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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  • Shimano Spares RD-M7100 SGS inner plate for rear derailleur replacement, showcasing metallic component with teeth and mounting points.Shimano Spares RD-M7100 SGS inner plate for rear derailleur, showing detailed metal component with gear teeth and mounting holes.

      Shimano Spares RD-M7100 SGS Inner Plate Replacement for Rear Derailleur

      The Shimano Spares RD-M7100 inner plate, SGS is a genuine replacement part designed to ensure optimal performance of your rear mech. Crafted with precision, it restores your transmission’s efficiency and reliability. This component fits perfectly for Shimano RD-M7100 models, maintaining smooth shifting and durability....
      £8.51
      £8.99
      £8.51
      Save £0.48
    • Shimano Rd-M8100 Xt 12-Speed Rear Derailleur Shadow+ Gs For Single Rear Mech

        Shimano Deore XT RD-M8100 12-Speed Shadow+ GS Rear Derailleur for MTB

        The Shimano Deore XT RD-M8100 XT 12-speed rear derailleur, Shadow+ GS single is engineered to deliver precise and reliable shifting performance, perfect for tackling the most demanding mountain trails. Its Shadow Plus technology features a super low profile design combined with an optimized slant...
        £100.93
        £109.99
        £100.93
        Save £9.06
      • Shimano Rd-R9250 Boot Spares & AccessoriesShimano Rd-R9250 Boot Spares & Accessories

          Shimano Spares RD-R9250 Rear Derailleur Boot Replacement Part for Smooth Shifting

          Ensure smooth shifting with the genuine Shimano Spares RD-R9250 boot, designed for optimal rear mech performance. This replacement part fits perfectly and maintains your bike’s transmission integrity. What It’s Good For Restoring your RD-R9250 rear mech to peak condition Protecting internal components from dirt...
          £0.94
          £0.99
          £0.94
          Save £0.05
        • Shimano RD-R9250 rear derailleur stay cable replacement spare part for bicycle components, shown in image.Shimano RD-R9250 rear derailleur stay cable replacement spare part for bicycle components.

            Shimano RD-R9250 Rear Derailleur Stay Cable Replacement Spare Part

            The Shimano Spares RD-R9250 stay cable ensures smooth and precise rear derailleur performance. Designed as a genuine replacement part, it guarantees perfect compatibility and durability. Maintaining your transmission with this cable helps preserve shifting accuracy and extends component lifespan, making it an essential for...
            £0.94
            £0.99
            £0.94
            Save £0.05
          • Campagnolo Veloce 10-speed black rear derailleur for road bikes, showcasing the lightweight component with precise gear shifting.Campagnolo Veloce 10X black rear derailleur for 10-speed road bikes, showcasing the lightweight bike component with brand logo.

            Campagnolo Veloce 10X Black Rear Mech - 10-Speed Road Bike Derailleur - Black

            The Campagnolo Veloce 10X Black Rear Mech redefines precision in road cycling transmission. Its innovative parallelogram design brings enhanced rigidity and reduced weight, ensuring swift and accurate gear shifts every time. Inspired by the advanced 11-speed models, it features an oversized outer plate for...
            £92.89
            £95.00
            £92.89
            Save £2.11
            • Black
          • SRAM SX Eagle 12-speed aluminum rear derailleur for mountain bikes, black color, durable component for smooth shifting.SRAM SX Eagle 12-speed aluminum rear derailleur for mountain bikes, black component with sleek design and gear tensioning system.

