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

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  • Shimano CUES RD-U4010 rear derailleur for 9/10-speed bikes, with shadow design, E-bike rated, mounted on a bike drivetrain.Shimano CUES RD-U4010 rear derailleur for 9/10-speed bikes, featuring shadow design and e-bike compatibility.

      Shimano CUES RD-U4010 Rear Derailleur 9/10-Speed Shadow Design E-Bike Rated

      The Shimano CUES RD-U4010 rear derailleur is engineered for riders seeking reliable performance and durability in mid-grade MTB setups. Featuring the innovative Shadow design, it offers a low-profile silhouette that reduces the risk of damage while improving clearance on rugged trails. Its lightweight aluminum...
      £42.39
      £44.99
      £42.39
      Save £2.60
    • Shimano Rd-U3020 Cues Rear Derailleur 9-Speed Rear MechShimano CUES RD-U3020 CUES rear derailleur, SGS long cage, 9-speed | Swinnerton Cycles

        Shimano CUES RD-U3020 SGS Long Cage Rear Derailleur 9-Speed MTB Linkglide

        The Shimano CUES RD-U3020 rear derailleur is engineered for riders seeking reliable and efficient shifting performance on their mountain bikes. Featuring the SGS long cage design, it provides exceptional chain capacity ideal for 9-speed drivetrains, ensuring smooth gear changes across a wide range of...
        £27.89
        £34.99
        £27.89
        Save £7.10
      • Shimano ESSA RD-U2000 GS rear derailleur for 1x MTB 8-speed bikes, black, with 45T capacity for HG chains.Shimano ESSA RD-U2000 GS rear derailleur for 1x MTB 8-speed bikes, black, designed for 45T HG chains, durable component.

          Shimano ESSA RD-U2000 GS Rear Derailleur 45T for 1x MTB 8-Speed HG Chains Black

          The Shimano ESSA RD-U2000 rear derailleur brings precision and smooth performance to your mountain biking experience. Engineered for 1x drivetrains and compatible with HG 8-speed chains, it features oversize tension and guide pulleys that minimize noise and wear, ensuring durability. Its light-action operation and...
          £37.41
          £42.99
          £37.41
          Save £5.58
        • Shimano Tourney TY RD-TZ500 6-speed MTB rear derailleur mounted on bike, showcasing direct-mount design and gear mechanism.Shimano Tourney TY RD-TZ500 6-speed MTB rear derailleur mounted on bike, showing black component with metal cage and mounting bolt.

            Shimano Tourney TY RD-TZ500 6-Speed Direct-Mount Rear Derailleur for MTB Bikes

            The Shimano Tourney TY RD-TZ500 6-Speed Direct-Mount Rear Derailleur delivers reliable performance for MTB riders seeking smooth and precise gear changes. Designed for durability and efficiency, it supports a wide gear range with its GS cage and 28 tooth sprockets, ensuring versatility on varied...
            £18.20
            £27.99
            £18.20
            Save £9.79
          • Shimano Rd-Tz500 6-Speed Rear Derailleur With Mounting Bracket Rear MechShimano Tourney / TY RD-TZ500 6-Speed Rear Derailleur With Mounting Bracket | Swinnerton Cycles

              Shimano Tourney TY RD-TZ500 6-Speed Rear Derailleur with Mounting Bracket for MTB

              The Shimano Tourney TY RD-TZ500 6-Speed Rear Derailleur is designed for smooth and reliable shifting on your MTB. Featuring SIS rear index shifting, it ensures precise gear changes that enhance your riding experience. Its GS cage accommodates wide range gearing up to 28 tooth...
              £18.20
              £27.99
              £18.20
              Save £9.79
            • Shimano Rd-Tx800 Tourney Tx Rear Derailleur Direct Mount Silver Rear MechShimano Tourney / TY RD-TX800 Tourney TX Rear Derailleur, Direct Mount, Silver | Swinnerton Cycles

                Shimano Tourney TX RD-TX800 Rear Derailleur Direct Mount 8-Speed Silver

                The Shimano Tourney TX RD-TX800 Rear Derailleur offers smooth and reliable shifting for your mountain bike. Designed with oversized 13-tooth pulleys, it reduces noise and wear while providing a wide gear range. Its direct mount silver finish enhances durability and style, ensuring consistent performance...
                £20.29
                £27.99
                £20.29
                Save £7.70
              • Shimano Rd-T8000 Xt Trekking Rear Derailluer Sgs Long Cage 10-Speed Rear MechShimano Deore XT RD-T8000 XT trekking rear derailleur, SGS long cage, 10-speed | Swinnerton Cycles

