12 Speed Bicycle Rear Derailleurs
The number of speeds should correspond to the number of cogs on the cassette.
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Showing 51 products:
SRAM GX Eagle Rear Derailleur - 12-Speed, Long Cage, 52t Max, Lunar
BuyPART NUM 734919
The GX Eagle Rear Derailleur gets the job done with a thoughtfully designed cage architecture that improves chain management. Mounting system … read more
popular
SRAM 00.7518.137.000
Ships Free$16 offretail $135.00 your price $118.80 + ships free
BuyPART NUM 734919 
Campagnolo Super Record WRL Rear, 12sp, Mid, CRBN
BuyPART NUM 155609
The new Super Record Wireless rear derailleur makes the most of Campagnolo state-of-the-art technology to guarantee maximum shifting performance Thanks … read more
$139 offretail $899.95 your price $760.00 + ships free
BuyPART NUM 155609 
Sram Force XPLR eTAP AXS D2, 12sp, Med, BLK/IR BuyPART NUM 970108
A dedicated 1x-specific unit designed for use with a 10-44T or 10-36T cassette, it makes for an uncluttered drivetrain that takes on pavement and singletrack … read more
your price $377.00 + ships free
BuyPART NUM 970108 
SRAM GX Eagle T-Type AXS Rear Derailleur - 12-Speed, 52t Max, (Battery Not Included), Wheel Axle Mount, Steel Cage, Black BuyPART NUM 247159
The GX Eagle T-Type AXS(tm) 12-Speed derailleur is a lesser version of nothing. It delivers everything an Eagle Transmission derailleur possibly can … read more
your price $400.00 + ships free
BuyPART NUM 247159 
Campagnolo Chorus Rear Derailleur - 12-Speed
5 of 5
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5 of 5 stars
( 1 review )
BuyPART NUM 660575
The Campagnolo Chorus 12-speed rear derailleur features 3D Embrace technology and 12-tooth pulley wheels making it suitable for all cassettes as the distance … read more
5 of 5
( 1 )
5 of 5 stars
( 1 review )
Two remaining at this price$19 offretail $178.95 your price $159.27 + ships free
BuyPART NUM 660575 
Sram X0 Eagle T-Type AXS Long Cage BuyPART NUM 780988
Mounts around the wheel axle itself, contacting the cassette directly with a first-of-its-kind Hangerless Interface An overload clutch boosts … read more
your price $550.00 + ships free
BuyPART NUM 780988 
SRAM Rival XPLR eTap AXS Rear Derailleur - 12-Speed, 44t Max, Black, D1 BuyPART NUM 966264
If your ride doesn’t feel complete until you get a little dirt on your tires, you know the importance of capable components that can tackle anything. … read more
$36 offretail $300.00 your price $264.00 + ships free
BuyPART NUM 966264 
SRAM X01 Eagle AXS Rear Derailleur, 12 Speed, Black BuyPART NUM 927671
The Eagle AXS derailleur is the brain of the whole AXS system Shorter cage for 10mm more ground clearance, with more chain wrap on the … read more
Lowest Price$48 offretail $538.00 your price $489.99 + ships free
BuyPART NUM 927671 
SRAM, Apex XPLR AXS D1, Rear Derailleur, Speed: 12, Black BuyPART NUM 659081
AXS enabled for easy setup, personalization, and reliability 1x specific for use with 11-44T XPLR, 10-44T XPLR, and 10-36T cassettes … read more
$33 offretail $275.00 your price $242.00 + ships free
BuyPART NUM 659081 
SRAM, GX1 Eagle AXS, Rear Derailleur, Speed: 12, Grey BuyPART NUM 746382
AXS enabled componentry software that makes it possible to both program and personalize Overload Clutch protection Compatible with … read more
your price $390.00 + ships free
BuyPART NUM 746382 
SRAM NX Eagle 12-Speed Rear Derailleur, Black BuyPART NUM 543940
The NX Eagle rear derailleur features the proven SRAM 1x-specific X-HORIZON design. The larger, 14-tooth X-SYNC lower pulley easily facilitates 11- to … read more
$13 offretail $115.00 your price $101.20 + ships free
BuyPART NUM 543940 
SRAM X01 Eagle B2 Rear Derailleur, 12 Speed, Lunar BuyPART NUM 601107