              SRAM SX Eagle Rear Derailleur 12 Speed Aluminum Black A1 for Mountain Bikes

              The SRAM Rear Derailleur SX Eagle Aluminum 12 Speed in Black A1 is designed to seamlessly integrate into your mountain bike’s transmission system, offering reliable and precise shifting performance. This derailleur serves as an excellent entry point into the SRAM Eagle Ecosystem, equipped with...
              £73.32
              £84.00
              £73.32
              Save £10.68
            • Hope Jockey Wheels 16/14 for Sram T-TypeHope Jockey Wheels 16/14 for Sram T-Type

                Hope Jockey Wheels 16/14 for Sram T-Type Rear Mech – Durable Drivetrain Upgrade - Blue

                Hope Jockey Wheels 16/14 for Sram T-Type offer a perfect balance of lightweight design and durability. Engineered to reduce drivetrain drag, they enhance your bike’s transmission efficiency. These components ensure smooth rear mech operation and reliable performance under various riding conditions. Upgrade your drivetrain...
                £43.70
                £47.50
                £43.70
                Save £3.80
                • Blue
                • Orange
                • Smoke
                • Black
              • Shimano RD-R7000 rear derailleur cable adjusting bolt, genuine spare part for bike components, close-up image.Shimano RD-R7000 rear derailleur cable adjusting bolt, genuine spare component for precise gear shifting.

                  Shimano RD-R7000 Rear Derailleur Cable Adjusting Bolt Unit – Genuine Spare Part

                  Upgrade your bike's shifting precision with the Shimano Spares RD-R7000 cable adjusting bolt unit. Designed for smooth and reliable gear changes, this genuine Shimano component ensures optimal rear mech performance. Easy to install and built to last, it maintains your transmission’s efficiency, keeping your...
                  £1.88
                  £1.99
                  £1.88
                  Save £0.11
                • Shimano RD-M7100 SGS outer plate assembly for rear derailleur, replacement component for Shimano bike drivetrain.Shimano RD-M7100 SGS rear derailleur outer plate assembly for replacement, featuring metal construction and precise gear alignment.

                    Shimano RD-M7100 SGS Outer Plate Assembly Replacement for Rear Derailleur

                    The Shimano Spares RD-M7100 outer plate assembly, SGS, is a genuine replacement designed to maintain the performance of your rear mech. Crafted with precision, it ensures smooth and reliable gear shifting for your bike’s transmission system. Ideal for Shimano enthusiasts, this component guarantees compatibility...
                    £11.34
                    £11.99
                    £11.34
                    Save £0.65
                  • Shimano RD-R8000 rear derailleur cable adjusting bolt replacement part, close-up view of the component for bike gear adjustment.Shimano RD-R8000 rear derailleur cable adjusting bolt, replacement component for bike gear shifting system.

                      Shimano RD-R8000 Rear Derailleur Cable Adjusting Bolt Unit Replacement Part

                      The Shimano Spares RD-R8000 cable adjusting bolt unit ensures precise rear derailleur tuning for smooth gear shifts. Designed as a genuine replacement part, it maintains optimal transmission performance. What It’s Good For Fine-tuning rear derailleur cable tension Restoring Shimano RD-R8000 shifting accuracy Maintaining smooth...
                      £3.77
                      £3.99
                      £3.77
                      Save £0.22
                    • Placeholder image

                        SRAM GX T-Type Eagle AXS Rear Derailleur Full Mount Bolt Kit for Secure Fit

                        Upgrade your SRAM GX T-Type Eagle AXS with this full mount bolt kit for a secure and precise rear derailleur setup. Designed for durability and perfect fit, it ensures smooth shifting performance. What It’s Good For Maintains reliable rear derailleur attachment Compatible with SRAM...
                        £13.40
                        £19.00
                        £13.40
                        Save £5.60
                      • SRAM rear derailleur battery lever clip for GX T-Type Eagle AXS and Red XPLR AXS components, shown on a white background.

                          SRAM Rear Derailleur Battery Lever Clip for GX T-Type Eagle AXS & Red XPLR AXS Qty 1

                          Enhance your SRAM GX T-Type Eagle AXS or Red XPLR AXS setup with the SRAM Rear Derailleur Battery Lever/Clip. Designed specifically for seamless integration, this component ensures secure battery attachment and reliable performance. Crafted to meet SRAM's high standards, it supports smooth shifting and...
                          £12.64
                          £15.00
                          £12.64
                          Save £2.36
                        • Shimano RD-R9250 inner plate replacement for rear derailleur, showing detailed component part for bicycle gear shifting.

