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 RD-9000 rear derailleur pulley bolt set with two replacement spares for bike component maintenance.Shimano RD-9000 rear derailleur pulley bolt set with two replacement spare bolts for bike component maintenance

      Shimano RD-9000 Rear Derailleur Pulley Bolt Set, 2 Pieces Replacement Spares

      Ensure smooth and reliable gear shifts with the Shimano Spares RD-9000 pulley bolt, a genuine replacement part designed for precision and durability. This 2-piece set fits perfectly with your rear mech, maintaining optimal transmission performance. Crafted by Shimano, these bolts guarantee compatibility and longevity,...
      £3.77
      £3.99
      £3.77
      Save £0.22
    • Shimano Spares RD-9000 plate axle assembly for rear derailleur, bike component replacement part.Shimano Spares RD-9000 plate axle assembly for rear derailleur replacement, showing the metal component with gear mounting details.

        Shimano Spares RD-9000 Plate Axle Assembly for Rear Derailleur Replacement

        Upgrade your bike’s performance with the Shimano Spares RD-9000 plate axle assembly. This genuine Shimano part ensures precise rear mech function and smooth transmission. Designed for easy replacement, it maintains the integrity of your drivetrain and enhances shifting reliability. What It’s Good For Maintaining...
        £14.18
        £14.99
        £14.18
        Save £0.81
      • Shimano RD-9000 rear derailleur stroke adjusting screws and plate replacement parts for bicycle components.Shimano RD-9000 rear derailleur stroke adjusting screws and plate replacement components for bike gear maintenance.

          Shimano RD-9000 Rear Mech Stroke Adjusting Screws and Plate Replacement Parts

          Ensure optimal performance of your Shimano RD-9000 rear mech with these genuine stroke adjusting screws and plate. Designed for precise tuning and reliable transmission function, they maintain smooth gear shifts and extend the lifespan of your drivetrain. What It’s Good For Perfect fit for...
          £4.71
          £4.99
          £4.71
          Save £0.28
        • Shimano RD-9000 rear derailleur cable fixing bolt and plate replacement components for bike gear shifters.Shimano RD-9000 rear derailleur cable fixing bolt and plate spare components for bicycle drivetrain repairs

            Shimano RD-9000 Rear Mech Cable Fixing Bolt and Plate Replacement Spares

            Ensure smooth and reliable gear shifting with the Shimano Spares RD-9000 cable fixing bolt and plate. Designed as a genuine replacement part, it maintains the integrity of your rear mech system. Crafted to fit perfectly within Shimano’s transmission components, this bolt and plate offer...
            £3.77
            £3.99
            £3.77
            Save £0.22
          • Shimano RD-9000 B-Axle Cap unit for rear derailleur replacement, showing close-up of component in natural lighting.Shimano RD-9000 B-Axle Cap Unit replacement for rear derailleur, bicycle component spare part for Shimano bike gear systems.

              Shimano RD-9000 B-Axle Cap Unit Replacement for Rear Derailleur Spares

              The Shimano Spares RD-9000 B-axle cap unit is a genuine replacement part designed for precise rear mech performance. It ensures smooth transmission and reliable shifting for your Shimano drivetrain. Perfect for maintaining or repairing your RD-9000, this cap unit helps extend the life of...
              £7.55
              £7.99
              £7.55
              Save £0.44
            • Shimano RD-9000 B-Axle assembly for rear derailleur, bicycle component spare part, Shimano Spares, replacement bike gear partShimano RD-9000 B-Axle Assembly for rear derailleur, replacement component, Shimano Spares, bicycle bike part.

                Shimano RD-9000 B-Axle Assembly Replacement Part for Rear Mech Spares

                Ensure smooth shifting with the Shimano Spares RD-9000 B-axle assembly, a genuine replacement part designed for optimal performance. Crafted to fit seamlessly with your Shimano rear mech, it guarantees reliable transmission function. Made from high-quality materials, this component enhances durability and precision for your...
                £31.19
                £32.99
                £31.19
                Save £1.80
              • Shimano Spares RD-9000 rear derailleur nose replacement part for Shimano bike derailleur components.Shimano Spares RD-9000 rear derailleur nose replacement part for Shimano rear derailleur mech, showing metal component and attachment points.

