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Shimano 12 Speed Rear Derailleurs

Every day Bikesy finds the best deals on 12 Speed Rear Derailleurs by Shimano across the UK's best bike shops.

Showing 1-48 of 165 results

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Shimano RD-M9100 P-seal ring Rear Mech
Shimano RD-M9100 P-seal ring Rear Mech
Save 57%
WAS £2.37
NOW £1.01
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Shimano GRX RX822 Rear Derailleur
Shimano GRX RX822 Rear Derailleur
Size:MediumM Black
12 Speed 12 speed Cage GS
Save 54%
WAS £119.99
NOW £55.00
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Shimano Deore M6100 Shadow Plus Rear Derailleur
Shimano Deore M6100 Shadow Plus Rear Derailleur
Black
12 Speed 12 speed Long Cage SGS
Save 53%
WAS £64.99
NOW £29.99
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Shimano RD-M9100-GS stabilizer kit unit Rear Mech Spares
Shimano RD-M9100-GS stabilizer kit unit Rear Mech Spares
Save 49%
WAS £19.99
NOW £10.06
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Shimano RD-M7120 SLX 12 Speed Rear Derailleur Shadow+ SGS for Double
Shimano RD-M7120 SLX 12 Speed Rear Derailleur Shadow+ SGS for Double
Black
Save 49%
WAS £84.99
NOW £42.95
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Shimano SLX RD-M7120 12 Speed Shadow+ Double (2x) Rear Mech
Shimano SLX RD-M7120 12 Speed Shadow+ Double (2x) Rear Mech
Black
Save 49%
WAS £84.99
NOW £42.95
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Shimano RDR8150 Ultegra Di2 12 Speed Rear Derailleur
Shimano RDR8150 Ultegra Di2 12 Speed Rear Derailleur
Black
Save 47%
WAS £379.99
NOW £199.00
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Shimano Deore RD-M6100 12 Speed Rear Derailleur, SGS Long Cage
Shimano Deore RD-M6100 12 Speed Rear Derailleur, SGS Long Cage
Save 42%
WAS £64.99
NOW £37.35
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Shimano SLX M7100 Rear Derailleur
Shimano SLX M7100 Rear Derailleur
Black
12 Speed 12 speed Long Cage SGS
Save 42%
WAS £85.00
NOW £48.95
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Shimano RD-R7150 105 Di2 12-Speed Rear Derailleur
Shimano RD-R7150 105 Di2 12-Speed Rear Derailleur
Black
Save 42%
WAS £274.99
NOW £158.00
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Shimano M7100 SLX Rear Derailleur 12 Speed Shadow+ SGS
Shimano M7100 SLX Rear Derailleur 12 Speed Shadow+ SGS
Black
Save 42%
WAS £84.99
NOW £49.00
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Shimano RD-R8150 Ultegra Di2 12 Speed E-tube Rear Derailleur
Shimano RD-R8150 Ultegra Di2 12 Speed E-tube Rear Derailleur
Black
Save 42%
WAS £379.99
NOW £219.00
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Shimano RD-M9100 XTR Rear Derailleur GS 11/12 Speed 10-45T
Shimano RD-M9100 XTR Rear Derailleur GS 11/12 Speed 10-45T
Grey / Black Grey/Black
Save 41%
WAS £214.99
NOW £124.99
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Shimano Ultegra RD-R8150 Di2 12-Speed Rear Derailleur E-tube
Shimano Ultegra RD-R8150 Di2 12-Speed Rear Derailleur E-tube
