Bike Seatpost Spares & Accessories

Seatpost Spares & Accessories at Swinnerton CyclesKeep your seatpost and dropper post in perfect working order with our range of seatpost spares and accessories at Swinnerton Cycles. From shims and clamp ears to saddle clamp hardware and remote lever kits, we stock the components needed to maintain and adapt your...

Seatpost Spares & Accessories at Swinnerton Cycles

Keep your seatpost and dropper post in perfect working order with our range of seatpost spares and accessories at Swinnerton Cycles. From shims and clamp ears to saddle clamp hardware and remote lever kits, we stock the components needed to maintain and adapt your seatpost setup. Seatpost shims are particularly useful when upgrading frames or seatposts with different diameter requirements. We stock seatpost spares from Cane Creek, Trek, Bontrager, and other leading brands. Browse our full Bike Seating collection and explore Dropper Seatposts and Standard Seatposts.

Popular Seatpost Spares

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  • BBB Thestrangler BSP-80 aluminium seat clamp for 28.6-34.9mm seatposts, shown on a bicycle component with a sleek silver finish.BBB Thestrangler BSP-80 aluminium seat clamp for 28.6-34.9mm seatposts, shown installed on a bicycle frame.

    BBB Thestrangler BSP-80 Aluminium Seat Clamp for Aluminium Seatposts 28.6-34.9mm - Black

    The Bbb Thestrangler Seat Clamp [Bsp-80] is crafted from durable 6061 T6 aluminium, ensuring a secure hold for your aluminium seatposts. Its screw-on design offers easy installation and reliable adjustment. Available in diameters 28.6, 31.8, and 34.9mm, this seat clamp fits a variety of...
    £5.21
    £5.99
    £5.21
    Save £0.78
    • Black
  • Giant Propel ISC internal seat clamp cover for 2023+ Advanced and Advanced SL bike frames, made of durable black material.Giant Propel ISC internal seat clamp cover for 2023+ Advanced and Advanced SL bike frames, made of durable black components.

      Giant Propel ISC Internal Seat Clamp Cover for 2023+ Advanced & Advanced SL Frames

      Enhance your Giant Propel with this internal seat clamp cover, designed for 2023 and newer Advanced and Advanced SL frames. Crafted for a seamless fit, it maintains your bike’s sleek look while protecting vital components. What It’s Good For Protecting the internal seat clamp...
      £10.00
      £10.00
    • Fox Seatpost Transfer Upper Saddle Clamp, bike component replacement part, black metal clamp for secure saddle attachment.Fox Seatpost Transfer Upper Saddle Clamp, 2021 replacement component, showing the black clamp designed for bike saddle attachment.

        Fox Seatpost Transfer Upper Saddle Clamp 2021 Replacement Part & Accessory

        Upgrade your bike with the Fox Seatpost Transfer Upper Saddle Clamp 2021, designed for durability and precise saddle adjustment. This component ensures a secure fit and smooth performance, perfect for enhancing your ride experience. Crafted by Fox, this clamp is a reliable spare part...
        £16.25
        £16.25
      • Fox Doss Seatpost Lower Saddle Clamp spare component for secure fit on bicycle seatposts, made by Fox.Fox Doss Seatpost Lower Saddle Clamp component for secure bike saddle fit, shown in black metal with mounting hardware.

          Fox Doss Seatpost Lower Saddle Clamp Spare Accessory for Secure Fit

          The Fox Doss Seatpost Lower Saddle Clamp is a reliable component designed to secure your saddle firmly in place. Crafted with precision, it ensures optimal performance for your seatpost system. This finishing kit is an essential spare accessory, perfect for maintaining or upgrading your...
          £9.95
          £9.95
        • Giant internal battery holder set for Shimano Di2 Vector, D-Fuse, and Propel SL bikes, shown in black with mounting details.Giant internal battery holder set for Shimano Di2 Vector, D-Fuse and Propel SL bikes, showing black component with mounting features.