                  Shimano Spares RD-9000 Nose Replacement Part for Rear Derailleur Mech

                  The Shimano Spares RD-9000 nose is a genuine replacement part designed to maintain optimal performance of your rear mech. Crafted with precision, it ensures smooth and reliable gear shifting for your bike. Durable and easy to install, this component is essential for riders who...
                  £0.94
                  £0.99
                  £0.94
                  Save £0.05
                • Shimano Rd-M430 Cable Adjusting Bolt Unit Spares & AccessoriesShimano Spares RD-M430 cable adjusting bolt unit | Swinnerton Cycles

                    Shimano RD-M430 Rear Derailleur Cable Adjusting Bolt Unit Replacement Part

                    Ensure smooth gear shifting with the genuine Shimano RD-M430 cable adjusting bolt unit. Designed for rear mech adjustments, this component guarantees precise transmission tuning. Perfect for maintaining optimal bike performance, it fits seamlessly into Shimano setups, offering reliable durability and ease of installation. What...
                    £2.99
                    £2.99
                  • Shimano Ultegra RD-6700/6770 rear derailleur pulley set for Deore XT and Saint bike components, showing metal pulleys and mounting hardware.Shimano Ultegra RD-6700/6770 rear derailleur pulley set for bike components, compatible with Deore XT and Saint series.

                      Shimano Ultegra RD-6700/6770 Rear Mech Pulley Set for Deore XT & Saint

                      Enhance your bike’s shifting precision with the Shimano Ultegra RD-6700/6770 rear mech pulley set. Designed as a genuine Shimano replacement, this set ensures smooth and reliable gear changes by maintaining optimal tension and reducing wear. Compatible with Ultegra, Deore XT, and Saint rear derailleurs,...
                      £16.20
                      £19.99
                      £16.20
                      Save £3.79
                    • Shimano RD-6700-A rear derailleur spare parts with outer plate and stopper pin for SS-type Shimano components.Shimano RD-6700-A rear derailleur spare parts including outer plate and stopper pin, bike components for Shimano spares.

                        Shimano RD-6700-A Outer Plate & Stopper Pin SS-Type Rear Derailleur Spare Parts

                        Ensure smooth shifting with the genuine Shimano RD-6700-A outer plate and stopper pin. Designed for durability, this SS-type component guarantees reliable performance in your rear mech setup. Perfect for maintaining the integrity of your transmission system, these spares keep your bike running efficiently. What...
                        £15.99
                        £15.99
                      • Shimano Dura-Ace RD-7900 rear derailleur pulley set with sealed bearings, bicycle component for smooth gear shifting.Shimano Dura-Ace RD-7900 rear derailleur pulley set with sealed bearings for high-performance bike component replacement

                          Shimano Dura-Ace RD-7900 Rear Mech Pulley Set with Sealed Bearings Replacement

                          Upgrade your drivetrain with the Shimano Dura-Ace RD-7900 rear mech pulley set, designed for flawless shifting performance. Featuring precision sealed bearings in both guide and tension pulleys, this set ensures smooth, friction-free operation that extends the life of your derailleur. Manufactured as a genuine...
                          £34.83
                          £42.99
                          £34.83
                          Save £8.16
                        • Shimano RD-M820 guide pulley bolt for rear derailleur replacement, showing the small metal component and threading details.Shimano RD-M820 guide pulley bolt replacement for rear derailleur components, showing the small metal bolt on a white background.

                            Shimano RD-M820 Guide Pulley Bolt Replacement for Rear Derailleur Spares

                            The Shimano Spares RD-M820 guide pulley bolt is a genuine replacement designed to ensure smooth and reliable rear derailleur performance. Crafted to fit perfectly with your RD-M820 rear mech, it maintains optimal transmission function. Made by Shimano, this high-quality component guarantees durability and precise...
                            £3.77
                            £3.99
                            £3.77
                            Save £0.22
                          • Shimano Rdm310 Pulley Set Spares & AccessoriesShimano Altus RD-M310 tension and guide pulley set | Swinnerton Cycles

                              Shimano Altus RD-M310 Rear Derailleur Tension and Guide Pulley Set

                              Upgrade your bike's performance with the Shimano Altus RD-M310 tension and guide pulley set. Designed for smooth and reliable shifting, this genuine Shimano component ensures optimal drivetrain function. Easy to install and built to last, it maintains precise chain tension and guides the chain...
                              £7.29
                              £8.99
                              £7.29
                              Save £1.70
                            • Shimano SLX and Metrea RD-U5000 tension and guide pulley set for rear derailleurs, component bike parts, close-up view.

