Change derailleur and shifter in an old road bike reconverted to hybrid - Project Sports
Nederlands | English | Deutsch | Türkçe | Tiếng Việt

Project Sports

Questions and answers about sports

Change derailleur and shifter in an old road bike reconverted to hybrid

5 min read

Asked by: Amy Jorgenson

Do shifters and derailleurs have to match?

As a general rule of thumb, it’s best not to mix and match drivetrain components from different brands. While things such as cranks, chains and cassettes are mostly inter-compatible between brands, generally speaking, shifters and derailleurs aren’t.

Can you mix shifter and derailleur?

In many instances, it is possible to mix different levels of shifters and derailleurs from the same brand (e.g. Dura-Ace/Ultegra/105; Red/Force/Rival; Super Record/Record/Chorus), however it’s not safe to assume that this will always be the case.

Can you use any shifters with any derailleurs?

No, different maker or different model with different number of “speed” shifters have different pull ratio (i.e. the length of cable pulled by a single shift). Usually it’s safe to use different model with same number of gears from the same maker.

Can I upgrade my derailleur?

The number of gears supported changes



The higher the grade of Shimano rear derailleur, the more gears it can handle. For both road bikes and MTBs, 12-speed is the maximum number of gears supported. Of course, upgrading between 11-speed derailleurs will not change the number of gears supported.

Do all derailleurs fit all bikes?

No, bike derailleurs are not universal. A derailleur that works with one bike may not work with another bike based on factors such as the cage length. Check the difference between the smallest and largest cogs and also the chainring size to determine the derailleur compatibility.

Can I change my bike shifter?

Although reasonably durable, shifters do eventually wear out. If you’re comfortable with basic hand tools and mechanical concepts, then replacing a bicycle gear’s shifters is not at all that difficult.

Can you use a SRAM derailleur with Shimano shifters?

The SRAM rear derailleur (mech) will not work with a Shimano shifter as is; the cable pull and shift activation ratios are not the same between the two systems.

Can I use 11 speed derailleur with 10-speed shifter?

Can An 11-speed Derailleur Work With a 10-speed Cassette and Shifter? Condensed Answer: Shimano’s 11-speed derailleurs have a different rear shift ratio than 10-speed derailleurs and are therefore not compatible with 10-speed indexed shifters.

Can I use a MTB derailleur on a road bike?

Since road bikes use higher gears, many road derailleurs are too short to cover a wide range 10-speed MTB cassette. Or in other words, the cassette may be compatible, but the MTB version will require an MTB derailleur too.

How do I know what derailleur I need?

When buying a new rear derailleur be sure to match it with your drivetrain ‘speed’. 10-speed drivetrains use narrower chains than 9-speed so you’ll need a mech to match. Most rear mechs are made of a polymer and alloy mix but you’ll find carbon fibre in top-end models to shave even more weight.

How do I know what model Shimano shifter I have?

The shifter can be identified by model number, which is stamped on the plastic perch (under the rubber hood).

Can I use a 9 speed shifter with a 7 speed cassette?

If you used a 7 speed cassette, with a 9 speed shifter and 7 speed derailleur you would not pull enough cable and the shifts will get mangled.

How long should a derailleur last?

Good quality rear derailleur can last between 3 to 5 years, when unbranded or low-quality ones can last for 2 years, no matter what the durability of the rear derailleur the jockey wheel will wear after time and it can be replaced very cheaply with new ones, on the other hand, front derailleur can last almost

How do I know if I have a long or short cage derailleur?


Quote from video: So look for those markings on your derailleur. If you can't eyeball it to see if it's long or short again short is SS medium GS long is s GS.

How do I know if my rear derailleur is worn out?

Quote from video: Похожие запросы

Can I use 11 speed derailleur with 10 speed shifter?

Can An 11-speed Derailleur Work With a 10-speed Cassette and Shifter? Condensed Answer: Shimano’s 11-speed derailleurs have a different rear shift ratio than 10-speed derailleurs and are therefore not compatible with 10-speed indexed shifters.

Are SRAM derailleurs compatible with Shimano shifters?

The SRAM rear derailleur (mech) will not work with a Shimano shifter as is; the cable pull and shift activation ratios are not the same between the two systems.

Can you mix and match Shimano components?

It is possible to mix and match as long as you get components from the same generation. For example: 9000 Dura Ace, 6800 Ultegra, and 5800 105 are all cross compatible. Each have 11-speeds in the rear, use the same cable pull per shift and use the same front derailleur design.

Will a 9 speed shifter work on a 7 speed cassette?

If you used a 7 speed cassette, with a 9 speed shifter and 7 speed derailleur you would not pull enough cable and the shifts will get mangled. If you are currently on 7 Speeds, this means you have a 7 speed wheel that will most likely NOT take a 9 speed cassette.

Will a 9 speed rear derailleur work with 7 speed?

Can I use a 9-speed derailleur on a 7-speed cassette? The answer is yes because the rear shift ratio of 9-speed and 7-speed derailleurs is the same if you stay within the same brand.

Will a 9 speed rear derailleur work with an 8 speed cassette?

yes you can use the derailer on the 8 speed cassette. The major difference between 8 and 9 speed is indexing. So for an 9 speed cassette you would need 9 speed shifters.