                  Shimano Deore XT RD-T8000 10-Speed MTB Rear Derailleur SGS Long Cage Direct Mount

                  The Shimano Deore XT RD-T8000 rear derailleur combines precision engineering with durable materials to deliver reliable shifting performance for 10-speed MTB setups. Its SGS long cage design offers a 47T capacity, accommodating a wide range of gears and ensuring smooth transitions across all terrain....
                  £84.99
                  £84.99
                • Shimano Rd-T6000 Deore 10-Speed Rear Derailleur Sgs Black Rear MechShimano Deore RD-T6000 Deore Trekking rear derailleur, SGS, black 10 speed | Swinnerton Cycles

                    Shimano Deore RD-T6000 SGS Rear Derailleur 10-Speed Trekking MTB Shadow Design

                    The Shimano Deore RD-T6000 rear derailleur is engineered for precision and durability, making it an essential component for any trekking enthusiast. Featuring a wide link Shadow design and Dyna-Sys 10-speed compatibility, it offers smooth and reliable shifting performance. Its double servo-panta mechanism ensures light,...
                    £56.55
                    £59.99
                    £56.55
                    Save £3.44
                  • SRAM NX Eagle 12-speed MTB rear derailleur in black with X-HORIZON and Type-3 clutch for smooth gear shifting.SRAM NX Eagle 12-speed MTB rear derailleur in black with X-HORIZON and Type-3 clutch, showcasing its design and construction.

                      SRAM NX Eagle Rear Derailleur 12 Speed MTB Black with X-HORIZON™ & Type-3 Clutch

                      Experience precision and reliability with the SRAM Rear Derailleur NX Eagle 12 Speed in sleek black, designed specifically for MTB enthusiasts seeking top-tier performance. This derailleur incorporates SRAM’s innovative X-HORIZON™ design, engineered to maintain a stable and consistent chain line for smoother, more accurate...
                      £101.58
                      £117.00
                      £101.58
                      Save £15.42
                    • Sram X1 Rear Derailleur Type 2.1 11 Speed Rear MechSRAM X1 Rear Derailleur - Type 2.1 - 11 Speed: 11 SPEED | Swinnerton Cycles

                        SRAM X1 Type 2.1 Rear Derailleur 11 Speed MTB with X-HORIZON & CAGE LOCK Technology

                        The SRAM X1 Rear Derailleur - Type 2.1 offers precise and reliable shifting performance for 11-speed mountain bikes. Designed with innovative technology like the X-HORIZON system, it minimizes chain movement to deliver faster, smoother shifts while eliminating ghost shifting and reducing chain slap. Its...
                        £213.27
                        £217.00
                        £213.27
                        Save £3.73
                      • Sram X5 Rear Derailleur (10Spd) Medium Cage Black Rear MechSRAM X5 Rear Derailleur - (10spd) - Medium Cage - Black: BLACK 10SPD MEDIUM | Swinnerton Cycles

                          SRAM X5 Rear Derailleur 10-Speed MTB Medium Cage Black for Smooth Shifting

                          The SRAM X5 Rear Derailleur is designed for MTB riders seeking reliable, smooth shifting in challenging conditions. Featuring 10-speed compatibility and a medium cage, it delivers precise gear changes with SRAM’s trusted X-Glide technology, enhancing your off-road performance effortlessly. Built to withstand rugged trails,...
                          £48.30
                          £55.00
                          £48.30
                          Save £6.70
                        • Sram X5 Rear Derailleur (10Spd) Long Cage Black Rear MechSRAM X5 Rear Derailleur - (10spd) - Long Cage - Black: BLACK 10SPD LONG | Swinnerton Cycles

                            SRAM X5 10-Speed Rear Derailleur Long Cage MTB Black for Mountain Bikes

                            The SRAM X5 Rear Derailleur offers reliable 10-speed performance with a long cage design, perfect for MTB enthusiasts. Its smooth X-Glide shifting ensures precise gear changes, enhancing your off-road riding experience. Durable and efficient, it adapts seamlessly to challenging terrains. What It’s Good For...
                            £48.30
                            £55.00
                            £48.30
                            Save £6.70
                          • Sram X3 Rear Derailleur (7-8Spd) Long Cage Black Rear MechSRAM X3 Rear Derailleur - (7-8spd) Long Cage Black: BLACK 7/8 SPEED LONG | Swinnerton Cycles

