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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  • Sram Rear Derailleur Force Xplr Axs D2 12-Speed Max 44T (Battery Not Included) Rear Mech

      SRAM Force XPLR AXS D2 Rear Derailleur 12-Speed 1x Max 44T Iridescent 2023

      Discover the SRAM Rear Derailleur Force XPLR AXS D2 12-Speed Max 44T, a masterpiece of engineering designed for riders who demand precision and durability. This rear mech is crafted specifically for 1x drivetrains, compatible with 10-44T or 10-36T cassettes, ensuring a streamlined and efficient...
      £288.57
      £322.00
      £288.57
      Save £33.43
    • Sram Rear Derailleur Red Xplr Etap Axs D1 12-Speed Max 44T (Battery Not Included) Rear Mech

        SRAM Red XPLR eTap AXS D1 Rear Derailleur 12-Speed 44T Wireless MTB Road

        Experience seamless shifting on every terrain with the SRAM Rear Derailleur Red XPLR Etap AXS D1 12-Speed Max 44T. Designed specifically for the adventurous rider, this rear mech excels on both road and off-road conditions thanks to its 1x-specific build tailored for the XPLR...
        £579.26
        £644.00
        £579.26
        Save £64.74
      • Sram Rival Axs Rear Derailleur D1 12-Speed Medium Cage (Battery Not Included) Rear MechSram Rival Axs Rear Derailleur D1 12-Speed Medium Cage (Battery Not Included) Rear Mech | Swinnerton Cycles

          SRAM Rival AXS D1 12-Speed Rear Derailleur Medium Cage Wireless Road Mech Battery Not Included

          The Sram Rival AXS Rear Derailleur D1 12-Speed Medium Cage redefines precision and reliability in road cycling components. Engineered with wireless electronic eTap shift logic, it offers intuitive shifting that adapts seamlessly to your riding style. Whether you're running a 1x or 2x drivetrain,...
          £199.99
          £300.00
          £199.99
          Save £100.01
        • Shimano Rd-M7100 Slx 12-Speed Rear Derailleur Shadow Sgs For Single Rear MechShimano SLX RD-M7100 SLX 12-speed rear derailleur, Shadow+ SGS, for single | Swinnerton Cycles

            Shimano SLX RD-M7100 Shadow+ SGS 12-Speed Rear Derailleur for 1x MTB Drivetrains

            The Shimano SLX RD-M7100 Shadow+ SGS 12-speed rear derailleur is engineered for riders seeking precise and reliable shifting on demanding mountain trails. Its super low profile design and optimized slant angle deliver smooth, light shifting action that enhances your riding experience. Equipped with Shadow...
            £78.00
            £84.99
            £78.00
            Save £6.99
          • Shimano Rd-Ft35 6/7-Speed Rear Derailleur Rear MechShimano Rd-Ft35 6/7-Speed Rear Derailleur Rear Mech

            Shimano RD-FT35 6/7-Speed Rear Derailleur for MTB Single Front Ring with SIS Indexing

            The Shimano RD-FT35 6/7-Speed Rear Derailleur offers smooth and reliable shifting for your MTB. Designed for front single ring setups, it ensures precise gear changes with SIS rear index shifting technology. Compatible with an 11T top gear and a total capacity of 17T, it...
            £16.95
            £27.99
            £16.95
            Save £11.04
          • Shimano Rd-U4020 Cues Rear Derailleur Sgs Long Cage 9-Speed Rear MechShimano CUES RD-U4020 CUES rear derailleur, SGS long cage, 9-speed | Swinnerton Cycles

              Shimano CUES RD-U4020 SGS Long Cage Rear Derailleur 9-Speed MTB E-Bike Compatible

              The Shimano CUES RD-U4020 rear derailleur is engineered for mid-grade MTB enthusiasts seeking reliable and durable performance. Featuring a SGS long cage design and compatibility with 9-speed drivetrains, this component ensures smooth and precise shifting on diverse terrain. Built with Shimano’s innovative LINKGLIDE technology,...
              £35.07
              £39.99
              £35.07
              Save £4.92
            • Shimano CUES RD-U4000 rear derailleur with medium cage for 9-speed MTB and E-bike, showcasing the Shimano branding and mechanical parts.Shimano CUES RD-U4000 rear derailleur with medium cage for 9-speed mountain bikes and e-bikes, showing its durable component design.

