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 alloy seatpost shims for 10cm seatposts, fitting 25.4mm and 27.2mm diameter bike seatposts, component adapters.Cane Creek alloy seatpost shims for 25.4mm and 27.2mm seatposts, 10cm length, for bike component customization.

    Cane Creek Seatpost Shims 10cm Alloy Adapters for 25.4 & 27.2mm Seatposts

    Enhance your bike fit with Cane Creek Seatpost Shims, crafted from custom machined alloy for durability. These 10cm sleeves allow seamless adaptation from 25.4 or 27.2 seatposts to larger seat tube diameters, ensuring a perfect fit and reliable performance. Designed for easy installation, these...
    from £10.00
    £12.99
    from £10.00
    Save £2.99
  • Trek seatpost road clamp ears, 7x9mm oval replacement components for bike spares and accessories.Trek road bike seatpost clamp ears, 7x9mm oval replacement components, bike spares and accessories.

    Trek Seatpost Road Clamp Ears 7x9mm Oval Replacement Part Spares & Accessories - Black

    The Trek Seatpost Part Road Clamp Ears 7x9mm Oval offers reliable support for your seatpost. Designed for durability, it ensures a secure fit to keep your ride stable. Made as a precise replacement part, it’s perfect for maintaining or upgrading your Trek seatpost setup....
    £18.89
    £19.99
    £18.89
    Save £1.10
    • Black
  • Bontrager rotary head seatpost saddle clamp ears replacement parts for bike components, designed for secure saddle attachment.Bontrager Rotary Head Seatpost Saddle Clamp Ears replacement components for bike saddle and seatpost assembly.

    Bontrager Rotary Head Seatpost Saddle Clamp Ears Replacement Spares & Accessories - Black

    Upgrade your bike with the Bontrager Rotary Head Seatpost Saddle Clamp Ears, designed for seamless compatibility with Bontrager and Trek rotary head seatpost and seat mast systems. These replacement saddle ears restore stability and ensure a secure fit for your Bontrager saddles. Crafted for...
    from £13.00
    £13.99
    from £13.00
    Save £0.99
    • Black
    • Silver
  • Thomson seatpost collar replacement bolt, washer, and barrel nut components for bike seatpost adjustment and security.Thomson seatpost collar replacement bolt, washer, and barrel nut set for bike components, shown on a plain background

    Thomson Seatpost Collar Replacement Bolt, Washer & Barrel Nut Accessories - Silver

    The Thomson Seatpost Collar stands out with its innovative design and durable construction. Featuring the trusted Thomson Seatpost bolt, washer, and barrel nut combination, it ensures a secure and reliable hold that has been proven over years of use. The unique design allows float...
    £42.88
    £45.00
    £42.88
    Save £2.12
    • Silver
    • Black
  • Cane Creek Thudbuster LT elastomers replacement for suspension seatpost, showing close-up of elastomer components.Cane Creek Thudbuster LT elastomers replacement for suspension seatpost, showing close-up of the elastomer components.

      Cane Creek Thudbuster LT Elastomers Replacement for Suspension Seatpost Spares

      Upgrade your Cane Creek Thudbuster LT suspension seatpost with these high-quality elastomers, designed to deliver customizable comfort and performance. Now available in a sleek black finish, each elastomer is rated by firmness to match your riding style, from extra soft to extra firm. Their...
      £6.99
      £6.99
    • Hope seat clamp bolt for bikes, durable component designed to securely hold seatposts in place.Hope Seat Clamp Bolt for bikes, durable component designed to securely fasten seatposts with a black finish.