                              SRAM X3 Rear Derailleur Long Cage 7-8 Speed MTB Black for Mountain Bikes

                              The SRAM X3 Rear Derailleur offers reliable shifting for 7-8 speed drivetrains. Its long cage design ensures smooth chain movement and optimal performance on mountain bikes. Built to withstand rugged trails, this black derailleur enhances your bike’s transmission with durable materials and precise engineering....
                              £17.68
                              £19.00
                              £17.68
                              Save £1.32
                            • Shimano Saint RD-M820 10-speed rear derailleur with Shadow+ design and direct mount for MTB bikes.Shimano Saint RD-M820 10-speed rear derailleur with Shadow+ design and MTB direct mount, showcasing durable metal construction.

                                Shimano Saint RD-M820 10-Speed Rear Derailleur Shadow+ Design MTB Direct Mount

                                The Shimano Saint RD-M820 is a high-performance 10-speed rear derailleur designed for serious mountain bikers seeking precision and durability. Featuring the innovative Shadow+ design, this derailleur offers a low-profile silhouette that significantly reduces the risk of damage from trail obstacles, ensuring your ride stays...
                                £149.99
                                £149.99
                              • Shimano Deore XT RD-M8150 Di2 rear derailleur with long cage for 11-speed mountain bike, Shimano Deore XT components.Shimano Deore XT RD-M8150 Di2 rear derailleur with long cage for 11-speed drivetrain, Shimano Deore XT components, shadow+ technology.

                                  Shimano Deore XT RD-M8150 Di2 Rear Derailleur SGS Long Cage 11-Speed Shadow+

                                  The Shimano Deore XT RD-M8150 Di2 rear derailleur sets a new standard in mountain biking performance with its advanced digital integration. Designed for 11-speed drivetrains, this SGS long cage derailleur delivers seamless, precise shifting thanks to its electronic Di2 system, ensuring smooth gear changes...
                                  £325.38
                                  £329.99
                                  £325.38
                                  Save £4.61
                                • Shimano Rd-M8130 Xt Link Glide 11-Speed Rear Derailleur Shadow+ Sgs For Single Rear MechShimano Deore XT RD-M8130 XT Link Glide 11-speed rear derailleur, Shadow+, SGS, for single | Swinnerton Cycles

                                    Shimano Deore XT RD-M8130 Link Glide 11-Speed Shadow+ SGS Rear Derailleur for Single Chainring

                                    The Shimano Deore XT RD-M8130 XT Link Glide rear derailleur is engineered for riders who demand precision and durability on every trail. Featuring Shadow+ technology, this 11-speed derailleur offers a super low profile design that ensures smooth, fast shifting with minimal chain bounce even...
                                    £108.40
                                    £109.99
                                    £108.40
                                    Save £1.59
                                  • Shimano Deore XT RD-M8120 12-speed MTB rear derailleur with Shadow+ SGS design, mounted on a bicycle drivetrain.Shimano Deore XT RD-M8120 12-speed MTB rear derailleur with Shadow+ SGS design, mounted on a mountain bike drivetrain.

                                      Shimano Deore XT RD-M8120 12-Speed MTB Rear Derailleur Shadow+ SGS Double

                                      The Shimano Deore XT RD-M8120 is a premium 12-speed rear derailleur designed specifically for MTB enthusiasts seeking top-tier performance and reliability. Featuring the innovative Shadow+ technology, this derailleur boasts a sleek, low-profile design that ensures smooth and precise shifting even in the most demanding...
                                      £108.40
                                      £109.99
                                      £108.40
                                      Save £1.59
                                    • Shimano Rd-M8050 Xt Di2 E-Tube Rear Derailluer Gs Medium Cage Shadow+ 11-Speed Rear MechShimano Rd-M8050 Xt Di2 E-Tube Rear Derailluer Gs Medium Cage Shadow+ 11-Speed Rear Mech

                                        Shimano Deore XT RD-M8050 Di2 E-Tube Rear Derailleur GS Medium Cage 11-Speed Shadow+

