want to aim for a comfortable position that isn't too cramped or stretched out. If you have any questions about finding the right size bike for you, our team of experts is always happy to help.
| Child height (Inch) |
Child height (cm) |
Wheel size |
|
2’9”-3’1″ |
85-90 cm cm | 10/12 inches |
| 3’1”-3’3″ | 90-100 cm | 12/14 inches |
| 3’3”-3’7″ | 100-110 cm | 14/16 inches |
| 3'7"-3'8" | 110-115 cm | 16/18 inches |
| 3’8”-4’0″ | 115-120 cm | 18/20 inches |
| 4'0”-4’5″ | 120-135 cm | 20/24 inches |
| 4'5"-4'9" | 135-145 cm | 24/26 inches |
| 5 inches+ | 145 cm + | 26 inches |
|
Adult height (Inch) |
Frame Size (Inches) | Frame size |
| 4'10-5'2" | 13 - 14" | X-Small |
| 5'2-5'6" | 15 - 16" | Small |
| 5'6-5'10" | 17 - 18" | Medium |
| 5'10-6'1" | 19 - 20" | Large |
| 6'1-6'4" | 21 - 22" | X-Large |
| 6'4-6'6" | 22 - 24" | XX-Large |
|
Adult height (Inch) |
Frame Size (Inches) | Frame size |
| 4'10-5'2" | 47-48 cm | XX-Small |
| 5'2-5'6" | 49 - 50 cm | X-Small |
| 5'3-5'6" | 51 - 53 cm | Small |
| 5'6-5'9" | 54 - 55 cm | Medium |
| 5'9-6'0" | 56 - 58 cm | Large |
| 6'0-6'3" | 58 - 60 cm | X-Large |
| 6'3-6'6" | 61 - 63 cm | XX-Large |