                            Shimano RD-R9250 Inner Plate Replacement for Rear Derailleur Spares

                            The Shimano Spares RD-R9250 inner plate ensures smooth and reliable rear mech performance. Crafted as a genuine Shimano replacement, it maintains optimal transmission function. What It’s Good For Restoring Shimano RD-R9250 rear mech efficiency Ensuring precise gear shifting for smooth rides Maintaining the durability...
                            £34.96
                            £36.99
                            £34.96
                            Save £2.03
                          • SRAM Eagle AXS rear derailleur cage kit aluminum T-type with pulleys and hex3 bit driver, no damper, for bicycle components.

                              SRAM Eagle AXS Rear Derailleur Cage Kit Aluminum T-Type Without Damper with Pulleys & Bit Driver Hex3

                              Upgrade your SRAM Eagle AXS with this durable aluminum rear derailleur cage kit. Designed for precise shifting, it includes replacement outer and inner cages, pulleys, and a Bit Driver Hex3. Constructed for performance, this kit ensures smooth transmission and reliable rear mech function without...
                              £24.20
                              £28.00
                              £24.20
                              Save £3.80
                            • Shimano RD-R8150 rear derailleur outer plate and fixing screw replacement parts for bike componentsShimano RD-R8150 rear derailleur outer plate and fixing screw replacement parts for bicycle components.

                                Shimano RD-R8150 Outer Plate and Fixing Screw Replacement Parts for Rear Derailleur

                                Ensure seamless shifting performance with the genuine Shimano RD-R8150 outer plate and fixing screw. Designed specifically for Shimano rear mechs, this replacement part restores optimal transmission function. Crafted for durability and precise fit, it guarantees reliable operation and extends the lifespan of your drivetrain...
                                £17.95
                                £18.99
                                £17.95
                                Save £1.04
                              • Shimano Spares RD-R8150 rear derailleur charger cover, genuine replacement component for bike gear shifting.Shimano Spares RD-R8150 rear derailleur charger cover, genuine replacement component for bike gears and drivetrain.

                                  Shimano Spares RD-R8150 Rear Mech Charger Cover Genuine Replacement Part

                                  The Shimano Spares RD-R8150 charger cover is a genuine replacement part, designed to protect your rear mech charger effectively. Built with precision, it ensures durability and perfect fit for Shimano transmission systems. Keep your bike's performance seamless by replacing worn or damaged charger covers...
                                  £3.77
                                  £3.99
                                  £3.77
                                  Save £0.22
                                • Shimano Spares RD-R8150 rear derailleur inner plate replacement component for bike gear shifting.Shimano Spares RD-R8150 rear derailleur inner plate replacement component for bike gear shifting.

                                    Shimano Spares RD-R8150 Rear Derailleur Inner Plate Replacement Part

                                    The Shimano Spares RD-R8150 inner plate is a reliable replacement part designed to maintain your rear mech's optimal performance. Crafted by Shimano, it ensures perfect compatibility and durability for your transmission system. Ideal for cyclists who want to keep their equipment in top condition,...
                                    £5.65
                                    £5.99
                                    £5.65
                                    Save £0.34
                                  • Shimano Spares RD-R8000 rear derailleur cable fixing bolt and plate replacement component for bike gear shifting.Shimano Spares RD-R8000 rear derailleur cable fixing bolt and plate replacement components for bike gear shifting.

                                      Shimano Spares RD-R8000 Rear Derailleur Cable Fixing Bolt and Plate Replacement

                                      Ensure smooth and precise gear shifting with the Shimano Spares RD-R8000 cable fixing bolt and plate. Designed as a genuine Shimano replacement, it guarantees perfect compatibility and durability. Easy to install, this component maintains your rear mech’s optimal performance, keeping your transmission reliable ride...
                                      £3.77
                                      £3.99
                                      £3.77
                                      Save £0.22
                                    • Shimano universal rear derailleur pulley set with two black plastic pulleys and metal axles for bike gear shifting componentsShimano universal rear derailleur pulley set showing two black pulley wheels for bike gear shifting components

