There are a few ways to identify your Shimano rear derailleur. One way is to look at the model number. This can usually be found on the back of the derailleur near where it attaches to the frame.
Another way to identify your Shimano rear derailleur is by the shape of the parallelogram. This is the part of the derailleur that the chain runs through. Shimano rear derailleurs have a distinctive shape that is different from other brands.
Finally, you can also look at the logo. Shimano derailleurs have a distinct logo that is different from other brands.
If you’re not sure which model of Shimano rear derailleur you have, there are a few ways to identify it. First, look for the model number on the back of the derailleur. It should be stamped into the metal and be fairly easy to see.
If you can’t find the model number, then look for the Shimano logo. The logo will usually be on the side of the derailleur near the pulleys. Once you’ve found the logo, look for the model number next to it.
If you still can’t find the model number, then you can try contacting Shimano customer service for help.
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How do I know if my derailleur is GS or SS?
If you’re not sure whether your derailleur is GS or SS, there are a few things you can check.
First, check to see if your derailleur has a cage. If it does, it’s almost certainly a GS derailleur.
If it doesn’t, it’s most likely an SS.
Second, take a look at the pulleys on your derailleur. GS derailleurs will have larger pulleys, while SS derailleurs will have smaller ones.
Finally, check the manufacturer’s website or specifications for your particular derailleur model. This should give you a definitive answer.
How do I know what derailleur I need?
Derailleurs are the mechanisms that move the chain from one cog or ring to another on a multi-speed bicycle. The rear derailleur is responsible for moving the chain between the cogs on the rear wheel, while the front derailleur moves the chain between the rings on the front crank.
There are a few different types of derailleurs, but most modern bicycles will have either a Shimano or SRAM derailleur.
These derailleurs come in a variety of sizes, and it is important to choose the correct size for your bicycle.
The first step in choosing the correct derailleur is to know the number of speeds on your bicycle. This can usually be found printed on the frame or on the cogs themselves.
The most common numbers of speeds are 9, 10, 11, and 12.
Once you know the number of speeds, you can narrow down your choices to a few specific models.
How do I know what model Shimano shifter I have?
There are a few ways to determine which model Shimano shifter you have. The first way is to look at the shifter itself. The model number is usually printed on the shifter body.
The second way is to look up the model number in a Shimano parts catalogue. The third way is to take the shifter to a local bike shop and ask them to identify it for you.
If you’re still unsure, you can also contact Shimano customer service.
They should be able to help you identify your shifter model based on the serial number.
How do I know what rear derailleur to buy?
If you’re new to cycling, the prospect of buying a rear derailleur can be daunting. There are so many different types and brands on the market, how can you be sure you’re choosing the right one?
Here are a few things to consider when purchasing a rear derailleur:
1. The number of gears on your bike. The rear derailleur is responsible for shifting the chain between the different cogs on the rear wheel, so you’ll need to make sure it’s compatible with the number of gears on your bike. For example, if you have a 9-speed bike, you’ll need a 9-speed rear derailleur.
2. The type of drivetrain on your bike. There are two main types of drivetrains used on bikes – derailleur systems and hub gears. If your bike has a derailleur system, the rear derailleur is an essential component.

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How to identify shimano brake model
Shimano is a Japanese company that produces bicycle components. Shimano brake models can be identified by their model number, which is stamped on the brake body. The model number consists of two letters followed by two or three digits.
The first letter indicates the brake type:
B – Brake lever
BL – Brake lever and shifter
BR – Brake caliper
The second letter indicates the intended use:
A – Road
M – Mountain
X – Cross
The digits indicate the year of production.
For example, a brake with the model number BR-M985 was produced in 2014.
To identify a Shimano brake model, first locate the model number on the brake body. The model number will be stamped on the body and will consist of two letters followed by two or three digits.
The first letter indicates the brake type, and the second letter indicates the intended use. The digits indicate the year of production.
Conclusion
If you’re not sure which rear derailleur you have, Shimano has an online tool that can help you identify it. Just enter the model number from the label on the derailleur, and the tool will tell you which one it is.