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Rear Derailleurs
53 results
Rear Derailleurs -commonly known as a Rear Mech. They enable you to shift from one rear sprocket/cog to another effortlessly. It works by a simple cable pulling the rear mech into position as you change gear.
How To Choose - Most bikes will require a rear mech to change gear unless you are riding a single speed bike which will not need one as there are no gears to change into. Bikes will vary in gear speed, for instance your bike may be 9,10 or 11 speed. You will need to choose the right speed rear derailleur to ensure compatibility, this will be stated in the description of the listing. This also applies when choosing the make of your rear mech. If you run shimano shifters you will need a shimano rear mech, cross compatibility can cause problems when shifting.
Cage Length - The length of the cage is determined by how big your gear ratio is on the cassette, or the difference between the front chainrings and the largest gear. The cage helps to keep the tension on the chain consistent. Generally most road bikes with a double chainset and standard cassette will require a short cage, road bikes with a double chainset and a lager ratio cassette will usually take a medium cage. Mountain bikes and triple chainsets will usually need a long or medium cage dependant on the ratio of the cassette. Make sure you check on the listing to what size cassette the derailleur will take. There are always exceptions to the rule so if in doubt contact us and we will be able to help you.
Di2 Rear Derailleurs work in the same way other than it is operated from an electronic cable, therefore eliminating cable stretch, misalignment and provides smoother and more precise shifting. A Di2 rear mech will only work with a Di2 groupset.
How To Choose - Most bikes will require a rear mech to change gear unless you are riding a single speed bike which will not need one as there are no gears to change into. Bikes will vary in gear speed, for instance your bike may be 9,10 or 11 speed. You will need to choose the right speed rear derailleur to ensure compatibility, this will be stated in the description of the listing. This also applies when choosing the make of your rear mech. If you run shimano shifters you will need a shimano rear mech, cross compatibility can cause problems when shifting.
Cage Length - The length of the cage is determined by how big your gear ratio is on the cassette, or the difference between the front chainrings and the largest gear. The cage helps to keep the tension on the chain consistent. Generally most road bikes with a double chainset and standard cassette will require a short cage, road bikes with a double chainset and a lager ratio cassette will usually take a medium cage. Mountain bikes and triple chainsets will usually need a long or medium cage dependant on the ratio of the cassette. Make sure you check on the listing to what size cassette the derailleur will take. There are always exceptions to the rule so if in doubt contact us and we will be able to help you.
Di2 Rear Derailleurs work in the same way other than it is operated from an electronic cable, therefore eliminating cable stretch, misalignment and provides smoother and more precise shifting. A Di2 rear mech will only work with a Di2 groupset.
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Shimano Ultegra RD-R8000 Rear Derailleur - Shadow Design
Offer
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(max discount £30)
(max discount £30)
RRP
£84.99
£55.24
Save:
£30.50
Shimano Dura Ace R9100 Rear Derailleur
RRP
£189.99
£127.49
Save:
£62.50
Shimano Dura Ace Di2 R9150 Rear Derailleur
Offer
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(max discount £30)
(max discount £30)
RRP
£549.99
£378.24
Save:
£171.75
Campagnolo Super Record 12 Speed Rear Derailleur
RRP
£400.99
£340.84
Save:
£60.15
Campagnolo Chorus 11 Speed HO Rear Derailleur
Offer
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(max discount £30)
(max discount £30)
RRP
£217.99
£152.99
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£65.00
Campagnolo Record 12 Speed Rear Derailleur
RRP
£213.99
£181.89
Save:
£32.10
Shimano Ultegra Di2 R8050 - E-Tube Rear Derauilleur - Shadow Design
RRP
£244.99
£152.99
Save:
£92.00
Shimano Ultegra RD-6800 Rear Derailleur 28T - 11 Speed
RRP
£79.99
£42.07
Save:
£37.92
Shimano Tiagra 4700 Bicycle Rear Derailleur
RRP
£39.99
£23.37
Save:
£16.62
Shimano Ultegra RD-6700 Bicycle Rear Derailleur - 10 Speed
RRP
£79.99
£61.19
Save:
£18.80
Campagnolo Potenza 11 Speed HO Rear Derailleur
Offer
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(max discount £30)
(max discount £30)
RRP
£133.99
£93.49
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£40.50
Campagnolo Centaur 11 Speed Rear Derailleur
RRP
£66.99
£46.74
Save:
£20.25
Campagnolo Record 10 Speed Rear Derailleur - Black
RRP
£289.99
£182.74
Save:
£107.25
Tacx Standard T4000 Bicycle Jockey Wheels
Offer
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(max discount £30)
(max discount £30)
RRP
£9.99
£8.49
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£1.50
Shimano RD-M771 XT Rear Derailleur - Top Normal
RRP
£74.99
£57.37
Save:
£17.62
SRAM Red Aero Glide Rear Derailleur - 2012
Offer
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(max discount £30)
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RRP
£257.00
£195.49
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£61.51
SRAM Force Road Rear Mech WiFli (Medium Cage)
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(max discount £30)
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RRP
£113.00
£87.54
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£25.46
Tacx Standard T4050 Bicycle Jockey Wheels - Shimano
Offer
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(max discount £30)
(max discount £30)
RRP
£9.99
£7.64
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£2.35
Shimano RD-6870 Ultegra Di2 11-Speed Rear Derailleur
RRP
£224.99
£127.49
Save:
£97.50
Campagnolo Super Record 11 Speed Ceramic Jockey Wheels
Offer
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(max discount £30)
(max discount £30)
RRP
£59.99
£45.89
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£14.10
SRAM Apex Rear Derailleur
Offer
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(max discount £30)
(max discount £30)
RRP
£48.00
£36.71
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£11.29
Shimano RD-M981 XTR 10-Speed Shadow Design Rear Derailleur- Top Normal
RRP
£124.99
£95.62
Save:
£29.37
Shimano RD-M781 XT 10-Speed Shadow Design Rear Derailleur - Top Normal
RRP
£59.99
£45.89
Save:
£16.45
Shimano RD-T8000 XT Trekking Rear Derailleur - SGS Long Cage - 10-Speed
RRP
£69.99
£53.54
Save:
£16.45
SRAM Apex WiFli Rear Derailleur - Black
Offer
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(max discount £30)
(max discount £30)
RRP
£54.00
£36.71
Save:
£17.29
Tacx Stainless Bearing T4020 Bicycle Jockey Wheels
Offer
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(max discount £30)
(max discount £30)
RRP
£14.99
£12.23
Save:
£2.76
Campagnolo Xenon 10 Speed Rear Derailleur - Black
RRP
£42.99
£29.74
Save:
£13.25
Campagnolo Chorus EPS 11 Speed Rear Derailleur - Short Cage
Offer
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(max discount £30)
(max discount £30)
RRP
£388.99
£297.58
Save:
£91.41