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-4700 SS-Type rear derailleur inner plate replacement part for bike components.Shimano RD-4700 SS-Type rear derailleur inner plate replacement component for bike gear shifting.

      Shimano RD-4700 SS-Type Rear Derailleur Inner Plate Replacement Part

      The Shimano Spares RD-4700 inner plate for SS-type is a genuine replacement part designed for smooth rear mech performance. Crafted to ensure precise transmission function, it maintains your bike's shifting reliability. Easy to install, this component prolongs the life of your Shimano RD-4700 rear...
      £3.77
      £3.99
      £3.77
      Save £0.22
    • Shimano RD-M9000 rear derailleur P-cover and cap replacement components, bike drivetrain spare parts.Shimano RD-M9000 rear derailleur P-cover and cap replacement spares for bicycle components, showing the small replacement parts.

        Shimano RD-M9000 Rear Derailleur P-Cover and Cap Replacement Spares

        The Shimano Spares RD-M9000 P-cover and cap ensure reliable protection for your rear mech. Crafted as a genuine Shimano replacement, it guarantees perfect fit and durability. Designed to maintain optimal performance of your transmission, this accessory helps keep your bike running smoothly and efficiently....
        £8.51
        £8.99
        £8.51
        Save £0.48
      • Shimano XTR RD-M9000/M9020 rear derailleur pulley set replacement components for mountain bike drivetrain.

          Shimano XTR RD-M9000/M9020 Rear Derailleur Pulley Set Replacement Parts

          Ensure smooth and precise shifting with the Shimano XTR RD-M9000/M9020 rear mech pulley set. Designed specifically for the XTR RD-M9000 and M9020 models, this genuine Shimano replacement guarantees optimal performance and durability. Regularly replacing your derailleur pulley wheels helps maintain crisp gear changes and...
          £34.83
          £42.99
          £34.83
          Save £8.16
        • Shimano RD-M9000 switch lever and fixing plate replacement component for bike gear shifters.Shimano RD-M9000 switch lever unit and fixing plate replacement components for bike gear shifters.

            Shimano RD-M9000 Switch Lever Unit and Fixing Plate Replacement Part

            The Shimano Spares RD-M9000 switch lever unit and fixing plate offer reliable performance for your rear mech. This genuine Shimano component ensures precise gear shifting and durability for smooth rides. Designed to fit perfectly, it restores your transmission system to optimal condition, maintaining the...
            £7.55
            £7.99
            £7.55
            Save £0.44
          • Shimano RD-M9000 rear derailleur stroke adjusting screws and plate replacement parts for bike gear components.Shimano RD-M9000 rear derailleur stroke adjusting screws and plate replacement parts for bicycle gear components.

              Shimano RD-M9000 Rear Derailleur Stroke Adjusting Screws and Plate Replacement Parts

              Upgrade and maintain your Shimano RD-M9000 rear derailleur with these genuine stroke adjusting screws and plate. Designed for precise shifting and reliable performance, these components ensure your transmission operates smoothly. Made by Shimano, these replacement parts fit perfectly and restore your bike’s rear mech...
              £8.51
              £8.99
              £8.51
              Save £0.48
            • Shimano RD-M9000 rear derailleur cable fixing bolt and plate, M6 x 9.2mm spare component for bike gear shifting.Shimano RD-M9000 rear derailleur cable fixing bolt and plate, M6 x 9.2mm bike component spare parts for precise gear shifting.

                Shimano RD-M9000 Rear Mech Cable Fixing Bolt and Plate M6 x 9.2 mm Spares

                Ensure optimal performance of your Shimano RD-M9000 rear mech with this genuine cable fixing bolt and plate. Precisely engineered for a secure fit, it guarantees reliable gear shifting every ride. Designed with durable M6 x 9.2 mm specifications, this essential component maintains your transmission...
                £3.77
                £3.99
                £3.77
                Save £0.22
              • Shimano RD-M9000 B-tension adjusting screw and plate replacement components on a neutral background.Shimano RD-M9000 B-Tension adjusting screw and plate replacement parts for bike derailers, showing close-up of components.