      Hope Seat Clamp Bolt - Durable Bike Spare & Accessory for Secure Seatposts - Black

      Upgrade your bike with the Hope Seat Clamp Bolt, a durable and reliable component designed for lasting performance. Crafted with precision, it ensures a secure fit for your seatpost. Ideal for riders seeking quality and longevity, this clamp bolt blends seamlessly with your setup,...
      £23.00
      £23.00
      • Black
      • Smoke
    • Bontrager Line Dropper Saddle Clamp Kit Spares & AccessoriesBontrager Line Dropper Saddle Clamp Kit Black 36.4 mm | Swinnerton Cycles

        Bontrager Line Dropper Saddle Clamp Kit 36.4 mm Black for Seatpost

        Upgrade your bike with the Bontrager Line Dropper Saddle Clamp Kit. Designed for a secure fit, this 36.4 mm clamp ensures smooth saddle adjustments. Crafted for durability, it complements your seatpost perfectly while enhancing riding comfort. What It’s Good For Reliable saddle clamping for...
        £12.28
        £12.99
        £12.28
        Save £0.71
      • Thomson Spare Collar Replacement Boltwasher Nut 1 Each Spares & AccessoriesThomson - Spare - Collar Replacement BoltWasher Nut 1 each | Swinnerton Cycles

          Thomson Spare Collar Replacement Bolt Washer Nut Set for Seatpost Stability

          Upgrade your seatpost with the Thomson Spare Collar Replacement Bolt, Washer, and Nut. Designed for durability, this combination ensures a secure fit and reliable performance. Its proven design maintains consistent clamping force for a stable ride every time. What It’s Good For Ensuring strong...
          £5.00
          £5.00
        • Shimano Deore SL-MT500-L left-hand adjustable seatpost lever with clamp band for bike components, showing ergonomic design and branding.Shimano Deore SL-MT500-L left-hand adjustable seatpost lever with clamp band, bicycle component for gear shifting.

            Shimano Deore SL-MT500-L Left-Hand Adjustable Seatpost Lever with Clamp Band

            The Shimano Deore SL-MT500-L adjustable seatpost lever offers smooth and reliable control for your dropper seatpost. Designed for left-hand use, it features a lightweight build and precise 9 mm cable pull compatibility with most dropper posts. Its easy access clamp band allows quick and...
            £21.93
            £24.99
            £21.93
            Save £3.06
          • Ergon Flip Head Kit for Oval Carbon Rails 7x9mm compatible with CF Allroad Pro seatpost, black component for bike saddle setup.Ergon Flip Head Kit for Oval Carbon Rails 7x9mm, compatible with CF Allroad Pro seatpost, shown in black on a bicycle component.

              Ergon Flip Head Kit for Oval Carbon Rails 7x9mm – CF Allroad Pro Seatpost Compatible Black

              Experience enhanced comfort and versatility with the Ergon Flip Head Kit for Carbon Rails Black. Designed to bring the superior suspension benefits of the CF Allroad Pro Carbon leaf spring seatpost to more cyclists, this finishing kit is perfect for those who prefer saddles...
              £24.28
              £29.99
              £24.28
              Save £5.71
            • Bontrager Carbon Friendly Quick Release Seatpost Clamp Spares & AccessoriesBontrager Carbon-Friendly Quick-Release Seatpost Clamp Black 36.4 mm | Swinnerton Cycles

                Bontrager Carbon-Friendly Quick-Release Seatpost Clamp – 36.4mm, Black

                The Bontrager Carbon-Friendly Quick-Release Seatpost Clamp is a 36.4mm seat tube clamp designed for Trek and other bikes with a 36.4mm seat tube internal diameter — the standard seat tube size used on most Trek road and gravel frames. The carbon-friendly designation means the...
                £11.32
                £11.99
                £11.32
                Save £0.67
              • Fox 2018 Transfer Post internal die-cast bottom cap assembly component for mountain bike suspension forks.Fox 2018 Transfer Post internal die-cast bottom cap assembly, spare component for mountain bike suspension fork.

                  Fox 2018 Transfer Post Internal Die-Cast Bottom Cap Assembly Spare Part

                  Upgrade your Fox 2018 Transfer Post with this durable internal die-cast bottom cap assembly. Designed specifically for seatposts with internal cable routing, it ensures a secure and precise fit. Crafted with high-quality materials, this finishing kit extends the life of your seatpost and maintains...
                  £53.82
                  £56.95
                  £53.82
                  Save £3.13
                • Cane Creek Eesilk+ elastomer spares and accessories for suspension maintenance, showing various replacement components.