                Shimano CUES RD-U4000 Rear Derailleur GS Medium Cage 9-Speed MTB E-Bike Compatible

                The Shimano CUES RD-U4000 rear derailleur is engineered for riders seeking reliable performance in a mid-grade MTB component. Featuring the innovative LINKGLIDE technology, this derailleur offers exceptional durability—up to 300% longer than traditional Hyperglide drivetrains—while maintaining smooth and precise shifting. Its Shadow design ensures...
                £39.46
                £44.99
                £39.46
                Save £5.53
              • Shimano Deore XT RD-M8150 Di2 12-speed rear derailleur with long cage, shadow plus design, for mountain bike componentsShimano Deore XT RD-M8150 Di2 12-speed rear derailleur with SGS long cage and Shadow+ design for mountain bike components.

                  Shimano Deore XT RD-M8150 Di2 12-Speed Rear Derailleur SGS Long Cage Shadow+

                  The Shimano Deore XT RD-M8150 Di2 rear derailleur redefines mountain biking precision with its advanced Digital Integrated Intelligence (Di2) technology. Designed for 12-speed drivetrains, this derailleur offers seamless, ultra-smooth shifting at the touch of a button, eliminating the inconsistencies of traditional mechanical cables. Its...
                  £302.94
                  £329.99
                  £302.94
                  Save £27.05
                • Shimano Deore M4120 Rear Derailleur 10/11-Speed Shadow Design Sgs Long Cage Rear MechShimano Deore M4120 Rear Derailleur 10/11-Speed Shadow Design Sgs Long Cage Rear Mech | Swinnerton Cycles

                    Shimano Deore M4120 Shadow Rear Derailleur 10/11-Speed SGS Long Cage MTB Mech

                    The Shimano Deore M4120 Rear Derailleur is engineered for riders seeking reliable and precise shifting on rugged trails. Its Shadow design ensures a sleek, low-profile fit that minimizes damage risks while delivering smooth gear changes. Compatible with both 10 and 11-speed setups, this rear...
                    £35.69
                    £41.99
                    £35.69
                    Save £6.30
                  • Shimano Acera RD-M3020 SGS 8-speed rear derailleur for mountain bikes, showcasing the lightweight Shimano component with cable attachment

                      Shimano Acera RD-M3020 SGS Rear Derailleur 8-Speed Mountain Bike Compatible

                      The Shimano Acera RD-M3020 rear derailleur offers reliable shifting performance designed specifically for mountain biking. Featuring oversized 13-tooth pulleys, it reduces noise and wear while providing a wide gear range for versatile trail riding. Its light-action operation ensures smooth, precise gear changes every time....
                      £29.69
                      £39.99
                      £29.69
                      Save £10.30
                    • Sram Rear Derailleur X01 Eagle Axs 12 Speed Max 52T (Battery Not Included): Lunar 12 Speed Rear MechSram Rear Derailleur X01 Eagle Axs 12 Speed Max 52T (Battery Not Included): Lunar 12 Speed Rear Mech

                        SRAM X01 Eagle AXS Rear Derailleur 12 Speed Max 52T Motor-Driven MTB Mech Battery Not Included - Lunar

                        The Sram Rear Derailleur X01 Eagle AXS 12 Speed Max 52T is a cutting-edge component designed to elevate your mountain biking experience. Engineered specifically for motor-driven operation, this derailleur offers unparalleled precision and customization through the AXS App, allowing riders to tailor their transmission...
                        from £459.29
                        £512.00
                        from £459.29
                        Save £52.71
                        • Lunar
                        • Red
                      • Placeholder image

                          Campagnolo Record 11-Speed Jockey Wheels Pair for 9-12 Speed Derailleurs

                          Upgrade your drivetrain with the Campagnolo Record 11X Jockey Wheels, designed for smooth and precise shifting. These jockey wheels are compatible with 9, 10, 11, and 12-speed derailleurs, ensuring versatile performance. Crafted with high-quality materials, they enhance transmission efficiency and durability for a reliable...
                          £19.36
                          £20.00
                          £19.36
                          Save £0.64
                        • Bbb Rollerboys Ceramic Sram Jockey Wheels 12T [Bdp-16] Jockey WheelsBBB BDP-16 - RollerBoys Ceramic Sram Jockey Wheels 12T | Swinnerton Cycles

