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Bicycle Rear Derailleurs

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Do you want to know more about rear derailleurs?

Derailleurs are one of the most important bicycle components, as they are what allow us to change gears and improve the performance of the bicycle. The rear derailleur moves the chain from sprocket to sprocket on the rear wheel, while the front derailleur changes the position of the chain on the chainrings. This allows you to have a variety of gears to face the different ups and downs of the route.

It is common to have to adjust the front derailleur, since it can often become unadjusted due to bumps, wear or simply because it has been replaced with a new one and this has to be adjusted with tools, because if it is not adjusted properly the gears cannot be changed properly. Badly adjusted derailleurs can be caused by issues such as a faulty chain, an excess of oxide or simply dirt in some part of the cable housing.

The rear derailleur is located in the rear wheel and is somewhat more complicated to adjust than the front derailleur. This system is what moves the chain’s position on the cassette allowing the driving force to be increased or decreased.

In cycling in order for the gears to be changed correctly, as well as adjusting the derailleurs, the gear cable also has to be properly adjusted, since it can become loosened and needs tightened.


Opinions featured in Bicycle Rear Derailleurs

UNION GH-063 Derailleur Hanger Compatible With B'Twin, Decathlon, Rockrider + Other Brands
Excellent
Delivered next day and it is excellent
, the
UNION GH-063 Derailleur Hanger Compatible With B'Twin, Decathlon, Rockrider + Other Brands
Derailleur Hanger
So far so good . Used on one outing and no issues so far
, the
Shimano DEORE M592 Shadow Long Cage 9-Speed Rear Derailleur
Love the shadow profile
Looks great, does the job. Excellent value
, the
Shimano DEORE M592 Shadow Long Cage 9-Speed Rear Derailleur
Great Value
Good quality and a lot cheaper than local shops
, the
Shimano XT 1x11 Drivetrain 11/47 32T Chainring Groupset
Unbeatable quality
Very happy with this bit of kit
, the
Shimano XT 1x11 Drivetrain 11/47 32T Chainring Groupset
excellent quality
top spec groupset at a great price
, the
SunRace Index 7-Speed Long Cage Rear Derailleur
acceptable quality for the low price
not great, not the worst
, the
Shimano Claris R2000 8-Speed Rear Derailleur Low Sprocket Max 32 Teeth
Good price
Met my requirements for a replacement rear mech
, the
SRAM NX Eagle Pulleys
Great easy replacement
Quality is fine bought as a replacements for one lost jocky wheel
, the
Shimano XT M8100 12-Speed Shadow+ SGS Direct Rear Derailleur
Works with Sram
Very nice bit of kit.
, the
Shimano Tourney TY500 6 / 7-Speed Rear Derailleur
Good Quality
I had an older bike so it took a bit of fiddling to get the unit to function properly but all is good now
, the
SRAM NX Eagle Pulleys
Original sram parts
Original parts well packaged and as described
, the
Sheaves + SRAM Internal Cage for GX Eagle Shift
Good replacement part
Official Sram spare part. Very useful if required.
, the

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