                                        Shimano Universal Rear Mech Pulley Set for Shimano Rear Derailleurs Replacement

                                        Upgrade your bike’s shifting precision with the Shimano Universal rear mech pulley set, designed as a genuine replacement for a wide range of Shimano rear derailleurs. This set includes two high-quality pulley wheels that ensure smooth and reliable transmission performance. Ideal for maintaining optimal...
                                        £9.72
                                        £11.99
                                        £9.72
                                        Save £2.27
                                      • Shimano Sora RD-R3000 9-speed rear derailleur for road bikes, compatible with 11-32T gear range, shown in close-up image.Shimano Sora RD-R3000 9-speed rear derailleur for road bikes, compatible with 11-32T gear range, shown in a close-up image.

                                        Shimano RD-R3000 Sora 9-Speed Rear Derailleur for Road Bikes 11-32T Compatible - Grey

                                        The Shimano Rd-R3000 Sora Rear Derailleur offers smooth and reliable shifting for 9-speed road bikes. Designed with an advanced light action mechanism, it ensures low-friction gear changes whether you're climbing or sprinting. Its wide link construction enhances rigidity, providing precise and consistent gear shifts...
                                        from £32.40
                                        £39.99
                                        from £32.40
                                        Save £7.59
                                        • Grey
                                      • SRAM GX 1x11-Speed MTB rear derailleur with long cage and Cage Lock Technology, designed for durable mountain biking performance.SRAM GX 1x11-Speed rear derailleur for mountain bikes with long cage and cage lock technology, designed for MTB components.

                                        SRAM GX Rear Derailleur 1x11-Speed Long Cage MTB 11SPD with Cage Lock Technology - Reds

                                        The SRAM Rear Derailleur GX 1X11-Speed Long Cage offers outstanding performance tailored for mountain biking enthusiasts. Designed with precision and durability in mind, it ensures smooth and reliable shifting across all terrains. Its advanced X-ACTUATION technology guarantees crisp and accurate gear changes for the...
                                        £108.56
                                        £131.00
                                        £108.56
                                        Save £22.44
                                        • Reds
                                      • SRAM GX Eagle 12-speed rear derailleur for mountain bikes, featuring a lunar finish and compatible with 52T cassettes.SRAM GX Eagle 12-speed mountain bike rear derailleur with lunar finish and max 52T capacity, designed for optimal shifting performance.

                                          SRAM GX Eagle Rear Derailleur 12 Speed Max 52T Lunar for Mountain Bikes

                                          The SRAM Rear Derailleur GX Eagle 12 speed Max 52T in Lunar 12 Speed is engineered for riders who demand flawless shifting performance across diverse terrains. Designed to handle the rigors of mountain biking, this rear mech offers precise and reliable gear changes even...
                                          £106.11
                                          £122.00
                                          £106.11
                                          Save £15.89
                                        • CeramicSpeed Shimano 12-speed pulley wheels for Dura Ace 9250, Ultegra 8150, and 105 7150 bike components on a clean background.

                                            CeramicSpeed Shimano 12s Pulley Wheels for Dura Ace 9250, Ultegra 8150, 105 7150 - Black

                                            Experience smoother and more efficient shifting with the CeramicSpeed Shimano 12s Pulley Wheels, meticulously handbuilt in Denmark. These high-quality jockey wheels are engineered to reduce friction and enhance drivetrain performance for Shimano Dura Ace 9250, Ultegra 8150, and 105 7150 rear derailleurs. Included with...
                                            £217.34
                                            £229.99
                                            £217.34
                                            Save £12.65
                                            • Black
                                          • CeramicSpeed OSPW Bushing for Shimano Dura Ace 9250CeramicSpeed OSPW Bushing for Shimano Dura Ace 9250

                                              CeramicSpeed OSPW Bushing for Shimano Dura Ace 9250/8150 Rear Derailleur - Black

                                              Upgrade your Shimano Dura Ace 9250 derailleur with the CeramicSpeed OSPW Bushing, designed to enhance smoothness and durability. This precision-engineered component ensures optimal performance by reducing friction and wear in your rear mech assembly. Ideal for maintaining peak transmission efficiency on demanding rides. What...
                                              £3.77
                                              £3.99
                                              £3.77
                                              Save £0.22
                                              • Black
                                            • Shimano RD-R9250 rear derailleur outer plate and fixing screw replacement parts, bicycle bike components for gear shifting.