                            BBB BDP-16 RollerBoys Ceramic SRAM Jockey Wheels 12T for Rear Derailleur

                            The BBB BDP-16 RollerBoys Ceramic Sram Jockey Wheels 12T offer exceptional performance for your rear derailleur system. Designed with a narrow-wide tooth profile, these jockey wheels ensure superior chain retention, reducing the risk of chain drops and improving shifting precision. Crafted from Grivory EMS...
                            £24.19
                            £39.99
                            £24.19
                            Save £15.80
                          • Shimano GRX RD-RX815 Di2 11-speed rear derailleur with Shadow+ for double chainsets, showcasing the durable component design.Shimano GRX RD-RX815 Di2 11-speed rear derailleur with Shadow+ for double chainsets on bicycle components.

                              Shimano GRX RD-RX815 Di2 11-Speed Rear Derailleur Shadow+ for Double Chainsets

                              The Shimano GRX RD-RX815 Di2 rear derailleur is engineered specifically for gravel enthusiasts seeking precision and reliability. Its low-profile Shadow Plus design not only offers a sleek aesthetic but also incorporates a chain stabilizing switch that minimizes chain bounce on rough terrain, ensuring a...
                              £261.63
                              £284.99
                              £261.63
                              Save £23.36
                            • MicroSHIFT Marvo LT M46S 9-speed MTB rear derailleur with short cage and 11-36T capacity, bike components for mountain biking

                              MicroSHIFT Marvo LT M46S 9-Speed Rear Derailleur, Short Cage, 11-36T, MTB Compatible - Black

                              The MicroSHIFT Marvo LT M46S rear derailleur is engineered to deliver reliable, smooth shifting for mountain biking and trekking enthusiasts. Its robust full metal construction ensures exceptional durability, capable of withstanding the harshest trail conditions over time. Designed to accommodate 9-speed drivetrains, this component...
                              £24.15
                              £24.99
                              £24.15
                              Save £0.84
                              • Black
                            • MicroSHIFT Estes M220 9-speed MTB rear derailleur with Shimano cable pull, showcasing the black component with mounting hardware.MicroSHIFT Estes M220 9-speed rear derailleur for mountain bikes with Shimano cable pull system.

                              MicroSHIFT Estes M220 9-Speed Rear Derailleur MTB Compatible Shimano Cable Pull - Black

                              The MicroSHIFT Estes M220 9-Speed Rear Mech is designed for riders who demand reliable and precise shifting on every ride. Its robust construction with wide-set pivots and a reinforced body ensures durability and smooth performance, even under tough conditions. Equipped with high-quality metric adjustment...
                              from £15.99
                              from £15.99
                              • Black
                            • MicroSHIFT Estes M200 9-speed MTB rear derailleur with Shimano cable pull, shown in black with mounting hardware.MicroSHIFT Estes M200 9-speed rear derailleur for mountain bikes with Shimano cable pull, durable bike components.

                              MicroSHIFT Estes M200 9-Speed Rear Derailleur for MTB Shimano Cable Pull - Black

                              The MicroSHIFT Estes M200 9-Speed Rear Mech is designed for riders seeking dependable and precise shifting. Its robust construction with wide-set pivots and a rigid cage ensures durability and responsiveness on every ride. Featuring high-quality metric adjustment hardware, it offers straightforward setup and smooth...
                              £15.99
                              £15.99
                              • Black
                            • MicroSHIFT ADVENT 9-speed rear derailleur with medium cage for commuter and touring bikes, shown in a detailed close-up.

                              MicroSHIFT ADVENT 9-Speed Rear Derailleur Medium Cage for Commuter & Touring Bikes - Black

                              The MicroSHIFT ADVENT Rear Derailleur - 9 Speed Medium Cage offers a streamlined solution for riders who prefer smooth shifting without the added resistance of a clutch mechanism. Designed specifically for 9-speed systems, this rear mech combines reliability with ease of use, making it...
                              £48.32
                              £49.99
                              £48.32
                              Save £1.67
                              • Black
                            • MicroSHIFT Advent MX rear derailleur for 10 and 11-speed mountain bike systems, showcasing durable construction and precise shifting.