            Giant Internal Battery Holder Set for Shimano Di2 Vector, D-Fuse & Propel SL

            Enhance your bike’s performance with the Giant Internal Battery Holder Set for Di2. Designed for seamless internal seatpost mounting, it fits integrated seatposts in Vector, D-Fuse, and Propel Advanced SL shapes, ensuring a clean, streamlined look. Crafted to integrate perfectly with your Shimano Di2...
            £10.00
            £10.00
          • Crankbrothers Highline seatpost screw M5x1x41.5, hex replacement component for bike seatpost adjustment.

              Crankbrothers Highline Seatpost Screw M5x1x41.5 Hex Replacement Part

              The Crankbrothers Seatpost Highline Screw M5x1x41 5 Hex is engineered with precision to deliver reliable performance for your Highline seatpost. Crafted by Crankbrothers, a renowned brand in cycling components, this screw ensures a perfect fit and secure fastening. Its M5x1x41 5 Hex design provides...
              £1.00
              £1.00
            • Crankbrothers Highline seatpost maintenance kit with components for smooth performance and easy bike saddle adjustments.

                Crankbrothers Highline Seatpost Maintenance Kit for Smooth Performance

                Keep your Crankbrothers Highline seatpost performing smoothly with this essential maintenance kit. It includes all key components to ensure reliable operation and longevity. Easy to install, it helps maintain precision and comfort on every ride. What It’s Good For Replacing worn Igus guide blocks...
                £28.26
                £29.99
                £28.26
                Save £1.73
              • crank brothers crankbrothers seatpost spares s post highline crtdge valve adapt p109276

                  Crankbrothers Highline Seatpost Cartridge Valve Adapter for Easy Replacement

                  Upgrade your Crankbrothers Highline seatpost with this reliable cartridge valve adapter. Designed for easy replacement and maintenance, it ensures optimal performance and durability. What It’s Good For Maintaining smooth seatpost function Easy installation and replacement Enhancing seatpost longevity What It’s NOT Good For Not...
                  £1.99
                  £1.99
                • crank brothers crankbrothers seatpost spares s post highline 7 crtdge assy 170mm p109260

                    Crankbrothers Highline 7 Cartridge Assembly 170mm for Dropper Seatpost Replacement

                    The Crankbrothers Highline 7 Cartridge Assembly 170mm is engineered to deliver superior performance and durability for your bicycle seatpost. Designed by Crankbrothers, a leader in cycling innovation, this cartridge assembly ensures smooth and reliable operation of the Highline 7 dropper post system. Its 170mm...
                    £84.99
                    £84.99
                  • Crankbrothers Highline 3 Quill Assembly 150mm bike seatpost spare part, showing the component with mounting hardware and branding.

                      Crankbrothers Highline 3 Quill Assembly 150mm – Bike Seatpost Spare Part

                      The Crankbrothers Highline 3 Quill Assembly 150mm is expertly crafted to deliver exceptional performance and durability for your bike’s seatpost system. Designed by Crankbrothers, a trusted name known for innovative cycling components, this quill assembly guarantees a secure and stable connection that enhances your...
                      £36.99
                      £36.99
                    • Cane Creek Eesilk Post Axle Nut Spares & AccessoriesCane Creek eeSilk Post Axle Nut Silver | Swinnerton Cycles

                        Cane Creek eeSilk Seatpost Axle Nut Silver – Durable Replacement Part

                        Upgrade your Cane Creek seatpost with the eeSilk Post Axle Nut Silver. Designed for durability and precision, it ensures a secure fit and smooth performance. This essential component enhances the longevity of your seatpost while adding a sleek silver finish for a polished look....
                        £5.49
                        £5.49
                      • Crankbrothers Highline 3 200mm dropper post replacement cartridge and actuator in black, showing the components and mechanism.Crankbrothers Highline 3 200mm dropper post replacement cartridge and actuator in black, components for bike suspension system.

