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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      Cane Creek Thudbuster G4 ST Elastomer Capsule 70A Shock Absorber Replacement

      The Cane Creek Thudbuster G4 ST Elastomer Capsule 70A is engineered to elevate your cycling experience by delivering superior shock absorption and comfort. Crafted with precision by Cane Creek, a leader in cycling innovation, this elastomer capsule is designed to fit seamlessly within the...
      £11.99
      £11.99
    • Placeholder image

        Cane Creek Thudbuster G3 Bolt Kit for Suspension Seatpost Replacement & Maintenance

        The Cane Creek Thudbuster G3 Bolt Kit is an essential component designed to maximize the performance and longevity of your Thudbuster G3 suspension seatpost. Crafted by Cane Creek, a reputable leader in cycling technology, this bolt kit guarantees a secure and stable attachment, helping...
        £9.99
        £9.99
      • Fox Transfer seatpost full rebuild seal kit for 2025, compatible with 30.9-34.9mm seatposts, includes seals and components.Fox Transfer seatpost full rebuild seal kit for 2025 models, compatible with 30.9-34.9mm seatposts, includes seals and components.

        Fox Transfer Seatpost Full Rebuild Seal Kit 2025 Compatible 30.9-34.9mm

        Upgrade your Fox Transfer Seatpost with the Full Rebuild Seal Kit 2025, designed to maintain optimal performance and extend the life of your seatpost. This kit is engineered for precision, ensuring a smooth and reliable operation every time you adjust your seat height. Compatible...
        £53.82
        £56.95
        £53.82
        Save £3.13
      • KS Suspension Southpaw-Alloy remote dropper lever with 22.2mm clamp, universal underbar design for bike components.

          KS Suspension Southpaw-Alloy Universal Underbar Remote Dropper Lever 22.2mm Clamp - Black

          The KS Suspension Southpaw-Alloy remote lever redefines control for 1x drivetrain setups with its sleek and ergonomic design. Crafted to deliver a secure and responsive feel, this universal alloy underbar lever fits a 22.2mm clamp, seamlessly integrating into modern cockpit layouts without adding unnecessary...
          £49.99
          £49.99
          • Black
        • Cane Creek Thudbuster G4 elastomers replacement for bicycle suspension seatpost, showing different elastomer options.Cane Creek Thudbuster G4 elastomers replacement for suspension seat post, showing the durable rubber components.

          Cane Creek Thudbuster G4 Elastomers Replacement - Suspension Spares & Accessories

          Upgrade your Cane Creek Thudbuster G4 with these premium replacement elastomers designed to restore smooth suspension performance. Available in five firmness levels, they fine-tune ride comfort and control with precision. Crafted for durability and easy installation, these elastomers ensure your seatpost maintains optimal shock...
          from £5.25
          £5.99
          from £5.25
          Save £0.74
        • Cane Creek eeSilk elastomers replacement for seatpost spring rate tuning, showing flexible elastomer components for bike suspension adjustment.Cane Creek eeSilk elastomer replacement for seatpost spring rate tuning, showing multiple elastomers in packaging.

          Cane Creek eeSilk Elastomers Replacement for Seatpost Spring Rate Tuning Accessories

          Enhance your Cane Creek eeSilk seatpost’s performance with these additional elastomers. They allow precise tuning of the spring rate, ensuring a smoother, personalized ride every time. Designed for easy installation, these elastomers work seamlessly with the eeSilk system to improve comfort and control on...
          from £10.51
          £11.99
          from £10.51
          Save £1.48
        • Kinesis UK XF Manic cable tensioning and locking barrel with grub screw for bike components, shown in close-up.Kinesis UK XF Manic cable tensioning and locking barrel with grub screw for bike components, shown in close-up detail.

            XF Manic Cable Tensioning and Locking Barrel with Grub Screw for Bikes

            The XF - Manic Cable and Locking Barrel from Kinesis UK ensures secure and reliable cable tensioning for your bike. Crafted for durability, it includes a grub screw for firm locking, making maintenance straightforward. Designed as a finishing kit component, it fits seamlessly with...
            £6.00
            £6.00
          • Pro Performance Seatpost Clamp 34.9Mm Blue Spares & AccessoriesPro Performance Seatpost Clamp 34.9Mm Blue Spares & Accessories | Swinnerton Cycles

            Pro Performance 34.9mm Seatpost Clamp Blue – Durable Bike Spare Accessory - Black

            The Pro Performance Seatpost Clamp 34.9Mm Blue offers a sleek, durable solution for secure seatpost attachment. Crafted from lightweight 7075 alloy, it ensures strength without added weight. Equipped with a stainless steel nut and bolt, this clamp promises long-lasting performance and resistance to wear....
            from £14.57
            £17.99
            from £14.57
            Save £3.42
            • Blue
            • Black
          • Fox Kashima seatpost upper post replacement component for smooth bike seat adjustment, compatible with Fox bike models.Fox Kashima seatpost upper post for Fox bike components, featuring smooth adjustment and high-quality construction.