                              MicroSHIFT Advent MX Rear Derailleur for 10 & 11-Speed MTB Systems Durable Precision Shifting - Black

                              The MicroSHIFT Advent MX Rear Derailleur is engineered for riders who demand durability and precision. Designed to endure the toughest terrains, it features the most robust linkage MicroSHIFT has created, ensuring reliable shifting even in the most challenging conditions. With a beefy horizontal parallelogram...
                              £53.16
                              £54.99
                              £53.16
                              Save £1.83
                              • Black
                            • MicroSHIFT Advent MX Pro rear derailleur for 10 and 11-speed mountain bike drivetrains, showcasing durable components and precise shifting.

                              MicroSHIFT Advent MX Pro Rear Derailleur for 10 & 11-Speed MTB Drivetrains - Black

                              The MicroSHIFT Advent MX Pro Rear Derailleur is engineered for riders who demand durability and precision on the toughest trails. Designed with a robust horizontal parallelogram and IGUS bushings at the pivots, it ensures smooth and reliable shifting under the most challenging conditions. The...
                              £67.65
                              £69.99
                              £67.65
                              Save £2.34
                              • Black
                            • MicroSHIFT ADVENT 9-speed clutch rear derailleur for mountain bikes, showing the black Shimano-compatible component with tension arm.

                              MicroSHIFT ADVENT 9-Speed Clutch Rear Derailleur for Mountain Bikes - Black

                              The MicroSHIFT ADVENT Clutch Rear Derailleur is engineered to meet the demands of mountain bikers who seek durability and precise performance. Featuring a 9-speed configuration, this derailleur provides smooth and reliable shifting across a wide range of gears, making it ideal for tackling diverse...
                              £67.65
                              £69.99
                              £67.65
                              Save £2.34
                              • Black
                            • MicroSHIFT Acolyte SpringLock 8-speed MTB bike rear derailleur showing its compact design and mounting hardware.

                              MicroSHIFT Acolyte SpringLock Rear Derailleur 8-Speed MTB Bike Shifter Compatible - Black

                              The MicroSHIFT Acolyte SpringLock Rear Derailleur 8 Speed revolutionizes your mountain biking experience with its advanced SpringLock system. This innovative mechanism features a custom linear rate high tension spring paired with a dual stage activation, delivering exceptional chain retention on rough trails while allowing...
                              £38.66
                              £39.99
                              £38.66
                              Save £1.33
                              • Black
                            • MicroSHIFT Sword rear derailleur cable pinch bolt for smooth shifting, component part for bicycle gear systems.

                              MicroSHIFT Sword Rear Derailleur Cable Pinch Bolt for Smooth Shifting

                              Upgrade your drivetrain with the MicroSHIFT Sword Rr Mech Cable Pinch Bolt. This essential component ensures secure cable fastening for smooth gear shifts. Designed for durability and precision, it perfectly complements your MicroSHIFT Sword groupset. What It’s Good For Reliable cable securing for consistent...
                              £8.99
                              £8.99
                            • Shimano Tiagra RD-R4000 11-speed rear derailleur for road bikes, showing the black component with mounting and pulley wheels.Shimano Tiagra RD-R4000 11-speed rear derailleur for road bikes, showing the black component with mounting hardware.

                              Shimano Tiagra RD-R4000 11-Speed Rear Derailleur for Road Bikes - Black

                              The Shimano Tiagra RD-R4000 11-speed rear derailleur delivers professional-grade performance at an accessible price point. Designed with a wide link structure, it enhances rigidity and extends durability, ensuring reliable shifting through countless rides. Its lightweight alloy body and outer link reduce overall weight without...
                              £59.70
                              £64.99
                              £59.70
                              Save £5.29
                              • Black
                            • Shimano XTR RD-M9260 Di2 STEPS 12-speed rear derailleur with SGS long cage and Hyperglide for mountain bike componentsShimano XTR RD-M9260 Di2 STEPS 12-speed rear derailleur with long cage and Hyperglide, designed for mountain bike components.

