Shimano Acera RD-M3020-SGS Rear Derailleur - 7/8 Speed, Long Cage, Black

Q: Will this replace stx rc?

Yes it will as long as your low sprocket on your cassette is as least a 30t. There are cheaper Shimano derailleurs that will also work. What makes this one special is it can be used on a 1x setup with a 11-40T cassette.

Q: Will this replace an sis megarange?

A highly qualified "Yes". Be prepared to become a self-taught expert in bicycle derailleurs in the process. Expect to discover that you need other parts, such as a hanger-adapter. You will almost certainly need to replace your shifter cable and housing, as the cable entry is different, necessitating rerouting, and hence a different length cable and housing.

Product ID: 476106412

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Details

Brand
SHIMANO
Colour
Black
Material
Aluminum
Mounting type
Braze-On Mount
Manufacturer
SHIMANO

🔧SGS Long Cage for max chain wrap

⚙️Double Servo tech for precision

🚴‍♂️7/8 speed drivetrain compatibility

Frequently Bought Together

Shimano Acera RD-M3020-SGS Rear Derailleur - 7/8 Speed, Long Cage, Black

KMC Chain 8SP X8-Silver/Grey - X8.93

SHIMANO Unisex Cshg4008140 CS HG400 8 Speed Cassette 11 40T, Silver, 40 Teeth UK

Description

⚙️ Shift into the future of smooth rides — don’t get left behind!

EFFORTLESS UPGRADE - Plug-and-play rear derailleur that fits a broad range of bikes, elevating your ride instantly.
LIGHTWEIGHT DURABILITY - Crafted from robust aluminum, balancing strength and minimal weight at just 381g.
EXTENDED CHAIN CAPACITY - SGS Long Cage design supports up to 45 teeth, perfect for versatile riding styles and steep climbs.
SMOOTH SHIFTING MASTERY - Double Servo mechanism ensures ultra-precise gear changes, conquering any terrain with ease.
WIDE SPEED COMPATIBILITY - Seamlessly works with both 7 and 8-speed drivetrains, maximizing your bike’s adaptability.

The Shimano Acera RD-M3020-SGS Rear Derailleur features advanced Double Servo technology for precise shifting, a long cage design supporting up to 45 teeth chain wrap, and compatibility with 7 and 8-speed drivetrains. Made from durable aluminum and weighing only 381g, it offers a reliable, lightweight upgrade for versatile cycling performance.

Specifications

UPC	192790897738
Color	Black
Size	SGS Long Cage
Material Type	Aluminum
Number of Items	1
Included Components	Rear Derailleur
Batteries Included?	No
Department	Rear Derailleur
Item model number	ERDM30208SGSL
Product Dimensions	17.81 x 2.13 x 10.31 cm; 381 g
ASIN	B0BGFBSYQ3

Have a Question? See What Others Asked

Will this replace stx rc?

Will this replace an sis megarange?

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