                                Shimano SLX & Metrea RD-U5000 Tension and Guide Pulley Set for Rear Derailleurs

                                Upgrade your drivetrain with the Shimano SLX and Metrea RD-U5000 tension and guide pulley set, designed for precise shifting and smooth performance. This genuine replacement part ensures compatibility with SLX and Metrea RD-M7000-11 and RD-U5000 rear derailleurs, maintaining your bike’s reliability. Crafted for durability,...
                                £10.53
                                £12.99
                                £10.53
                                Save £2.46
                              • Shimano FD-M8025 stroke adjust screws and plate replacement components, M4 x 13.7mm, for bike derailleur maintenance.Shimano FD-M8025 stroke adjust screws and plate, M4 x 13.7mm replacement components for bike derailleur maintenance.

                                  Shimano FD-M8025 Stroke Adjust Screws and Plate M4 x 13.7mm Replacement Parts

                                  Ensure precise adjustment with the Shimano FD-M8025 stroke adjust screws and plate, designed for optimal rear mech performance. Crafted as a genuine Shimano replacement, it guarantees durability and perfect fit. What It’s Good For Maintaining accurate derailleur stroke for smooth gear shifting Reliable replacement...
                                  £1.88
                                  £1.99
                                  £1.88
                                  Save £0.11
                                • Shimano RD-M8000 SGS rear derailleur outer plate assembly, genuine spare component for bike gear shifting.Shimano RD-M8000 SGS rear derailleur outer plate assembly for mountain bike components, genuine Shimano spare part.

                                    Shimano RD-M8000 SGS-Type Rear Derailleur Outer Plate Assembly Genuine Spare

                                    Upgrade your Shimano RD-M8000 rear derailleur with this genuine SGS-type outer plate assembly. Designed for precise shifting and durability, it ensures optimal performance of your drivetrain. What It’s Good For Maintaining smooth and accurate gear changes Extending the lifespan of your RD-M8000 rear mech...
                                    £14.18
                                    £14.99
                                    £14.18
                                    Save £0.81
                                  • Shimano RD-M8000 GS-type outer plate assembly for rear derailleur, replacement component for bicycle gear shifting.Shimano RD-M8000 GS-Type outer plate assembly for rear derailleur, showing metal component with gear and attachment points.

                                      Shimano RD-M8000 GS-Type Outer Plate Assembly Replacement Part for Rear Derailleur

                                      Replace your worn or damaged Shimano RD-M8000 GS-type outer plate assembly with this genuine Shimano component. Designed for optimal rear mech performance, it ensures smooth and reliable shifting. Crafted for durability and perfect fit, this spare part helps maintain your transmission's efficiency and extends...
                                      £13.22
                                      £13.99
                                      £13.22
                                      Save £0.77
                                    • Shimano RD-M8000 rear derailleur cable fixing bolt and plate, M5 x 9.2 mm spare components for bike gear shifting.Shimano RD-M8000 rear derailleur cable fixing bolt and plate, M5 x 9.2 mm spare components for bike gear shifting.

                                        Shimano RD-M8000 Rear Derailleur Cable Fixing Bolt & Plate M5 x 9.2 mm Spares

                                        Ensure precise gear shifting with the Shimano Spares RD-M8000 cable fixing bolt and plate, designed for reliable performance. This genuine Shimano component fits perfectly with your rear mech, offering durability and secure cable attachment. Made to exact specifications (M5 x 9.2 mm), it guarantees...
                                        £2.82
                                        £2.99
                                        £2.82
                                        Save £0.17
                                      • Shimano RD-M8000 derailleur switch lever unit and fixing plate replacement part for bike components.Shimano RD-M8000 switch lever unit and fixing plate replacement components for bike gear shifters.