                  Shimano RD-M9000 B-Tension Adjusting Screw & Plate Replacement Parts

                  Upgrade your Shimano RD-M9000 rear derailleur with this genuine B-tension adjusting screw and plate. Designed for precise tuning, it ensures optimal chain gap and smooth shifting performance. Manufactured by Shimano, this component guarantees compatibility and durability for your transmission. What It’s Good For Maintaining...
                  £4.71
                  £4.99
                  £4.71
                  Save £0.28
                • Shimano RD-M9000 P-Axle unit and O-ring replacement for rear derailleur, bike component spare parts, Shimano SparesShimano RD-M9000 P-Axle unit and O-ring replacement for rear derailleur, showing metal components and o-ring seal.

                    Shimano RD-M9000 P-Axle Unit and O-Ring Replacement for Rear Mech Spares

                    Ensure smooth and reliable gear shifting with the Shimano Spares RD-M9000 P-axle unit and O-ring. Designed as a genuine replacement, it maintains optimal transmission performance. Made to fit perfectly with your rear mech, this component helps extend the life of your Shimano drivetrain with...
                    £6.61
                    £6.99
                    £6.61
                    Save £0.38
                  • Shimano RD-M9000 P-Cover unit, rear derailleur spare component for Shimano bicycle derailers.Shimano RD-M9000 rear derailleur P-cover unit replacement component for bike gear shifting, Shimano spares part.

                      Shimano RD-M9000 P-Cover Unit Replacement for Rear Derailleur Spares

                      The Shimano Spares RD-M9000 P-cover unit is an essential replacement part designed to maintain your bike’s rear mech performance. Crafted with Shimano’s precision, it ensures perfect fit and durability. Keep your transmission running smoothly with this genuine component, ideal for repairing or upgrading your...
                      £11.34
                      £11.99
                      £11.34
                      Save £0.65
                    • Shimano Spares RD-M9000 bracket axle unit for rear derailleur replacement, showing metallic component with detailed parts.Shimano Spares RD-M9000 bracket axle unit for rear derailleur replacement, showing the small metal component on a white background.

                        Shimano Spares RD-M9000 Bracket Axle Unit for Normal Type Rear Derailleur Replacement

                        The Shimano Spares RD-M9000 bracket axle unit is an essential replacement component designed for normal type rear derailleurs. Engineered by Shimano, it ensures perfect compatibility and reliable performance. Made from high-quality materials, this genuine Shimano part guarantees durability and smooth operation for your bike's...
                        £24.56
                        £25.99
                        £24.56
                        Save £1.43
                      • Shimano RD-M9000 rear derailleur nose replacement part for bike components, genuine Shimano spare for precise shifting.Shimano RD-M9000 rear derailleur nose replacement part for bicycle components, genuine Shimano spares.

                          Shimano RD-M9000 Rear Derailleur Nose Replacement Part Genuine Spares

                          The Shimano Spares RD-M9000 nose is a genuine replacement part designed to ensure smooth and reliable rear mech performance. Crafted by Shimano, it guarantees compatibility and durability for your transmission system. Maintaining your bike's rear derailleur with this authentic component helps sustain precise gear...
                          £0.94
                          £0.99
                          £0.94
                          Save £0.05
                        • Shimano RD-M9000 P-Seal Ring spare component for rear derailleur protection and performance in bicycle components.Shimano RD-M9000 P-Seal Ring spare for rear derailleur components, used to protect and enhance derailleur performance.

                            Shimano RD-M9000 P-Seal Ring Spare for Rear Derailleur Protection and Performance

                            The Shimano Spares RD-M9000 P-seal ring ensures a perfect fit for your rear mech, maintaining smooth transmission performance. This genuine Shimano part guarantees durability and reliability for your bike’s drivetrain. Designed specifically for Shimano components, it preserves the integrity of your rear derailleur, protecting...
                            £1.88
                            £1.99
                            £1.88
                            Save £0.11
                          • Shimano RD-M9000 rear derailleur P-tension spring, genuine replacement component for bike gear shifting.Shimano RD-M9000 rear derailleur P-tension spring, genuine replacement component, shown with metal coil and mounting points.