                              Shimano XTR RD-M9260 Di2 STEPS Wired 12-Speed Rear Derailleur SGS Long Cage HYPERGLIDE - Black

                              The Shimano XTR RD-M9260 Di2 STEPS wired rear derailleur redefines precision and durability for mountain biking enthusiasts seeking top-tier performance. Engineered specifically for 12-speed HYPERGLIDE drivetrains, this rear mech seamlessly integrates with your Steps Ebike system via EW-SD300 wiring, enabling flawless, clean shifting every...
                              £494.99
                              £549.99
                              £494.99
                              Save £55.00
                              • Black
                            • Shimano XTR RD-M9260 Di2 STEPS wired 11-speed LINKGLIDE SGS long cage rear derailleur for mountain bike components.Shimano XTR RD-M9260 Di2 STEPS 11-speed wired rear derailleur with long cage and LinkGlide SGS for mountain bike components.

                              Shimano XTR RD-M9260 Di2 STEPS Wired 11-Speed LINKGLIDE SGS Long Cage Rear Derailleur - Black

                              The Shimano XTR RD-M9260 Di2 STEPS wired rear derailleur is engineered for mountain bikers seeking precision and durability in their eBike drivetrain. Designed specifically for 11-speed LINKGLIDE systems, this SGS long cage rear mech offers seamless integration with your Steps eBike via EW-SD300 wiring,...
                              £494.99
                              £549.99
                              £494.99
                              Save £55.00
                              • Black
                            • Shimano Deore XT RD-M8260 Di2 STEPS wired 11-speed LINKGLIDE SGS long cage rear derailleur for mountain bike componentsShimano Deore XT RD-M8260 Di2 STEPS wired 11-speed LINKGLIDE SGS long cage rear derailleur for mountain bike components.

                              Shimano Deore XT RD-M8260 Di2 STEPS Wired 11-Speed LINKGLIDE SGS Long Cage Rear Derailleur - Black

                              The Shimano Deore XT RD-M8260 Di2 STEPS wired rear derailleur is engineered to deliver precise and reliable shifting performance for your eBike. Designed to seamlessly integrate with your Steps Ebike system via EW-SD300 wires, this 11-speed rear mech ensures smooth gear transitions and enhanced...
                              £386.99
                              £429.99
                              £386.99
                              Save £43.00
                              • Black
                            • Placeholder image

                                Hope 16T Jockey Wheel Single for Rear Mech – Smooth Gear Shifts & Durable Performance - Blue

                                Hope Jockey Wheels 16T Single offers smooth gear shifts and reliable performance. Crafted with precision, it enhances your rear mech's efficiency for seamless transmission. Designed for durability and optimal function, this component ensures consistent tension and reduces chain wear. What It’s Good For Improving...
                                £27.60
                                £30.00
                                £27.60
                                Save £2.40
                                • Blue
                                • Orange
                                • Smoke
                                • Black
                              • Enduro Bearings XD15 Direct Line Pulley Wheels for Shimano Dura Ace 12sp

                                  Enduro Bearings XD15 Ceramic-Hybrid Pulley Wheels for Shimano Dura Ace 12sp Black/Green - Black/Green

                                  Enduro Bearings XD15 Direct Line Pulley Wheels for Shimano Dura Ace 12sp Black/Green represent a significant advancement in drivetrain performance and durability. Crafted from precision machined 500 AF Delrin®, these pulleys boast exceptional mechanical strength, natural lubricity, and outstanding resistance to moisture, chemicals, and...
                                  £245.69
                                  £279.99
                                  £245.69
                                  Save £34.30
                                  • Black/Green
                                • SRAM Rear Derailleur Outer Link Kit E1 (Vanity Cover, Upper And Lower Outer Link With Bushings Including Bolts)

                                  SRAM Rear Derailleur Outer Link Kit E1 with Vanity Cover, Links, Bushings & Bolts

                                  Upgrade your SRAM FORCE XPLR AXS E1 rear derailleur with this comprehensive Outer Link Kit. It includes the vanity cover, upper and lower outer links, bushings, and bolts—everything needed for a precise and reliable replacement. Crafted to ensure smooth shifting and maintain your bike’s...
                                  £18.71
                                  £21.00
                                  £18.71
                                  Save £2.29
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