Save 39%
WAS £379.99
NOW £229.00
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Shimano 105 RD-R7150 Di2 12 Speed Rear Derailleur E-Tube in Black
Shimano 105 RD-R7150 Di2 12 Speed Rear Derailleur E-Tube in Black
Black
Save 38%
WAS £274.99
NOW £169.00
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Shimano SLX M7100 12 Speed Rear Derailleur
Shimano SLX M7100 12 Speed Rear Derailleur
Black
Long Cage
Save 35%
WAS £84.99
NOW £54.99
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Shimano RD-M7120 SLX 12-Speed Shadow+ SGS Rear Derailleur
Shimano RD-M7120 SLX 12-Speed Shadow+ SGS Rear Derailleur
Save 35%
WAS £85.00
NOW £55.00
See More
Shimano RD-M7120 SLA 12-Speed Shadow Rear Derailleur
Shimano RD-M7120 SLA 12-Speed Shadow Rear Derailleur
Black
Save 34%
WAS £84.99
NOW £56.00
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Shimano XT RD-M8100 12-Speed Rear Derailleur Shadow+ GS Medium Cage
Shimano XT RD-M8100 12-Speed Rear Derailleur Shadow+ GS Medium Cage
Size:MediumM Black
GS Cage 45T Max
Save 31%
WAS £109.99
NOW £74.95
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Shimano XT RD-M8100 12-Speed Shadow+ SGS Rear Mech
Shimano XT RD-M8100 12-Speed Shadow+ SGS Rear Mech
Black
Save 31%
WAS £109.99
NOW £74.95
See More
Shimano SLX RD-M7100 12 Speed Shadow+ Rear Mech
Shimano SLX RD-M7100 12 Speed Shadow+ Rear Mech
Black
Save 31%
WAS £84.99
NOW £57.95
See More
Shimano RD-M9100 XTR 12-Speed GS 10-45T/Single Ring Rear Derailleur
Shimano RD-M9100 XTR 12-Speed GS 10-45T/Single Ring Rear Derailleur
Black
Save 30%
WAS £214.99
NOW £149.00
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Shimano Deore M6100 12 Speed Shadow+ Rear Mech
Shimano Deore M6100 12 Speed Shadow+ Rear Mech
Black
Save 30%
WAS £64.99
NOW £44.95
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Shimano SLX M7120 Rear Derailleur
Shimano SLX M7120 Rear Derailleur
Black
12 Speed 12 speed
Save 29%
WAS £85.00
NOW £59.99
See More
Shimano Deore XT Shadow RD-M8120 12-Speed Rear Derailleur
Shimano Deore XT Shadow RD-M8120 12-Speed Rear Derailleur
Black
Save 29%
WAS £109.99
NOW £78.00
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Shimano RD-R7100 105 12-speed Rear Derailleur
Shimano RD-R7100 105 12-speed Rear Derailleur
Black
Save 28%
WAS £59.99
NOW £42.99
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Shimano Deore XT 12 Speed Rear Derailleur
Shimano Deore XT 12 Speed Rear Derailleur
Black
Save 28%
WAS £109.99
NOW £79.00
See More
Shimano 105 RD-R7150 Di2 12 Speed Rear Derailleur
Shimano 105 RD-R7150 Di2 12 Speed Rear Derailleur
BLACK
Save 27%
WAS £274.99
NOW £199.99
See More
Shimano Deore FD-M8100-D XT Front Mech 12-Speed Double Derailleur
Shimano Deore FD-M8100-D XT Front Mech 12-Speed Double Derailleur
Silver
Save 25%
WAS £46.99
NOW £35.00
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Shimano RX822 GRX 12spd Shadow+ Mechanical Rear Derailleur in Grey Long
Shimano RX822 GRX 12spd Shadow+ Mechanical Rear Derailleur in Grey Long
Grey
Save 25%
WAS £119.99
NOW £89.00