                              Shimano RD-M9000 Rear Derailleur P-Tension Spring Genuine Replacement Part

                              Keep your bike's rear derailleur performing smoothly with the genuine Shimano RD-M9000 P-tension spring. Designed for precise tension adjustment, it ensures reliable shifting and optimal chain alignment. Crafted as an authentic Shimano component, this spare part guarantees durability and perfect compatibility with your transmission...
                              £3.77
                              £3.99
                              £3.77
                              Save £0.22
                            • Shimano RD-M9000 bracket axle for rear derailleur spare part, close-up of the Shimano bike component in black and silver.Shimano RD-M9000 bracket axle for direct mount rear derailleur, bicycle component spare part with metal construction.

                                Shimano RD-M9000 Bracket Axle 2 Direct Mount Rear Derailleur Spare Part

                                The Shimano Spares RD-M9000 bracket axle 2 is designed for direct mount type rear mechs, ensuring precise and reliable transmission performance. This genuine Shimano replacement part guarantees perfect compatibility and durability for your bike's drivetrain. What It’s Good For Maintaining optimal rear derailleur alignment...
                                £5.65
                                £5.99
                                £5.65
                                Save £0.34
                              • Shimano RD-M9000 SGS inner plate replacement part for rear derailleur, shown in close-up image.Shimano RD-M9000 SGS rear derailleur inner plate replacement part for bike components, showing detailed metal gear piece.

                                  Shimano RD-M9000 SGS Inner Plate Replacement Part for Rear Derailleur

                                  The Shimano Spares RD-M9000 inner plate SGS ensures precise rear mech performance and smooth shifting. This genuine replacement part maintains your bike's transmission reliability and durability. What It’s Good For Restoring Shimano rear mech functionality with an authentic replacement Maintaining smooth and accurate gear...
                                  £9.44
                                  £9.99
                                  £9.44
                                  Save £0.55
                                • Shimano Spares RD-M9000 XTR GS Type inner plate for rear derailleur, bike component replacement part, close-up of the metal gear piece.Shimano Spares RD-M9000 XTR GS rear derailleur inner plate component for bicycle gear shifting.

                                    Shimano Spares RD-M9000 XTR GS Type Inner Plate Rear Derailleur Replacement Part

                                    The Shimano Spares RD-M9000 XTR Inner plate, GS type, ensures smooth and reliable rear derailleur performance. This genuine replacement part is designed for precise gear shifts and durability. Made by Shimano, it fits perfectly into your existing setup, maintaining optimal transmission efficiency and extending...
                                    £9.44
                                    £9.99
                                    £9.44
                                    Save £0.55
                                  • Shimano Spares RD-M9050 P-Cover Unit for rear derailleur, genuine replacement component for Shimano bicycle components.Shimano Spares RD-M9050 rear derailleur P-Cover unit, genuine replacement component for bike rear mech, close-up view.

                                      Shimano Spares RD-M9050 P-Cover Unit Genuine Rear Mech Replacement Part

                                      The Shimano Spares RD-M9050 P-cover unit ensures reliable protection and smooth performance for your rear mech. Designed as a genuine replacement part, it maintains the integrity of your transmission system. Crafted with precision, this unit fits perfectly and supports optimal gear shifting, extending the...
                                      £21.72
                                      £22.99
                                      £21.72
                                      Save £1.27
                                    • Shimano RD-M9050 P-Tension Spring for rear derailleur, replacement spare part showing metallic spring component.Shimano RD-M9050 P-Tension spring for rear derailleur components, used for derailleur tension adjustment.

                                        Shimano RD-M9050 P-Tension Spring Replacement for Rear Derailleur Spares

                                        The Shimano Spares RD-M9050 P-tension spring ensures optimal performance for your rear mech. Designed as a genuine replacement part, it maintains smooth gear shifting and reliable transmission function. Made by Shimano, this component fits precisely and offers durability for long-lasting use. Ideal for keeping...
                                        £3.77
                                        £3.99
                                        £3.77
                                        Save £0.22
                                      • Shimano RD-M9050 rear derailleur boot cover, genuine replacement spare part for bike components.Shimano RD-M9050 rear derailleur boot cover, genuine replacement spare part for bike components, shown in black.