                          Crankbrothers Highline 3 200mm Dropper Post Replacement Cartridge & Actuator Black

                          Upgrade your Highline 3 200mm dropper post with this reliable replacement cartridge and actuator. Designed for seamless fit and optimal performance, it ensures smooth operation and durability. What It’s Good For Restoring functionality to your Highline 3 dropper post Easy installation with precise compatibility...
                          £42.99
                          £42.99
                        • Crankbrothers Highline Traction Pads Rainbow thumb grip replacement for Highline remote mountain bike components.Crankbrothers Highline Traction Pads Rainbow thumb grip replacement for Highline remote control components.

                            Crankbrothers Highline Traction Pads Rainbow – Thumb Grip Replacement for Highline Remote

                            Enhance your control with the Crankbrothers Highline Traction Pads, designed to boost thumb grip on your Highline remote. These pads reduce accidental post activations, ensuring smooth and precise adjustments every ride. Available in a stunning rainbow array of 8 colors, they let you customize...
                            £6.99
                            £6.99
                          • Crankbrothers Highline 7 Cartridge Assembly

                              Crankbrothers Highline 7 Seatpost Cartridge Assembly 200mm Replacement Part

                              The Crankbrothers Highline 7 Cartridge Assembly 200mm is a meticulously engineered component designed to elevate the functionality of your Highline 7 seatpost. Precision-crafted for durability and smooth operation, this cartridge assembly ensures your seatpost performs reliably over time, enhancing your overall riding experience. Its...
                              £84.99
                              £84.99
                            • Shimano Deore SL-MT500-L left-hand dropper seatpost lever, I-Spec EV compatible, with ergonomic design and metal construction.Shimano Deore SL-MT500-L left-hand dropper seatpost lever compatible with I-Spec EV, showcasing ergonomic design and mounting features.

                                Shimano Deore SL-MT500-L Left-Hand Dropper Seatpost Lever I-Spec EV Compatible

                                The Shimano Deore SL-MT500-L is a reliable, lightweight dropper post lever designed for smooth seatpost adjustments. Its 9 mm cable pull ensures precise control and is compatible with most dropper seatposts. The I-spec EV system allows seamless integration with brake levers. Engineered for durability...
                                £24.99
                                £24.99
                              • SDG Slater 22.2mm shim kit for JR 650 handlebars, showing metal components and packaging for bike spare parts.SDG Slater 22.2mm handlebar shim kit for JR 650 bike handlebars, showing metal spacers and installation components.

                                  SDG Slater 22.2mm Shim Kit for JR 650 Handlebars – Spares & Accessories

                                  The SDG Slater 22.2mm Shim Kit is designed to securely fit standard controls onto Slater JR 650 handlebars. Crafted from durable, lightweight nylon, it ensures a reliable and easy installation. With 4 x 15mm shims included, this kit offers a perfect fit and enhanced...
                                  £5.95
                                  £5.95
                                • Passport standard saddle clamp for twin-railed saddles and seat post accessories, showing a sturdy metal component for bike seats.Passport standard saddle clamp for twin-railed saddles and seat post accessories, showing durable metal construction and mounting hardware.

                                  Passport Standard Saddle Clamp for Twin-Railed Saddles & Seat Post Accessories - Silver

                                  The Passport Standard Saddle Clamp is designed for reliable attachment of twin-railed saddles to plain tube seat posts without micro-adjust heads. Crafted from durable ED black steel, it ensures long-lasting performance and secure mounting. Featuring twin nuts for balanced tightening and a safety top...
                                  from £2.79
                                  £2.99
                                  from £2.79
                                  Save £0.20
                                  • Silver
                                  • Black
                                • Genetic Race Seatbolt spares with integrated clamps for classic bike frames, showing metal components and mounting details.Genetic Race Seatbolt spares with integrated clamps for classic bike frames, shown in close-up detail.