                                          Shimano RD-M8000 Switch Lever Unit and Fixing Plate Replacement Part

                                          The Shimano RD-M8000 switch lever unit and fixing plate offer a precise and reliable solution for your rear mech needs. Designed as a genuine Shimano replacement, this component ensures seamless transmission performance. Built to exact specifications, it guarantees compatibility and durability, helping maintain your...
                                          £3.77
                                          £3.99
                                          £3.77
                                          Save £0.22
                                        • Shimano RD-M8000 P-Cover unit replacement part for rear derailleur protection, Shimano Spares components, close-up shotShimano RD-M8000 P-Cover replacement part for rear derailleur protection, showing the black component with mounting details.

                                            Shimano RD-M8000 P-Cover Unit Replacement Part for Rear Derailleur Protection

                                            The Shimano Spares RD-M8000 P-cover unit ensures reliable protection for your rear mech. Designed as a genuine replacement, it maintains optimal performance and durability. Crafted specifically for Shimano components, this part fits seamlessly to enhance transmission efficiency and extend the lifespan of your bike’s...
                                            £6.61
                                            £6.99
                                            £6.61
                                            Save £0.38
                                          • Shimano RD-M8000 rear derailleur bracket axle unit for normal type, bicycle component replacement.Shimano RD-M8000 rear derailleur bracket axle unit for normal type replacement, bike components, Shimano Spares.

                                              Shimano RD-M8000 Rear Derailleur Bracket Axle Unit for Normal Type Replacement

                                              Upgrade your bike’s rear derailleur with the Shimano RD-M8000 bracket axle unit, designed for the normal type. This genuine Shimano component ensures reliable performance and precise gear shifts, enhancing your riding experience. Crafted for durability and seamless fit, it’s the perfect replacement part to...
                                              £14.18
                                              £14.99
                                              £14.18
                                              Save £0.81
                                            • Shimano RD-M8000 B-Axle replacement part for direct mount rear derailleur, Shimano component spare for bike gear shifting.Shimano RD-M8000 B-Axle replacement component for direct mount rear derailleur, Shimano Spares bike parts.

                                                Shimano RD-M8000 B-Axle 2 Replacement for Direct Mount Rear Mech Spare Part

                                                The Shimano Spares RD-M8000 B-axle 2 is a genuine replacement part designed for direct mount rear mechs. Engineered for seamless transmission performance, it ensures durability and precision in your bike's shifting system. Perfect for maintaining or upgrading your Shimano drivetrain, this component guarantees compatibility...
                                                £6.61
                                                £6.99
                                                £6.61
                                                Save £0.38
                                              • Shimano Spares RD-M8000 rear derailleur P-cover replacement component for bicycle gear shifting.Shimano Spares RD-M8000 rear derailleur P-cover, replacement component for bike gear shifting, close-up of the part.

                                                  Shimano Spares RD-M8000 Rear Derailleur P-Cover Packing Replacement Part

                                                  The Shimano Spares RD-M8000 P-cover packing ensures a perfect fit for your rear mech, maintaining smooth transmission performance. It's a genuine Shimano replacement part designed for durability and reliability. What It’s Good For Maintaining optimal rear derailleur function Ensuring precise and smooth gear shifting...
                                                  £1.88
                                                  £1.99
                                                  £1.88
                                                  Save £0.11
                                                • Shimano RD-M8000 SGS rear derailleur inner plate replacement component for Shimano Spares bike parts.Shimano RD-M8000 SGS inner plate replacement for rear derailleur, showing detailed metal component for bike gear shifting.

                                                    Shimano RD-M8000 SGS Inner Plate Replacement for Rear Derailleur Spares

                                                    The Shimano Spares RD-M8000 inner plate, SGS type, ensures reliable performance and precision for your rear mech. Crafted as a genuine Shimano replacement, it guarantees compatibility and durability. Designed specifically for the RD-M8000 model, this inner plate supports smooth gear shifting and maintains optimal...
                                                    £8.51
                                                    £8.99
                                                    £8.51
                                                    Save £0.48
                                                  • Shimano RD-M8000 GS inner plate replacement for MTB rear derailleur, showing metal component with gear teeth and mounting points.Shimano RD-M8000 GS inner plate replacement for MTB rear derailleur, showing the metal component on a white background.