Updated cage provides better chain retention and more precise shifts. Compatible with 10-50t and 10-52t cassettes. Item Specifications … read more
$15 offretail $214.00 your price $198.32 + ships free
BuyPART NUM 601107 
Campagnolo Super Record 12 Speed Rear Derailleur, Medium, Carbon BuyPART NUM 324213
12 speed Super Record rear derailleur Unidirectional carbon outer cage and carbon fibre-reinforced technopolymer body Only one … read more
$13 offretail $481.95 your price $467.99 + ships free
BuyPART NUM 324213 
SRAM XX1 Eagle AXS Rear Derailleur - 12 Speed, Black BuyPART NUM 146562
The SRAM XX1 Eagle AXS 12-speed rear derailleur is trail ready with AXS enabled componentry that makes personalization of the motor-driven derailleur … read more
$90 offretail $753.00 your price $662.64 + ships free
BuyPART NUM 146562 
Shimano XTR RD-M9100-GS Rear Derailleur - 12 Speed, Medium Cage, Gray, With Clutch
BuyPART NUM 637658
Shimano XTR M9100 rear derailleur features decreased rear derailleur tension at low gear position, to prevent high chain tension at low gear. … read more
your price $273.99 + ships free
BuyPART NUM 637658 
Shimano XT RD-M8100-GS Rear Derailleur - 12-Speed, Medium Cage, Black BuyPART NUM 718427
Deore XT RD-M8100 Rear Derailleur Rear Derailleur Mount Type: Shimano Rear Direct Mount, 10x1 Standard Rear Der/Shifter Compatibility: Shimano Mountain … read more
your price $121.99
BuyPART NUM 718427 
SRAM XX1 Eagle B2 Rear Derailleur, 12 Speed, Black BuyPART NUM 197412
Updated cage provides better chain retention and more precise shifts. Compatible with 10-50t and 10-52t cassettes. Item Specifications … read more
$38 offretail $323.00 your price $284.24 + ships free
BuyPART NUM 197412 
Sunrace RD-MZ600 Rear Derailleur, 12sp, Mid, Blk BuyPART NUM 683442
12 speed rear derailleur for wide range 1x drivetrains Integrated chain stabilizer Alloy cage with forged alloy links Model: … read more
your price $99.99 + ships free
BuyPART NUM 683442 
Campagnolo Super Record EPS 12s Rear Derailleur, 12-Speed, Carbon BuyPART NUM 769024
The Campagnolo Super Record EPS 12 speed rear derailleur offers improved shifting performance with a trajectory curve that is optimized for 11-29 and … read more
$197 offretail $746.89 your price $549.00 + ships free
BuyPART NUM 769024 
Shimano Deore RD-M6100-SGS Rear Derailleur - 12-Speed, Long Cage, Black BuyPART NUM 674127
The Shimano RD-M6100 Rear Derailleur provides efficient and smooth shifting for Deore M6100 12-speed drivetrains. Features the Shadow RD+ chain … read more
your price $64.99
BuyPART NUM 674127 
"Incremental enhancements. Perpetual improvements. Revolutionary Innovation. When advancements are continuously made to every attribute of every component, the result is overall performance that is simply second to none. And to real cycling enthusiasts, there is nothing more gratifying then achieving the ultimate ride. And the best part is we just keep making it better. This is what SRAM is all about."
"Campagnolo puts all of its professionalism and expertise into the manufacture of its components in Via della Chimica plant in Vicenza. All production takes place exclusively within Campagnolo's own plants, so that product development can be a fully integrated part of the process. Every step in the process, from design and engineering to testing and industrialisation, takes place within Campagnolo facilities. Campagnolo even develops its own tools, machinery and technology so that it can produce only the very best components and wheels for racing bicycles."
"Shimano practices good local citizenship, pursues continued access to those areas that are enjoyed by outdoor enthusiasts, and is committed to minimizing our impact on the environment."
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The number of speeds should correspond to the number of cogs on the cassette.
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