Bike Rear Mech

Bike Rear Mechs at Swinnerton CyclesPrecise, reliable gear changes start with a quality rear derailleur. Our bike rear mech collection at Swinnerton Cycles covers road, MTB, and gravel options from all major groupset manufacturers — from entry-level mechanical systems to top-tier wireless electronic derailleurs. The rear derailleur is one of...

Bike Rear Mechs at Swinnerton Cycles

Precise, reliable gear changes start with a quality rear derailleur. Our bike rear mech collection at Swinnerton Cycles covers road, MTB, and gravel options from all major groupset manufacturers — from entry-level mechanical systems to top-tier wireless electronic derailleurs. The rear derailleur is one of the most critical components in your drivetrain, and choosing the right one for your cassette range, frame, and groupset is essential. We stock rear mechs from Shimano, SRAM, Campagnolo, and MicroSHIFT. Explore Road Rear Mechs, MTB Rear Mechs, Gravel Rear Mechs, and Rear Mech Spares.

Popular Rear Mechs

Road Rear Mech

Road Rear Mech
MTB Rear Mech

MTB Rear Mech
Gravel Bike Rear Mech

Gravel Bike Rear Mech
Jockey Wheels

Jockey Wheels
Rear Mech Spares

Rear Mech Spares
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  • CeramicSpeed OSPW Replacement Pulley Wheels ALPHA Disc 15 + 19T

      CeramicSpeed OSPW ALPHA Disc Replacement Pulley Wheels 15T & 19T for SRAM AXS - Black

      Upgrade your drivetrain with the CeramicSpeed OSPW Replacement Pulley Wheels ALPHA Disc 15 + 19T. Designed for precision and durability, these spare jockey wheels ensure smooth shifting and optimal performance for your CeramicSpeed OSPW system. Crafted from high-quality materials, they reduce friction and enhance...
      £302.39
      £319.99
      £302.39
      Save £17.60
      • Black
      • Silver
    • CeramicSpeed SRAM 12s AXS Road Coated Pulley WheelCeramicSpeed SRAM 12s AXS Road Coated Pulley Wheel (Black) | Swinnerton Cycles

        CeramicSpeed SRAM 12s AXS Road Coated Pulley Wheel for SRAM Red AXS Systems - Black

        Experience unparalleled shifting precision with the CeramicSpeed SRAM 12s AXS Road Coated Pulley Wheel. Featuring a 12-tooth narrow-wide design, this pulley ensures optimal chain engagement, enhancing your drivetrain’s efficiency both on and off the wheel. Hand-built in Denmark, this component is crafted from high-quality...
        £227.33
        £339.99
        £227.33
        Save £112.66
        • Black
      • CeramicSpeed OSPW RS replacement cage for Shimano 9250/8150 derailleur with bolts, high-performance cycling component.

          CeramicSpeed OSPW RS Replacement Cage for Shimano 9250/8150 Derailleur with Bolts

          Upgrade your Shimano 9250/8150 derailleur with the CeramicSpeed OSPW RS Replacement Cage, designed for smooth, reliable performance. Crafted for durability, it ensures optimal shifting and extends your drivetrain's lifespan. Easy to install, this replacement cage comes complete with bolts, making maintenance hassle-free and efficient....
          £203.16
          £214.99
          £203.16
          Save £11.83
        • CeramicSpeed OSPW RS Repalcement Cage TEAM Edition for SRAM Red/Force AXS

            CeramicSpeed OSPW RS TEAM Edition Cage for SRAM Red & Force AXS Derailleurs - Black

            The CeramicSpeed OSPW RS cage TEAM edition for SRAM Red/Force AXS is a premium replacement component designed to maintain peak performance of your drivetrain. Crafted for durability and precision, this cage ensures smooth and efficient gear changes, enhancing your cycling experience. It includes all...
            £203.16
            £214.99
            £203.16
            Save £11.83
            • Black
          • CeramicSpeed OSPW RS 5-Spoke replacement metal bushings for bicycle drivetrain components, durable and precision-engineered.

              CeramicSpeed OSPW RS 5-Spoke Replacement Metal Bushings for Bicycle Drivetrain

              Enhance the performance of your bicycle’s drivetrain with the CeramicSpeed OSPW RS 5-Spoke Replacement Metal Bushings. Expertly engineered for precision and durability, these metal bushings are designed to fit perfectly with the OSPW RS 5-spoke jockey wheels, ensuring smooth rotation and optimal alignment of...
              £7.55
              £7.99
              £7.55
              Save £0.44
            • CeramicSpeed OSPW Aero ALPHA pulley system for Shimano 9250/8150 derailleurs in black, high-performance cycling components.