                                                      Shimano RD-M8000 GS Type Inner Plate Replacement for MTB Rear Mech

                                                      Upgrade your bike’s performance with the Shimano RD-M8000 inner plate, GS type. Designed as a genuine replacement part, it ensures smooth rear mech operation and reliable transmission function. Crafted by Shimano, this component maintains the integrity of your drivetrain for optimal shifting precision and...
                                                      £6.61
                                                      £6.99
                                                      £6.61
                                                      Save £0.38
                                                    • Shimano RD-M3000 rear derailleur B-axle replacement spare part for bike components, shown in close-up image.Shimano RD-M3000 rear derailleur B-Axle replacement part for bicycle components, shown with metal axle and mounting hardware.

                                                        Shimano RD-M3000 Rear Derailleur B-Axle Unit Replacement Spare Part

                                                        Replace your worn or damaged rear mech axle with the genuine Shimano RD-M3000 B-axle unit. Designed for perfect fit and reliable performance, it ensures smooth gear shifting every ride. Engineered by Shimano, this component maintains your bike’s transmission integrity and extends the lifespan of...
                                                        £10.38
                                                        £10.99
                                                        £10.38
                                                        Save £0.61
                                                      • Shimano Tiagra RD-4700 rear derailleur tension and guide pulley set for bike components replacement.Shimano Tiagra RD-4700 rear derailleur tension and guide pulley set for bike components, showing detailed pulleys and mounting parts.

                                                          Shimano Tiagra RD-4700 Rear Derailleur Tension & Guide Pulley Set Replacement

                                                          Maintain smooth shifting with the Shimano Tiagra RD-4700 tension and guide pulley set. Designed as a genuine replacement, it ensures optimal performance for your Tiagra rear derailleur. Crafted for durability and precision, this set keeps your drivetrain running efficiently, extending the life of your...
                                                          £9.72
                                                          £11.99
                                                          £9.72
                                                          Save £2.27
                                                        • Shimano RD-4700 GS rear derailleur outer plate and stopper pin replacement components on a white background.Shimano RD-4700 GS rear derailleur outer plate and stopper pin replacement components for bike gear shifting.

                                                            Shimano RD-4700 GS-Type Rear Derailleur Outer Plate & Plate Stopper Pin Replacement

                                                            Ensure smooth and reliable gear shifting with the Shimano RD-4700 outer plate and plate stopper pin for GS-type. This genuine Shimano component is designed for precise fit and durability. Perfect for maintaining or repairing your rear mech, it guarantees optimal transmission performance and extends...
                                                            £6.61
                                                            £6.99
                                                            £6.61
                                                            Save £0.38
                                                          • Shimano RD-4700 SS-Type rear derailleur outer plate and stopper pin replacement components for bike gear shifting.Shimano RD-4700 SS-Type rear derailleur outer plate and stopper pin replacement components for bike drivetrain repair.

                                                              Shimano RD-4700 SS-Type Rear Derailleur Outer Plate & Plate Stopper Pin Replacement

                                                              Ensure smooth and reliable shifting with the Shimano RD-4700 outer plate and plate stopper pin, designed specifically for SS-type rear derailleurs. This genuine Shimano component guarantees precise performance and durability. Easy to install and crafted for compatibility, it maintains your transmission system's integrity, preventing...
                                                              £5.65
                                                              £5.99
                                                              £5.65
                                                              Save £0.34
                                                            • Shimano RD-4700 GS rear derailleur inner plate replacement part for bike components, featuring precise metal construction.Shimano RD-4700 GS-Type rear derailleur inner plate replacement component for bike gear shifting.

                                                                Shimano RD-4700 GS-Type Rear Derailleur Inner Plate Replacement Spares

                                                                The Shimano Spares RD-4700 inner plate for GS-type is a genuine replacement designed to maintain optimal rear mech performance. Crafted with precision, it ensures smooth and reliable shifting for your bike. Durable and compatible with Shimano transmission systems, this inner plate is an essential...
                                                                £3.77
                                                                £3.99
                                                                £3.77
                                                                Save £0.22
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