                                                Shimano RD-R9250 Rear Derailleur Outer Plate & Fixing Screw Replacement Parts

                                                Ensure your Shimano RD-R9250 rear mech performs flawlessly with this genuine outer plate and fixing screw replacement. Designed for perfect fit and durability, it restores your transmission’s reliability. What It’s Good For Maintaining smooth shifting performance Extending the lifespan of your RD-R9250 rear mech...
                                                £28.35
                                                £29.99
                                                £28.35
                                                Save £1.64
                                              • Shimano Rd-M9100-Gs Stabilizer Kit Unit Spares & Accessories

                                                  Shimano RD-M9100-GS Rear Derailleur Stabilizer Kit Unit Genuine Replacement Part

                                                  The Shimano Spares RD-M9100-GS stabilizer kit unit ensures precise rear derailleur performance and reduces chain slap for smooth shifting. Designed as a genuine Shimano replacement part, it guarantees compatibility and durability for your transmission system. What It’s Good For Improves rear derailleur stability during...
                                                  £18.89
                                                  £19.99
                                                  £18.89
                                                  Save £1.10
                                                • SRAM GX T-Type Eagle AXS rear derailleur cage assembly kit with damper and pulleys, bicycle component for precise gear shifting

                                                    SRAM GX T-Type Eagle AXS Rear Derailleur Cage Assembly Kit with Damper & Pulleys

                                                    The SRAM Rear Derailleur Cage Assembly Kit GX T-Type Eagle AXS is a complete replacement solution designed to restore optimal performance to your drivetrain. This kit includes both outer and inner cages, a damper, and pulleys, ensuring smooth and precise shifting. Crafted by SRAM,...
                                                    £118.11
                                                    £125.00
                                                    £118.11
                                                    Save £6.89
                                                  • SRAM Eagle AXS Carbon T-Type rear derailleur cage kit with pulleys and Hex3 tool, lightweight bike component for precise shifting.

                                                      SRAM Eagle AXS Carbon T-Type Rear Derailleur Cage Kit Without Damper with Pulleys & Hex3 Tool

                                                      Upgrade your SRAM Eagle AXS derailleur with this Carbon T-Type Cage Kit, designed for precision and lightweight performance. It includes both outer and inner cages, plus pulleys for smooth shifting. Crafted from carbon fiber, this cage kit enhances durability and responsiveness without the damper,...
                                                      £101.09
                                                      £115.00
                                                      £101.09
                                                      Save £13.91
                                                    • Sram rear derailleur cable anchor and limit screw spare for Rival series, close-up of metal components for bike shifting.Sram rear derailleur cable anchor and limit screw spare for Rival series bike components, shown in black and metal finish.

                                                        Sram Rear Derailleur Cable Anchor & Limit Screw Spare for Rival Series

                                                        Optimize your bike's shifting precision with the Sram Rear Derailleur Cable Anchor and Limit Screw. Designed specifically for Rival series, this component ensures smooth and reliable gear changes every ride. Manufactured by Sram, a trusted name in cycling, this spare part is essential for...
                                                        £5.52
                                                        £7.00
                                                        £5.52
                                                        Save £1.48
                                                      • Sram Force22 Rear Derailleur 11 Speed Rear Mechsram rear mech force22 rear derailleur 11 speed p44683

                                                        SRAM Force22 11-Speed Rear Derailleur for Road Bikes Rear Mech

                                                        Experience precise shifting with the Sram Force22 Rear Derailleur. Designed for road cycling, it ensures smooth and reliable gear changes across 11 speeds. Engineered with advanced technology, it enhances your bike’s transmission performance for a seamless ride. What It’s Good For Accurate and quick...
                                                        from £95.00
                                                        £112.00
                                                        from £95.00
                                                        Save £17.00
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