            FOX Seatpost Upper Post Kashima 2018 Replacement Part for Smooth Adjustment

            The FOX Seatpost Upper Post Kashima 2018 enhances your bike's performance with durable, smooth operation. Designed for precise fit and long-lasting use. Its Kashima coating reduces friction, ensuring effortless seatpost movement and improved ride comfort. Ideal for upgrading or replacing your current seatpost part....
            £103.91
            £109.95
            £103.91
            Save £6.04
          • Fox Transfer Seatpost Index Pin 31Mm X 0.0767 Diameter Spares & AccessoriesFox Transfer Seatpost Index Pin 31Mm X 0.0767 Diameter Spares & Accessories | Swinnerton Cycles

            Fox Transfer Seatpost Index Pin 31mm x 0.0767 Diameter Spare Part & Accessory

            The Fox Transfer Seatpost Index Pin offers precise fit and reliable performance for your dropper seatpost. Crafted for durability, it ensures smooth operation and easy maintenance. Designed to match the 31mm length and 0.0767 diameter, this spare part is essential for keeping your seatpost...
            £1.18
            £1.25
            £1.18
            Save £0.07
          • Bontrager 2021 Slash 29 39.7Mm Seatpost Collar Spares & AccessoriesTrek 2021 Slash 29 39.7mm Seatpost Collar Black 39.7 mm | Swinnerton Cycles

              Trek 2021 Slash 29 Seatpost Collar 39.7mm Black Clamp Bolt Included

              Upgrade your bike with the Trek 2021 Slash 29 39.7mm Seatpost Collar in sleek black. This durable collar ensures a secure fit for your seatpost, enhancing stability and ride comfort. Designed for easy installation, it provides reliable clamping without compromising style. Perfect for maintaining...
              £9.44
              £9.99
              £9.44
              Save £0.55
            • Bontrager Line Elite dropper seatpost bushing kit in black, Trek components for dropper seatpost replacement, one size.Trek Bontrager Line Elite dropper seatpost bushing kit in black, replacement components for dropper seatpost maintenance.

                Bontrager Line Elite Dropper Seatpost Bushing Kit Black One Size Replacement

                Upgrade your Bontrager Line Elite Dropper with this essential bushing kit. Designed for smooth performance and durability, it ensures your seatpost operates flawlessly. Crafted by Trek, this finishing kit offers precise fit and reliable support for your dropper seatpost, keeping your ride comfortable and...
                £2.82
                £2.99
                £2.82
                Save £0.17
              • Trek Madone Slr Isospeed Dampers Spares & AccessoriesTrek Madone Slr Isospeed Dampers Spares & Accessories

                Trek Madone SLR IsoSpeed Damper Spares & Accessories for Frame Maintenance - Black

                Upgrade your Trek Madone SLR with genuine IsoSpeed damper spares. This kit ensures optimal performance and smooth riding experience by maintaining the frame's vibration absorption. Designed specifically for Trek Madone SLR, these components guarantee seamless compatibility and durability. Perfect for riders seeking reliable maintenance...
                from £18.89
                £19.99
                from £18.89
                Save £1.10
                • Black
              • Trek Madone 9-Series Aero Seatpost Head Parts Kit Spares & AccessoriesTrek Madone 9-Series Aero Seatpost Head Parts Kit Black One size | Swinnerton Cycles

                  Trek Madone 9-Series Aero Seatpost Head Parts Kit Black – Replacement Bike Component

                  Upgrade your Trek Madone 9-Series with this sleek Aero Seatpost Head Parts Kit. Designed for a precise fit, it enhances your bike's aerodynamics and overall performance. Crafted from durable materials, it ensures long-lasting reliability. What It’s Good For Improving aerodynamics for faster rides Ensuring...
                  £18.89
                  £19.99
                  £18.89
                  Save £1.10
                • Thomson Silver Spacer Kit with 20mm, 10mm, and 5mm spacers for bike stem fit adjustment, featuring silver components.Thomson Silver Spacer Kit with 20mm, 10mm, and 5mm spacers for bike stem adjustment, designed for precise bike fit.