                                  Genetic Race Seatbolt Spares & Accessories for Classic Bike Frames with Integrated Clamps - Chrome

                                  Enhance your bike's reliability with the Genetic Race Seatbolt Spares & Accessories. Designed for classic frames featuring integrated clamps, these seat binders provide a secure hold with 8mm bolts crafted from durable Cr-Mo steel. The fixed side includes a unique "key" that locks into...
                                  £2.99
                                  £2.99
                                  • Chrome
                                • RockShox Reverb hydraulic fluid bottle for A1-B1 post and Sprint remote maintenance, 120ml, for mountain bike components.RockShox Reverb hydraulic fluid bottle for A1-B1 post and Sprint remote maintenance, 120ml, durable components for mountain bike suspension.

                                    RockShox Reverb Hydraulic Fluid 120ml for A1-B1 Post & Sprint Remotes Maintenance

                                    Maintain smooth, reliable performance with RockShox Reverb Hydraulic Fluid. This 120ml bottle ensures your Reverb A1-B1 post and remotes operate flawlessly. Engineered for optimal hydraulic function, it prolongs the life of your seatpost and remotes while providing consistent feel and control. What It’s Good...
                                    £4.82
                                    £5.00
                                    £4.82
                                    Save £0.18
                                  • Race Face Affect R dropper post cable head and pinch barrel spares for bike components, shown in the image.Race Face Affect R dropper post cable head and pinch barrel spare components for bike suspension system.

                                      Race Face Affect R Dropper Post Cable Head & Pinch Barrel Spares Accessory

                                      Enhance your Race Face †ffect R dropper seatpost performance with this reliable cable head and pinch barrel. Designed for precise control and smooth operation, these spares ensure your seatpost functions flawlessly. Made by Race Face, this finishing kit is essential for maintaining and repairing...
                                      £4.94
                                      £4.94
                                    • crank brothers crankbrothers seatpost spares s post highline 3 crtdge assy 125mm p109250

                                        Crankbrothers Highline 3 Seatpost Cartridge Assembly 125mm for Mountain Bikes

                                        The Crankbrothers Seatpost Highline 3 Cartridge Assy 125mm is engineered to deliver exceptional performance and durability for avid cyclists. Designed by Crankbrothers, a brand renowned for quality and innovation, this cartridge assembly offers smooth and precise adjustability, ensuring you maintain optimal comfort and control...
                                        £42.99
                                        £42.99
                                      • System EX MTB seatpost clamp quick release with 15mm height, bike components spare part for secure seatpost attachment.System EX MTB seatpost clamp quick release with 15mm height adjustment, bike component spare part.

                                        System Ex MTB Seatpost Clamp Quick Release Spares & Accessories 15mm Height - Black

                                        Enhance your MTB setup with the System Ex Seatpost Clamp featuring a quick-release lever for fast adjustments. Crafted from durable extruded alloy, it offers reliable strength while remaining lightweight. The matt black finish adds a sleek, stealthy look, complementing any bike style. At 15mm...
                                        £5.06
                                        £6.99
                                        £5.06
                                        Save £1.93
                                        • Black
                                      • System EX MTB seatpost clamp with Allen bolt fixing, spare component for bike maintenance and replacement.System EX MTB seatpost clamp with Allen bolt fixing, spare component for bike seatpost adjustment and secure fitting.

                                        System Ex MTB Seatpost Clamp Spare & Accessory with Allen Bolt Fixing - Black

                                        Upgrade your MTB with the System Ex Seatpost Clamp, designed for secure and lightweight performance. Crafted from extruded alloy, it ensures durability without extra weight. Available in anodised silver or matt black, it adds a sleek finish to your bike. With a 15mm height...
                                        from £3.61
                                        £4.99
                                        from £3.61
                                        Save £1.38
                                        • Black
                                        • Silver
                                      • Aenomaly SwitchGrade Fitting Kit E for Fox Transfer 2025 dropper post installation, component with connectors and fittings.