                                        The Shimano Deore XT RD-M8050 XT Di2 is a cutting-edge 11-speed rear derailleur designed for mountain biking enthusiasts who demand precision and reliability. Featuring Digital Integrated Intelligence (Di2), this rear mech offers programmed automatic shifting that ensures smooth, fast, and effortless gear changes at...
                                        £305.54
                                        £309.99
                                        £305.54
                                        Save £4.45
                                      • Shimano Rd-M5130 Deore Link Glide 10-Speed Rear Derailleur Shadow+ Gs For Single Rear Mech

                                          Shimano Deore RD-M5130 Link Glide 10-Speed Shadow+ GS Rear Derailleur for 1x MTB

                                          The Shimano Deore RD-M5130 Deore Link Glide 10-speed rear derailleur delivers exceptional shifting performance tailored for mountain biking enthusiasts. Its Shadow+ technology offers a sleek, low-profile design that minimizes chain bounce, ensuring smooth and stable gear changes even on the roughest trails. Engineered with...
                                          £47.08
                                          £49.99
                                          £47.08
                                          Save £2.91
                                        • Shimano Deore RD-M5100 11-speed MTB rear derailleur with Shadow+ technology and long cage, mounted on a mountain bike.Shimano Deore RD-M5100 11-speed MTB rear derailleur with Shadow+ technology and long cage for mountain biking.

                                            Shimano Deore RD-M5100 11-Speed MTB Rear Derailleur Shadow+ SGS Long Cage

                                            The Shimano Deore RD-M5100 rear derailleur delivers reliable 11-speed shifting designed for mountain biking enthusiasts seeking precision and durability. Featuring the innovative Shadow+ technology, its low profile and optimized slant angle ensure smooth and effortless gear changes even on the toughest trails. The chain...
                                            £51.85
                                            £54.99
                                            £51.85
                                            Save £3.14
                                          • Shimano Rd-M370 Altus Rear Derailleur 9-Speed Sgs Black Rear MechShimano Acera RD-M370 Altus rear derailleur, 9-speed, SGS, black | Swinnerton Cycles

                                              Shimano Acera RD-M370 Altus 9-Speed SGS Rear Derailleur for MTB Bikes Black

                                              The Shimano Acera RD-M370 Altus rear derailleur is engineered for reliable performance on 9-speed drivetrains, ideal for both mountain biking and everyday riding. Its wide link design enhances rigidity and durability, ensuring long-lasting service. Equipped with 11-tooth pulleys, it reduces chain noise and pulley...
                                              £27.89
                                              £34.99
                                              £27.89
                                              Save £7.10
                                            • Shimano M3100 Alivio 9Spd Shadow Sgs Rear MechShimano Alivio RD-M3100 Alivio rear derailleur, 9-speed, Shadow design, SGS long cage | Swinnerton Cycles

                                                Shimano Alivio RD-M3100 9-Speed Rear Derailleur SGS Long Cage Shadow Design MTB

                                                The Shimano Alivio RD-M3100 rear derailleur is engineered to deliver reliable, precise shifting for 9-speed mountain bike drivetrains. Its Shadow design offers a sleek, low-profile silhouette that minimizes exposure to trail obstacles, reducing the risk of damage during rugged rides. Built with a wide...
                                                £39.15
                                                £44.99
                                                £39.15
                                                Save £5.84
                                              • SRAM GX T-Type Eagle AXS 12-speed MTB rear derailleur with battery mount, black metal and plastic components, mounted on bikeSRAM GX T-Type Eagle AXS 12-speed MTB rear derailleur with battery mount, black metal and plastic components, mounted on bike frame.

                                                  SRAM GX T-Type Eagle AXS Rear Derailleur 12-Speed MTB (Battery Not Included)

                                                  The SRAM Rear Derailleur GX T-Type Eagle AXS 12 speed redefines the mountain biking experience by combining advanced technology with rugged durability. Designed specifically for MTB enthusiasts, this rear mech offers seamless shifting and unmatched reliability under the most demanding conditions. Its innovative hangerless...
                                                  £410.92
                                                  £430.00
                                                  £410.92
                                                  Save £19.08
                                                • Sram Rear Derailleur X0 T-Type Eagle Axs 12 Speed (Battery Not Included) Rear Mech

                                                    SRAM X0 T-Type Eagle AXS Rear Derailleur 12 Speed MTB Wireless 2023 (Battery Not Included)

                                                    Experience the next level of mountain biking precision with the SRAM Rear Derailleur X0 T-Type Eagle AXS 12 speed. Designed for serious riders who demand unmatched durability and smooth performance, this derailleur integrates seamlessly with your bike’s drivetrain to deliver flawless gear changes every...
                                                    £558.91
                                                    £590.00
                                                    £558.91
                                                    Save £31.09
                                                  • Sram Rear Derailleur Xx T-Type Eagle Axs 12 Speed (Battery Not Included) Rear Mech