                                          Shimano RD-M9050 Rear Derailleur Boot Cover Genuine Replacement Spare Part

                                          Protect your Shimano RD-M9050 rear derailleur with this genuine boot cover, designed for durability and perfect fit. Ensure smooth transmission performance by replacing worn parts with this authentic component. What It’s Good For Extending the life of your RD-M9050 rear mech Maintaining optimal gear...
                                          £2.82
                                          £2.99
                                          £2.82
                                          Save £0.17
                                        • Shimano RD-M9050 P-Seal Ring replacement component for rear derailleur, durable bike shifter spare part.Shimano RD-M9050 P-Seal Ring replacement component for rear derailleur, showcasing a small metal seal part.

                                            Shimano RD-M9050 P-Seal Ring Replacement Part for Rear Derailleur Spares

                                            The Shimano Spares RD-M9050 P-seal ring ensures a perfect fit for your rear mech, maintaining smooth and reliable shifting performance. This genuine Shimano part guarantees durability and compatibility with your transmission system. What It’s Good For Maintaining optimal rear mech function Ensuring long-lasting performance...
                                            £1.88
                                            £1.99
                                            £1.88
                                            Save £0.11
                                          • Shimano RD-M9050 inner plate for rear derailleur replacement, showing the metal component with gear teeth and mounting holes.Shimano RD-M9050 inner plate for rear derailleur, bike component spare part, made by Shimano Spares.

                                              Shimano RD-M9050 Inner Plate SGS Replacement for Rear Derailleur Spares

                                              The Shimano Spares RD-M9050 inner plate SGS ensures precise shifting and reliable performance for your rear mech. Designed as a genuine Shimano replacement, it maintains your bike’s transmission efficiency. Crafted to fit seamlessly with the RD-M9050 model, this inner plate helps extend the lifespan...
                                              £37.79
                                              £39.99
                                              £37.79
                                              Save £2.20
                                            • Shimano RD-M9050 GS rear derailleur inner plate replacement component for bike gears, part of Shimano Spares collection.Shimano RD-M9050 GS rear derailleur inner plate replacement component, showing detailed metal part for Shimano bike gear system.

                                                Shimano RD-M9050 GS Inner Plate Replacement Part for Rear Derailleur

                                                The Shimano Spares RD-M9050 inner plate GS is a genuine replacement part designed to maintain the performance of your rear mech. Crafted with precision, it ensures seamless gear shifting and reliable transmission function. Perfect for riders needing a durable and exact fit for their...
                                                £37.79
                                                £39.99
                                                £37.79
                                                Save £2.20
                                              • Shimano RD-T4000 silver outer plate for rear derailleur, replacement component for bike gear mechanisms.Shimano RD-T4000 silver outer plate replacement part for rear derailleur, component for bike gear shifting system.

                                                  Shimano RD-T4000 Outer Plate Silver Replacement Part for Rear Mech

                                                  Upgrade your bike's performance with the Shimano Spares RD-T4000 outer plate in sleek silver. Designed to fit seamlessly, this genuine Shimano replacement part ensures reliable rear mech function and smooth gear shifts every ride. Crafted for durability, it helps maintain optimal transmission efficiency. What...
                                                  £5.65
                                                  £5.99
                                                  £5.65
                                                  Save £0.34
                                                • Shimano Rdm4000 Pulley Bolt Set Spares & AccessoriesShimano Spares RD-M4000 pulley bolt set | Swinnerton Cycles

                                                    Shimano Spares RD-M4000 Rear Derailleur Pulley Bolt Set for Smooth Shifting

                                                    Ensure smooth gear shifts with the Shimano Spares RD-M4000 pulley bolt set. Designed for durability and perfect fit, it maintains your rear mech's optimal performance. What It’s Good For Replacing worn or damaged pulley bolts on RD-M4000 rear mech Maintaining smooth and reliable transmission...
                                                    £1.88
                                                    £1.99
                                                    £1.88
                                                    Save £0.11
                                                  • Shimano RD-M4000 SGS rear derailleur inner plate replacement part for bicycle components.Shimano RD-M4000 SGS rear derailleur inner plate replacement component for bike gear shifting.