                    Thomson Silver Spacer Kit 20mm, 10mm & 5mm for Elite Stems - Bike Fit Adjustment

                    Upgrade your bike’s fit and finish with the Thomson Spacer Kit in sleek silver. This kit includes precision-machined spacers in 20mm, 10mm, and 5mm sizes, designed to perfectly complement your setup. Crafted with attention to detail, these spacers ensure a secure and customizable stem...
                    £25.00
                    £25.00
                  • KS Suspension dropper post paste spares and accessories for smooth seatpost performance, showing various components and tools.

                      KS Suspension Dropper Post Paste Spares & Accessories for Smooth Seatpost Performance

                      KS Suspension Dropper Spares Post Paste ensures smooth, reliable seatpost performance. This specially formulated paste reduces friction for effortless adjustment and long-lasting durability. Designed for easy application, it maintains your dropper post's efficiency and extends its lifespan with every use. What It’s Good For...
                      £9.99
                      £9.99
                    • Sdg Tellis Adjustable Dropper Remote Lever W/ 22.2Mm Bar Clamp & Hardware Spares & AccessoriesSdg Tellis Adjustable Dropper Remote Lever W/ 22.2Mm Bar Clamp & Hardware Spares & Accessories | Swinnerton Cycles

                        SDG Tellis Adjustable Dropper Remote Lever with 22.2mm Bar Clamp & Hardware Spares

                        Experience precise control with the SDG Tellis Adjustable Dropper Remote Lever, designed for 22.2mm handlebars. Crafted from forged alloy, this lever offers a lightweight yet durable solution for smooth seatpost adjustments on the fly. Its featherlight thumb actuation ensures effortless operation, while the cable...
                        £61.41
                        £69.99
                        £61.41
                        Save £8.58
                      • SDG Tellis seatpost seal collar and keyway assembly, replacement components for bike seatpost stability and adjustment.SDG Tellis seatpost seal collar, bushing, and keyway assembly replacement component for bike seatpost maintenance.

                          SDG Tellis Seatpost Seal Collar Bushing & Keyway Assembly Replacement Spares

                          Enhance your SDG Tellis seatpost with this Seal Collar Bushing & Keyway Assembly. Designed for durability and precise fit, it ensures smooth seatpost operation and long-lasting performance. This assembly is an essential component for maintaining the integrity and function of your seatpost, providing reliable...
                          £14.87
                          £16.95
                          £14.87
                          Save £2.08
                        • Sdg Tellis Seatpost Clamp Hardware Assembly Spares & AccessoriesSdg Tellis Seatpost Clamp Hardware Assembly Spares & Accessories | Swinnerton Cycles

                            SDG Tellis Seatpost Clamp Hardware Assembly – Bike Spares & Accessories

                            Enhance your bike’s performance with the SDG Tellis Seatpost Clamp Hardware Assembly. Designed for durability and precision, this component ensures a secure fit for your seatpost, improving ride stability. Crafted by SDG, it offers reliable finishing touches that keep your bike looking and functioning...
                            £10.48
                            £11.95
                            £10.48
                            Save £1.47
                          • Hope Seat Clamp Quick Release St Spares & Accessorieshope seat clamp seat clamp quick release st p134248

                            Hope Seat Clamp Quick Release - Durable Bike Seatpost Accessory & Spares - Black

                            Discover the Hope Seat Clamp Quick Release, designed for durability and ease of use. Crafted from high-quality materials, it ensures a secure fit for your seatpost while allowing quick adjustments on the go. Perfect for cyclists seeking reliable performance and a sleek finishing kit...
                            £29.00
                            £29.00
                            • Black
                            • Smoke
                          • Ritchey WCS alloy 1-bolt rail clamp kit for bicycle saddle rails, compatible with 7x7mm, 8x8.5mm, and 7x9.6mm rails.Ritchey WCS alloy 1-bolt rail clamp kit for saddle rails, compatible with 7x7mm, 8x8.5mm, and 7x9.6mm sizes

                            Ritchey WCS Alloy 1-Bolt Rail Clamp Kit for Saddle Rails 7x7mm, 8x8.5mm, 7x9.6mm Spares & Accessories - Black

                            Upgrade your Ritchey WCS Alloy 1-Bolt seatpost with this complete clamp kit designed for various saddle rail sizes. Crafted from durable 7050 alloy with a stainless steel bolt, it ensures a secure and reliable fit for your saddle. Compatible with 7x7mm, 8x8.5mm, or 7x9.6mm...
                            £20.41
                            £23.99
                            £20.41
                            Save £3.58
                            • Black
                          • Ritchey WCS Carbon 1-Bolt Rail Clamp for seatposts, lightweight bicycle component with black finish and metal bolt.Ritchey WCS Carbon 1-Bolt Rail Clamp for seatposts, close-up view of the black clamp with branding details.