                CeramicSpeed OSPW Aero ALPHA Pulley System for Shimano 9250/8150 Derailleurs Black

                The CeramicSpeed OSPW Aero ALPHA system is engineered specifically for Shimano 9250/8150 derailleurs, delivering unparalleled efficiency and aerodynamic performance. Featuring the patent-pending ADR bearing protection and quiet ALPHA disc pulleys with a composite tooth profile, this upgrade ensures smoother transmission and reduced noise during...
                £581.16
                £614.99
                £581.16
                Save £33.83
              • BBB BDP-09 RollerBoys 13T jockey wheels in black for Shimano 12-speed MTB groupsets, showing close-up of the component.Black BBB BDP-09 RollerBoys 13T jockey wheels for Shimano 12-speed MTB groupsets, showing the durable component with gear teeth.

                BBB BDP-09 RollerBoys 13T Jockey Wheels Black for Shimano 12-Speed MTB Groupsets - Black

                The BBB BDP-09 RollerBoys Jockey Wheels 13T Black are precision-engineered components designed to enhance the performance and longevity of your rear derailleur. Crafted from Grivory EMS composite material infused with 40% glass fibre, these jockey wheels offer exceptional strength and durability while maintaining a...
                £15.11
                £19.99
                £15.11
                Save £4.88
                • Black
              • BBB RollerBoys Jockey Wheels 12T SRAM [BDP-10]BBB RollerBoys Jockey Wheels 12T SRAM [BDP-10]

                BBB BDP-10 RollerBoys 12T SRAM 12-Speed Jockey Wheels for Road Bikes - Black

                The BBB BDP-10 RollerBoys 12T SRAM Jockey Wheels are engineered for cyclists seeking precise and reliable shifting performance. Crafted with high-quality 12 x 12T CrMo derailleur pulleys, these jockey wheels offer exceptional durability and smooth operation. The use of a high-performance composite material from...
                £15.11
                £19.99
                £15.11
                Save £4.88
                • Black
              • BBB RollerBoys Jockey Wheels 11T x25 Pairs [BDP-02OEM]BBB RollerBoys Jockey Wheels 11T x25 Pairs [BDP-02OEM]

                BBB BDP-02 RollerBoys OEM 11T Jockey Wheels 25 Pairs for Shimano SRAM Campagnolo - Black

                Discover the BBB BDP-02 RollerBoys OEM Jockey Wheels, designed to enhance your bike’s rear derailleur performance with precision and durability. Each box contains 25 pairs of 11T jockey wheels, crafted from high-quality Grivory EMS composite material with a 40% glass-fibre blend. This advanced construction...
                £202.37
                £374.75
                £202.37
                Save £172.38
                • Black
              • BBB RollerBoys Jockey Wheels 11+13T [BDP-08]BBB RollerBoys Jockey Wheels 11+13T [BDP-08]

                BBB BDP-08 Rollerboys Jockey Wheels 11-13T Black for 11-Speed Shimano GRX - Black

                The BBB BDP-08 Rollerboys Jockey Wheels are designed to enhance your bike’s rear derailleur performance with precision and durability. Crafted from high-quality composite material provided by EMS Swiss, enriched with 40% glass-fibre, these jockey wheels promise exceptional strength and longevity. Their sealed bearings with...
                £18.14
                £23.99
                £18.14
                Save £5.85
                • Black
              • BBB BDP-20 RollerBoys Ceramic 12T SRAM jockey wheel for 12-speed road groupsets, showing the black ceramic bicycle component.BBB BDP-20 RollerBoys Ceramic 12T SRAM jockey wheel for 12-speed road bike groupsets, showing the high-performance ceramic construction.

                BBB BDP-20 RollerBoys Ceramic 12T SRAM Jockey Wheel for 12-Speed Road Groupsets - Black

                Upgrade your bike’s transmission with the BBB BDP-20 RollerBoys Ceramic 12T SRAM Jockey Wheels, engineered for smooth and efficient shifting. Crafted from high-performance EMS Swiss composite material blended with 40% glass fibre, these jockey wheels are designed to withstand rigorous use while maintaining lightweight...
                £22.68
                £29.99
                £22.68
                Save £7.31
                • Black
              • Enduro Bearings Zero Ceramic Jockey Wheels for Shimano, SRAM, and Campagnolo drivetrain components, showing detailed close-up.Enduro Bearings Zero ceramic jockey wheels for Shimano, SRAM, and Campagnolo drivetrain components, shown in the image.