                                          Aenomaly SwitchGrade Fitting Kit E for Fox Transfer 2025 Dropper Post Installation - Black

                                          The Aenomaly SwitchGrade Fitting Kit E is a precision-engineered solution designed to enhance your bike’s dropper post installation experience. Crafted by Aenomaly, a brand renowned for its innovative components, this kit provides everything necessary to ensure a secure, adjustable, and smooth setup. With its...
                                          £25.00
                                          £25.00
                                          • Black
                                        • Placeholder image

                                            Crankbrothers Highline XCG Quill Assembly Seatpost Component for Bike Stability

                                            The Crankbrothers Highline XCG Quill Assembly is a meticulously designed component that elevates the functionality and durability of your bicycle’s seatpost system. Engineered by Crankbrothers, a leader in innovative cycling solutions, this finishing kit ensures a secure fit and smooth operation for the Highline...
                                            £36.99
                                            £36.99
                                          • Crankbrothers Highline Remote Rubber Pads with 3M adhesive for added grip and comfort on mountain bike components.Crankbrothers Highline Remote rubber pads with 3M adhesive for enhanced grip and comfort on mountain bike components.

                                              Crankbrothers Highline Remote Rubber Pads with 3M Adhesive for Grip & Comfort - Grey

                                              Enhance your Highline Premium Remote - Gen 2 with Crankbrothers Highline Remote Rubber Pads. These swappable pads keep your cockpit fresh and comfortable, ensuring a reliable grip every ride. Easy to install with 3M adhesive backing, they offer lasting durability and performance. What It’s...
                                              £7.99
                                              £7.99
                                              • Grey
                                              • Blue
                                              • Red
                                              • Orange
                                            • Placeholder image

                                              Crankbrothers Highline 3 Replacement Keyway for Dropper Post Upgrade - Black

                                              Upgrade your Highline 3 dropper post with this reliable replacement keyway. Designed by Crankbrothers, it ensures smooth and secure operation every ride. What It’s Good For Restores proper function to your Highline 3 dropper post Easy to install with durable, high-quality materials Maintains original...
                                              £24.99
                                              £24.99
                                              • Black
                                            • Placeholder image

                                                Crankbrothers Highline 11 Quill Assembly Seatpost Component for Smooth Operation

                                                The Crankbrothers Highline 11 Quill Assembly is a meticulously crafted component designed to optimize your bike’s seatpost functionality. Engineered by Crankbrothers, a leader in innovative cycling solutions, this assembly acts as a crucial finishing kit that guarantees smooth and reliable operation. Perfect for cyclists...
                                                £159.99
                                                £159.99
                                              • Placeholder image

                                                  Crankbrothers Highline XCG 27.2 Seatpost Igus Keys Replacement Black - Black

                                                  Upgrade your Highline XCG 27.2 seatpost with durable Igus Keys. Crafted by Crankbrothers, these keys ensure smooth adjustments and reliable performance. What It’s Good For Easy replacement for worn or lost Igus Keys Compatible with Highline XCG 27.2 seatposts Enhances seatpost adjustment precision Durable...
                                                  £2.50
                                                  £2.50
                                                  • Black
                                                • Placeholder image

                                                    Crankbrothers Highline XCG Cartridge Screw Black – Dropper Seatpost Replacement Part - Black

                                                    Upgrade your seatpost with the Crankbrothers Highline XCG cartridge screw in sleek black. This essential component ensures a secure fit between the dropper cartridge and seatpost clamp, enhancing stability and performance. What It’s Good For Secures dropper cartridge firmly to the seatpost clamp Durable...
                                                    £0.50
                                                    £0.50
                                                    • Black
                                                  Recently Viewed Products

                                                  Maintain and upgrade your seatpost setup with our range of seatpost spares and accessories at Swinnerton Cycles. From saddle clamps and collar bolts to dropper post service kits and remote levers, we stock the components needed to keep your seatpost performing at its best. Browse our full Seatposts collection and explore Dropper Seatposts and Bike Saddles.

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