                                                      Shimano RD-M4000 SGS Rear Derailleur Inner Plate Replacement Spares

                                                      The Shimano Spares RD-M4000 inner plate, SGS is an essential component designed to maintain the performance of your rear mech. Made by Shimano, this genuine replacement ensures durability and precise fit. Keep your transmission running smoothly by replacing worn or damaged parts with this...
                                                      £3.77
                                                      £3.99
                                                      £3.77
                                                      Save £0.22
                                                    • Shimano Altus RD-M370 rear derailleur tension and guide pulley set, bicycle components for smooth gear shifting.Shimano Altus RD-M370 rear derailleur tension and guide pulley set for bicycle gear shifting components.

                                                        Shimano Altus RD-M370 Rear Derailleur Tension and Guide Pulley Set Replacement

                                                        Upgrade your bike’s performance with the Shimano Altus RD-M370 tension and guide pulley set. Designed as a genuine replacement, it ensures smooth shifting and reliable transmission for your rear derailleur. Crafted to fit the Altus RD-M370 rear derailleur perfectly, this set enhances drivetrain efficiency...
                                                        £4.84
                                                        £5.99
                                                        £4.84
                                                        Save £1.15
                                                      • Shimano Fd-4400 Clamp Bolt M5 X 17 Mm Spares & AccessoriesShimano Fd-4400 Clamp Bolt M5 X 17 Mm Spares & Accessories | Swinnerton Cycles

                                                          Shimano FD-4400 Front Derailleur Clamp Bolt M5 x 17mm Replacement Spares

                                                          The Shimano FD-4400 Clamp Bolt M5 x 17 mm is a reliable genuine replacement part designed to keep your bike's transmission running smoothly. Crafted for durability, it ensures a secure fit for your rear mech. Easy to install and made by Shimano, this clamp...
                                                          £1.99
                                                          £1.99
                                                        • Shimano Tourney TY RD-A070 rear derailleur tension and guide pulley set for bike components, showing metal pulleys and mounting hardware.Shimano Tourney TY RD-A070 rear derailleur tension and guide pulley set for bicycle components on a black background.

                                                            Shimano Tourney TY RD-A070 Rear Derailleur Tension & Guide Pulley Set

                                                            The Shimano Tourney TY RD-A070 tension and guide pulley set ensures smooth and reliable shifting for your rear derailleur. Crafted as a genuine Shimano replacement part, it maintains optimal performance and durability. Designed specifically for the RD-A070 rear derailleur, this set is essential for...
                                                            £4.84
                                                            £5.99
                                                            £4.84
                                                            Save £1.15
                                                          • Shimano RD-M670 B-Axle replacement part for direct mount rear derailleur, bike component, Shimano Spares, close-up of the axle.Shimano RD-M670 B-Axle replacement part for direct mount rear derailleur, bicycle component, Shimano Spares product.

                                                              Shimano RD-M670 B-Axle 2 Replacement Part for Direct Mount Rear Mech

                                                              The Shimano Spares RD-M670 B-axle 2 is a genuine replacement part designed specifically for direct mount rear mechs. This component ensures reliable transmission performance and durability. Engineered by Shimano, it maintains the high standards of precision and quality that riders expect from their gear....
                                                              £7.55
                                                              £7.99
                                                              £7.55
                                                              Save £0.44
                                                            • Shimano Deore rear derailleur tension and guide pulley set, bicycle components for smooth gear shifting.Shimano Deore RD-T610 rear derailleur tension and guide pulley set for bike components, featuring durable metal and precise construction.

                                                                Shimano Deore RD-T610 Rear Derailleur Tension & Guide Pulley Set Replacement

                                                                Upgrade your Shimano Deore RD-T610 with this genuine tension and guide pulley set, designed to ensure smooth and precise shifting. Made to fit perfectly, it maintains the performance and reliability of your rear derailleur. Crafted by Shimano, these pulleys are essential for optimal transmission...
                                                                £7.29
                                                                £8.99
                                                                £7.29
                                                                Save £1.70
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