                  Enduro Bearings Zero Ceramic Jockey Wheels for Shimano, SRAM & Campagnolo Drivetrains - Red

                  Enduro Bearings' Zero Ceramic Jockey Wheels are engineered for cyclists who demand peak drivetrain performance and weight savings. Featuring advanced grade 3 ceramic bearings made from Silicon Nitride (Si3N4), these jockey wheels offer tolerances more than twice as precise as standard ABEC 3 bearings....
                  from £114.06
                  £129.99
                  from £114.06
                  Save £15.93
                  • Red
                  • Black
                  • Blue
                • Hope S689 Sealed Roller BearingHope S689 Sealed Roller Bearing | Swinnerton Cycles

                    Hope S689 Sealed Roller Bearing for Bicycle Rear Mech Jockey Wheels

                    The Hope S689 Sealed Roller Bearing offers smooth and reliable performance for your bike's transmission. Designed to withstand tough riding conditions, it ensures durability and consistent operation. This component is essential for maintaining optimal drivetrain efficiency. Its sealed design protects against dirt and moisture,...
                    £3.40
                    £3.40
                  • Sram Rear Derailleur Gx Upgrade Kit - Convert Mechanical Eagle 90 And 70 To Electronic SRAM Rear Derailleur Gx Upgrade Kit - Convert Mechanical Eagle 90 And 70 To Electronic : BLACK | Swinnerton Cycles

                      SRAM GX Eagle Rear Derailleur Upgrade Kit for Mechanical Eagle 90 & 70 to Electronic Black - Black

                      Elevate your mountain biking experience by transforming your mechanical Eagle 90 or 70 derailleur into a cutting-edge electronic system with the SRAM Rear Derailleur GX Upgrade Kit. This kit seamlessly integrates into the AXS Ecosystem, offering wireless connectivity that enhances precision and control. By...
                      £508.73
                      £570.00
                      £508.73
                      Save £61.27
                      • Black
                    • Shimano RD-RX822 GRX 12-speed rear derailleur, Shadow max 51T for singleShimano RD-RX822 GRX 12-speed rear derailleur, Shadow max 51T for single

                      Shimano GRX RD-RX822 12-Speed Shadow+ Rear Derailleur 10-51T Single Chainset - Grey

                      The Shimano GRX RD-RX822 is a 12-speed rear derailleur crafted specifically for gravel enthusiasts who demand precision and reliability. Featuring a low-profile Shadow Plus design, it ensures fast, smooth shifts while minimizing chain bounce on rough terrain, thanks to its innovative chain stabilizing switch....
                      £110.16
                      £119.99
                      £110.16
                      Save £9.83
                      • Grey
                    • Shimano RD-RX822 GRX 12-speed rear derailleur, Shadow max 45T for singleShimano RD-RX822 GRX 12-speed rear derailleur, Shadow max 45T for single

                      Shimano GRX RD-RX822 12-Speed Shadow+ Rear Derailleur, Max 45T Single Chainset - Grey

                      The Shimano GRX RD-RX822 is a 12-speed rear derailleur engineered specifically for gravel riders who demand precision and durability. Its Shadow+ low-profile design not only offers a sleek look but also ensures fast, accurate shifting even on the roughest terrain. Built with cold forged...
                      £110.16
                      £119.99
                      £110.16
                      Save £9.83
                      • Grey
                    • Shimano XTR RD-M9250 Di2 wireless 12-speed rear derailleur GS Hyperglide mountain bike component on a bike.Shimano XTR RD-M9250 Di2 wireless 12-speed rear derailleur for mountain biking with GS cage and Hyperglide technology.

                      Shimano XTR RD-M9250 Di2 Wireless 12-Speed Rear Derailleur GS Hyperglide MTB - Black

                      Experience unparalleled shifting precision and durability with the Shimano XTR RD-M9250 Di2 Wireless 12-speed rear derailleur. Designed specifically for mountain biking, this component combines innovative wireless technology with a robust build to enhance your ride. The derailleur features a compact GS cage with Hyperglide...
                      £541.89
                      £549.99
                      £541.89
                      Save £8.10
                      • Black
                    • Shimano Deore RD-M6260 Di2 12-speed wired rear derailleur with Hyperglide SGS for MTB and e-bike components.Shimano Deore RD-M6260 Di2 12-speed rear derailleur with Hyperglide SGS for mountain bikes and e-bikes, mounted on bike frame.