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Shimano 105 RD-R7150 Di2 12 Speed Rear Derailleur, E-tube
Shimano 105 RD-R7150 Di2 12 Speed Rear Derailleur, E-tube
Save 23%
WAS £274.99
NOW £210.00
See More
RD-R8150 Ultegra Di2 12-speed rear derailleur E-tube
RD-R8150 Ultegra Di2 12-speed rear derailleur E-tube
Save 22%
WAS £379.99
NOW £294.49
See More
Shimano M9120 XTR Shad+ 2 Speed Rear Derailleur SGS Long Cage for 10-45T/Double Ring
Shimano M9120 XTR Shad+ 2 Speed Rear Derailleur SGS Long Cage for 10-45T/Double Ring
Black
Save 22%
WAS £214.99
NOW £166.99
See More
Shimano Ultegra RD-R8150 Di2 Rear Derailleur
Shimano Ultegra RD-R8150 Di2 Rear Derailleur
Black
12 Speed 12 speed
Save 21%
WAS £379.99
NOW £299.99
See More
Shimano XT RD-M8120 12 Speed Shadow+ Double Rear Mech
Shimano XT RD-M8120 12 Speed Shadow+ Double Rear Mech
Black
Save 21%
WAS £109.99
NOW £85.95
See More
Shimano 105 R7100 Rear Derailleur
Shimano 105 R7100 Rear Derailleur
Black
12 Speed 12 speed
Save 16%
WAS £59.99
NOW £49.99
See More
Shimano Deore M6100 12-Speed Rear Derailleur SGS
Shimano Deore M6100 12-Speed Rear Derailleur SGS
Save 15%
WAS £64.99
NOW £55.00
See More
Shimano RD-M7100 SLX 12-Speed Shadow+ SGS Rear Derailleur
Shimano RD-M7100 SLX 12-Speed Shadow+ SGS Rear Derailleur
Save 15%
WAS £85.00
NOW £72.25
See More
Shimano RD-RX822 GRX 12-Speed Single 51T Rear Derailleur
Shimano RD-RX822 GRX 12-Speed Single 51T Rear Derailleur
Save 15%
WAS £119.99
NOW £101.99
See More
Shimano Dura-Ace R9250 Di2 Rear Derailleur
Shimano Dura-Ace R9250 Di2 Rear Derailleur
Black
12 Speed 12 speed
Save 14%
WAS £700
NOW £599
See More
Shimano XT M8120 Rear Derailleur
Shimano XT M8120 Rear Derailleur
Black
12 Speed 12 speed
Save 13%
WAS £109.99
NOW £95.00
See More
Shimano XT RD-M8120 12 Speed Rear Derailleur SGS, Double
Shimano XT RD-M8120 12 Speed Rear Derailleur SGS, Double
Save 13%
WAS £109.99
NOW £95.00
See More
Shimano RD-M9120 XTR 12 Speed Rear Derailleur
Shimano RD-M9120 XTR 12 Speed Rear Derailleur
Grey
One Size
Save 13%
WAS £214.99
NOW £184.99
See More
Shimano XTR M9100 Rear Derailleur -12 Speed
Shimano XTR M9100 Rear Derailleur -12 Speed
Size:MediumM Black Dark Grey
11-12 Speed 12 speed Cage GS
Save 12%
WAS £214.99
NOW £189.00
See More
Shimano XTR RD-M9100 XTR 12-speed rear derailleur - GS medium cage - for 10-45T/single ring - Grey
Shimano XTR RD-M9100 XTR 12-speed rear derailleur - GS medium cage - for 10-45T/single ring - Grey
Save 12%
WAS £214.99
NOW £188.55
See More
Shimano XTR RD-M9100 XTR 12-speed rear derailleur - SGS long cage - for 10-51T/single ring - Grey
Shimano XTR RD-M9100 XTR 12-speed rear derailleur - SGS long cage - for 10-51T/single ring - Grey
Save 12%
WAS £214.99
NOW £188.55
See More
Shimano Deore M6100 12 speed Shadow+ SGS Rear Derailleur
Shimano Deore M6100 12 speed Shadow+ SGS Rear Derailleur
Save 12%
WAS £64.99
NOW £56.75
See More
Shimano Deore FD-M8100-D XT Front Mech 12-Speed Double Derailleur
Shimano Deore FD-M8100-D XT Front Mech 12-Speed Double Derailleur
Silver
Save 11%
WAS £44.99
NOW £40.00
See More