                            Ritchey WCS Carbon 1-Bolt Rail Clamps Spares & Accessories for Seatposts - Black

                            The Ritchey WCS Carbon 1-Bolt Rail Clamps are essential spares designed to perfectly fit WCS Carbon seatposts. Crafted from durable 7050 alloy, they adapt your seatpost to various saddle rail dimensions with precision and reliability. Available in sizes 7x7mm, 8x8.5mm, or 7x9.6mm, these clamps...
                            £14.50
                            £16.99
                            £14.50
                            Save £2.49
                            • Black
                          • Ritchey WCS Alloy 1-Bolt Rail Clamp for seatpost saddle rail attachment, lightweight bike component spare part.Ritchey WCS Alloy 1-Bolt Rail Clamp for seatpost saddle rail adaptation, lightweight alloy component for bike saddle setup.

                            Ritchey WCS Alloy 1-Bolt Rail Clamps for Seatpost Saddle Rail Adaptation Spares - Black

                            Ritchey WCS Alloy 1-Bolt Rail Clamps offer a precise solution to adapt your WCS Alloy 1-bolt seatposts to different saddle rail sizes. Crafted from durable 7050 alloy, these clamps ensure a secure fit and reliable performance. Available in sizes 7x7mm, 8x8.5mm, and 7x9.6mm, they...
                            £14.50
                            £16.99
                            £14.50
                            Save £2.49
                            • Black
                          • Kinesis Uk Titanium Seat Clamp V2 34.9 Spares & AccessoriesKinesis - Titanium Seat Clamp v2 - 34.9 | Swinnerton Cycles

                              Kinesis Titanium Seat Clamp v2 34.9mm – Durable Lightweight Bike Seatpost Clamp

                              The Kinesis Titanium Seat Clamp v2 combines strength and lightweight design for a sleek finish on your bike frame. Crafted from durable titanium, it ensures reliable seatpost security without adding bulk. Its subtle appearance complements any frame, offering both style and performance in one...
                              £65.00
                              £65.00
                            • BBB Lightstrangler Seat Clamp BSP-85 for bike seatposts, shown as a black bike component with tightening bolt and clamp body.BBB Lightstrangler Seat Clamp BSP-85, a bike seatpost clamp component with a sturdy metal design and quick-release mechanism.

                              BBB Lightstrangler Seat Clamp BSP-85 | Bike Seatpost Clamp Spares & Accessories - Black

                              The BBB Lightstrangler Seat Clamp [Bsp-85] offers a secure, lightweight solution for your bike's seatpost. Crafted from durable 6061 T6 aluminium, it ensures even clamping forces ideal for both carbon fibre and aluminium seatposts. Available in multiple diameters for a perfect fit. What It’s...
                              from £4.91
                              £12.99
                              from £4.91
                              Save £8.08
                              • Black
                            • Bbb Thestrangler Seat Clamp [Bsp-80] Spares & AccessoriesBbb Thestrangler Seat Clamp [Bsp-80] Spares & Accessories | Swinnerton Cycles

                              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...
                              £4.54
                              £5.99
                              £4.54
                              Save £1.45
                              • 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
                              • 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
                                • Giant Intergrated Rack Mount D-Fuse Seat Collar Spares & AccessoriesGiant Intergrated Rack Mount D-Fuse Seat Collar Spares & Accessories | Swinnerton Cycles

                                    Giant Integrated Rack Mount D-Fuse Seat Collar Spare & Accessory for Bikes

                                    Enhance your D-Fuse seatpost with the Giant Integrated Rack Mount D-Fuse Seat Collar. Crafted from durable aluminium, it offers a secure and sleek mounting solution for your rear rack. This accessory seamlessly expands your bike's luggage capacity, perfect for long rides. Designed for easy...
                                    £10.00
                                    £10.00
                                  • Cane Creek Thudbuster G4 seatclamp kit with suspension seatpost components for bicycle comfort and performance.

                                      Cane Creek Thudbuster G4 Seatclamp Kit Complete Suspension Seatpost Parts

                                      Enhance comfort and performance with the Cane Creek Thudbuster G4 Complete Seatclamp Kit. Designed to perfectly fit Thudbuster G4 seatposts, this kit ensures a secure and reliable connection for your saddle. Crafted for durability and ease of installation, it includes all necessary components to...
                                      £24.99
                                      £24.99
                                    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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