                      Shimano Deore RD-M6260 Di2 Wired 12-Speed Rear Derailleur HYPERGLIDE SGS for MTB & E-Bike - Black

                      The Shimano Deore RD-M6260 Di2 Wired rear derailleur is engineered to deliver exceptional performance and durability for mountain bikers and e-bike enthusiasts. Designed specifically for 12-speed HYPERGLIDE drivetrains, this rear mech combines precision wired shifting with robust construction to ensure reliable operation on demanding...
                      £348.95
                      £379.99
                      £348.95
                      Save £31.04
                      • Black
                    • Shimano RD-M6260 Di2 Wired Deore 11-spd rear mech, LINKGLIDEShimano RD-M6260 Di2 Wired Deore 11-spd rear mech, LINKGLIDE

                      Shimano Deore RD-M6260 Di2 Wired 11-Speed LINKGLIDE Rear Derailleur SGS MTB - Black

                      The Shimano Deore RD-M6260 Di2 Wired rear derailleur is engineered for mountain biking enthusiasts seeking precision and durability. Designed specifically for 11-speed LINKGLIDE drivetrains, this rear mech delivers seamless and accurate shifting, enhancing your ride experience on rugged trails. Its wired connection integrates flawlessly...
                      £341.99
                      £379.99
                      £341.99
                      Save £38.00
                      • Black
                    • Shimano Rd-4700 Tiagra 10-Speed Rear Derailleur Rear MechShimano Rd-4700 Tiagra 10-Speed Rear Derailleur Rear Mech

                      Shimano RD-4700 Tiagra 10-Speed Rear Derailleur for Road Bikes Rear Mech

                      The Shimano RD-4700 Tiagra 10-Speed Rear Derailleur combines professional-grade performance with exceptional value, designed specifically for road cyclists seeking reliable and smooth gear changes. Its wide link design enhances rigidity and durability, ensuring long-lasting service with minimal maintenance. The lightweight alloy body and outer...
                      from £39.46
                      £44.99
                      from £39.46
                      Save £5.53
                    • Campagnolo Super Record 12X Wireless Batteries BatteryCampagnolo Super Record 12X Wireless Batteries Battery

                      Campagnolo Super Record 12X Wireless Batteries for Rear Mech & Transmission

                      Experience unparalleled performance and convenience with the Campagnolo Super Record 12X Wireless Batteries, designed to power your rear mech and transmission with reliable efficiency. These batteries boast a long-lasting charge that supports up to 750km of riding, ensuring you stay on the road longer...
                      from £87.00
                      £105.00
                      from £87.00
                      Save £18.00
                    • Shimano Rd-6800 Guide And Tension Pulley Set Spares & AccessoriesShimano Rd-6800 Guide And Tension Pulley Set Spares & Accessories | Swinnerton Cycles

                        Shimano Ultegra RD-6800 Guide & Tension Pulley Set Replacement Spares

                        Upgrade your Ultegra rear derailleur with the Shimano RD-6800 Guide and Tension Pulley Set. Designed specifically for RD6800 and RD6870 models, this genuine Shimano replacement ensures smooth, precise shifting every ride. Regularly replacing pulley wheels helps maintain optimal transmission performance and extends the life...
                        £20.99
                        £20.99
                      • Shimano RD-R9100 rear derailleur inner plate replacement part for smooth shifting on bicycle components.Shimano RD-R9100 rear derailleur inner plate replacement part for smooth shifting on bike components.

                          Shimano RD-R9100 Rear Derailleur Inner Plate Replacement Part for Smooth Shifting

                          The Shimano Spares RD-R9100 inner plate ensures precise shifting performance. This genuine replacement part maintains your rear mech's reliability and smooth operation. Designed specifically for the RD-R9100, it fits seamlessly to keep your transmission running at its best. Trust Shimano quality for durable and...
                          £47.25
                          £49.99
                          £47.25
                          Save £2.74
                        • Shimano RD-R9100 rear derailleur outer plate and stopper pin replacement parts for bike component maintenance.Shimano RD-R9100 rear derailleur outer plate and stopper pin replacement components for bike gear shifting.