                                                      SRAM XX T-Type Eagle AXS Rear Derailleur 12 Speed MTB (Battery Not Included) 2023

                                                      The SRAM Rear Derailleur XX T-Type Eagle AXS 12 speed revolutionizes mountain biking drivetrain performance with its innovative design and robust build. Crafted to integrate seamlessly with the cassette through a groundbreaking Hangerless Interface, this derailleur mounts directly around the wheel axle, delivering unmatched...
                                                      £652.27
                                                      £695.00
                                                      £652.27
                                                      Save £42.73
                                                    • Sram Rear Derailleur Xx Sl T-Type Eagle Axs 12 Speed (Battery Not Included) Rear Mech

                                                        SRAM XX SL T-Type Eagle AXS Rear Derailleur 12 Speed MTB 2023 (Battery Not Included)

                                                        The SRAM Rear Derailleur XX SL T-Type Eagle AXS 12 speed revolutionizes mountain bike shifting with its innovative design and cutting-edge technology. Engineered specifically for high-performance MTB applications, this derailleur integrates seamlessly with the cassette through its pioneering Hangerless Interface, which mounts directly around...
                                                        £667.62
                                                        £695.00
                                                        £667.62
                                                        Save £27.38
                                                      • Sram Gx Eagle Axs Rear Derailleur 12 Speed Lunar Max 52T (Battery Not Included): Lunar Rear MechSRAM GX Eagle AXS Rear Derailleur 12 Speed Lunar Max 52T (Battery Not Included): LUNAR | Swinnerton Cycles

                                                          SRAM GX Eagle AXS 12 Speed Rear Derailleur Lunar Max 52T Wireless MTB

                                                          The SRAM GX Eagle AXS Rear Derailleur 12 Speed Lunar Max 52T offers precision and reliability for mountain biking enthusiasts who demand flawless shifting performance. Designed with advanced AXS technology, this derailleur provides seamless wireless electronic shifting, empowering riders to tackle any terrain with...
                                                          £347.04
                                                          £361.00
                                                          £347.04
                                                          Save £13.96
                                                        • Sram Xx1 Eagle 12 Speed Max 52T Rear MechSRAM Rear Derailleur XX1 Eagle 12 speed Max 52T: LUNAR 12 SPEED | Swinnerton Cycles

                                                            SRAM XX1 Eagle Rear Derailleur 12-Speed Max 52T Lunar MTB Bike Component

                                                            The SRAM Rear Derailleur XX1 Eagle 12 speed Max 52T in Lunar offers unmatched precision and durability for serious mountain bikers. Engineered to elevate your riding experience, this rear mech is designed to handle the most demanding terrains with flawless shifting performance. Its innovative...
                                                            £303.00
                                                            £303.00
                                                          • Sram X01 Eagle 12 Speed Max 52T Rear MechSram X01 Eagle 12 Speed Max 52T Rear Mech

                                                              SRAM X01 Eagle 12-Speed Rear Derailleur Max 52T for MTB Drivetrains - Red

                                                              The Sram X01 Eagle 12 Speed Max 52T Rear Mech redefines precision and performance for mountain biking enthusiasts. Designed with an updated cage architecture, this rear derailleur ensures superior chain retention and smoother, more accurate shifts. Compatible with the latest 10-52t cassettes as well...
                                                              £238.41
                                                              £247.00
                                                              £238.41
                                                              Save £8.59
                                                              • Red
                                                              • Lunar
                                                            • Sram Rear Derailleur Xx1 Eagle Axs 12 Speed Rear MechSRAM Rear Derailleur XX1 Eagle AXS 12 speed (Battery Not Included): BLACK 12 SPEED | Swinnerton Cycles

                                                                SRAM XX1 Eagle AXS Rear Derailleur 12-Speed Electronic MTB, Battery Not Included

                                                                The SRAM Rear Derailleur XX1 Eagle AXS 12 speed redefines mountain bike transmission technology with its advanced electronic shifting system. Designed to be the intelligent core of the AXS ecosystem, it offers precision and reliability far beyond a traditional mechanical derailleur. Featuring a shorter...
                                                                £715.28
                                                                £742.00
                                                                £715.28
                                                                Save £26.72
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