                            Shimano RD-R9100 Rear Derailleur Outer Plate and Plate Stopper Pin Replacement Parts

                            Ensure smooth and reliable shifting with the Shimano RD-R9100 outer plate and plate stopper pin. Designed as an authentic replacement part, it maintains optimal performance of your rear mech. This genuine Shimano component is essential for precise transmission function, helping extend the life of...
                            £80.33
                            £84.99
                            £80.33
                            Save £4.66
                          • Shimano RD-R9100 rear derailleur stroke adjusting screws and plate replacement components on a white background.Shimano RD-R9100 rear derailleur stroke adjusting screws and plate replacement parts for bike component repair.

                              Shimano RD-R9100 Rear Derailleur Stroke Adjusting Screws & Plate Replacement Parts

                              Ensure precise rear derailleur performance with the Shimano Spares RD-R9100 stroke adjusting screws and plate. Designed as a genuine replacement, it maintains smooth shifting and reliable transmission. Crafted specifically for Shimano’s RD-R9100 model, these components guarantee perfect fit and durability, helping you keep your...
                              £3.77
                              £3.99
                              £3.77
                              Save £0.22
                            • Shimano RD-R9100 rear derailleur cable fixing bolt and plate replacement parts, bike components for precise gear shifting.Shimano RD-R9100 rear derailleur cable fixing bolt and plate replacement components for bike gear shifting.

                                Shimano RD-R9100 Rear Derailleur Cable Fixing Bolt and Plate Replacement Parts

                                Ensure smooth and reliable gear shifting with the Shimano RD-R9100 cable fixing bolt and plate. This genuine Shimano component guarantees perfect compatibility and durability for your rear mech setup. Designed specifically for transmission precision, it helps maintain optimal cable tension and secure fastening, enhancing...
                                £3.77
                                £3.99
                                £3.77
                                Save £0.22
                              • Shimano RD-R9100 B-tension adjusting screw and plate replacement component for bike derailleur maintenance.Shimano RD-R9100 B-Tension screw and plate replacement components for bicycle derailleur, shown in close-up.

                                  Shimano RD-R9100 B-Tension Adjusting Screw and Plate Replacement Part

                                  Ensure precise rear derailleur adjustment with the Shimano RD-R9100 B-tension screw and plate. This genuine replacement part guarantees optimal performance and durability for your drivetrain. Designed exclusively for Shimano components, it fits perfectly to maintain smooth gear shifts and extend the lifespan of your...
                                  £2.83
                                  £2.99
                                  £2.83
                                  Save £0.16
                                • Shimano RD-R9100 rear derailleur cable adjusting bolt, replacement component for bike gear shifting.Shimano RD-R9100 rear derailleur cable adjusting bolt replacement part for bike components, showing the small metal bolt.

                                    Shimano RD-R9100 Rear Derailleur Cable Adjusting Bolt Unit Replacement Part

                                    Ensure smooth shifting performance with the Shimano RD-R9100 cable adjusting bolt unit. This genuine replacement part fits perfectly for reliable rear mech adjustments. What It’s Good For Precise cable tension adjustment for optimal gear shifts Durable Shimano quality for long-lasting use Easy installation as...
                                    £4.72
                                    £4.99
                                    £4.72
                                    Save £0.27
                                  • Shimano RD-R9100 rear derailleur bracket axle unit for normal type bicycle component replacement, showing the metal axle part.Shimano RD-R9100 rear derailleur bracket axle unit for normal type bicycle component replacement, shown in the image.

                                      Shimano RD-R9100 Rear Derailleur Bracket Axle Unit for Normal Type Replacement

                                      The Shimano Spares RD-R9100 bracket axle unit is designed for smooth and reliable rear mech performance. This genuine Shimano component ensures precise gear shifting and long-lasting durability. Perfect for maintaining your RD-R9100 rear derailleur, it guarantees compatibility and high-quality standards for your bike's transmission...
                                      £23.62
                                      £24.99
                                      £23.62
                                      Save £1.37
                                    • Shimano Dura-Ace RD-R9100/R9150 rear derailleur pulley set with sealed bearings for high-performance bike components.Shimano Dura-Ace RD-R9100/R9150 rear derailleur pulley set with sealed bearings for high-performance bike components.

                                        Shimano Dura-Ace RD-R9100/R9150 Rear Derailleur Pulley Set with Sealed Bearings

                                        Upgrade your bike's performance with the Shimano Dura-Ace RD-R9100/R9150 rear mech pulley set. Designed specifically for the Dura Ace RDR9100 and RDR9150 models, this genuine Shimano replacement ensures precise shifting and smooth drivetrain operation. Featuring sealed bearings in both the guide and tension pulley...
                                        £34.83
                                        £42.99
                                        £34.83
                                        Save £8.16
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