                  Cane Creek Eesilk+ Elastomer Spares & Accessories for Suspension Maintenance

                  Cane Creek Eesilk+ Elastomer Spares & Accessories provide an essential upgrade and maintenance solution for your Cane Creek suspension system. Crafted with precision and high-quality materials, these spares ensure your suspension components maintain their smooth, responsive performance ride after ride. Whether you're replacing worn...
                  £10.51
                  £11.99
                  £10.51
                  Save £1.48
                • SDG Tellis seatpost cartridge assembly replacement component showing detailed internal and external parts.SDG Tellis seatpost cartridge assembly replacement component for bike seatposts, featuring durable construction and precise fit.

                  SDG Tellis Seatpost Cartridge Assembly Replacement Spares & Accessories

                  The SDG Tellis Seatpost Cartridge Assembly ensures smooth and reliable seatpost performance. Designed for easy installation and maintenance, it fits perfectly with your existing SDG Tellis seatpost. Enhance your ride comfort and prolong the lifespan of your seatpost with this essential spare part. Available...
                  from £35.06
                  £39.95
                  from £35.06
                  Save £4.89
                • Shimano Sl-Mt800-L Adjustable Seatpost Lever I-Spec Ev Mount Left Hand Black Spares & AccessoriesShimano XTR SL-MT800-L adjustable seatpost lever, I-Spec EV mount, left hand, black | Swinnerton Cycles

                    Shimano XTR SL-MT800-L Left Hand Adjustable Seatpost Lever with I-Spec EV Mount Black

                    The Shimano XTR SL-MT800-L adjustable seatpost lever offers precise control and durability for serious riders. Designed to seamlessly integrate with the Shimano XTR groupset, it delivers smooth, low-friction operation thanks to reliable bearings. Its lightweight design ensures effortless handling, while 7 mm of cable...
                    £47.22
                    £49.99
                    £47.22
                    Save £2.77
                  • Bontrager Line Elite dropper post keyway kit in black, designed for 34.9mm seat posts, bicycle components accessory.Bontrager Line Elite Dropper Post Keyway Kit in black, designed for 34.9mm dropper seatposts, bicycle component replacement part

                      Bontrager Line Elite Dropper Post Keyway Kit 34.9mm Black One Size

                      The Bontrager Line Elite Dropper 34.9mm Post Keyway Kit offers precise adjustment and durability. Perfect for upgrading your seatpost with easy installation and a sleek black finish. Designed for seamless compatibility, this kit enhances your bike’s performance and rider comfort on any trail. What...
                      £4.71
                      £4.99
                      £4.71
                      Save £0.28
                    • Bontrager Basic Seatpost Clamp Spares & AccessoriesBontrager Basic Seatpost Clamp Spares & Accessories

                      Bontrager Basic Seatpost Clamp – Durable Bike Seatpost Clamp Spares & Accessories - Black

                      Bontrager Basic Seatpost Clamp offers reliable clamping for your seatpost with precise torque guidance. Available in multiple diameters to fit your bike perfectly. Durable and easy to install, it ensures your seatpost stays securely in place for a smooth ride every time. What It’s...
                      £9.44
                      £9.99
                      £9.44
                      Save £0.55
                      • Black
                    • Bontrager Line Dropper Key Way Kit Spares & AccessoriesBontrager Line Dropper Key Way Kit Black One size | Swinnerton Cycles

                        Bontrager Line Dropper Key Way Kit Black One Size Replacement for Dropper Posts

                        Keep your Bontrager Line Dropper post performing at its best with this Original Equipment replacement Key Way Kit. Designed for easy servicing and maintenance, it ensures smooth operation and longevity. Crafted to fit perfectly, this kit helps you maintain the reliability of your dropper...
                        £9.44
                        £9.99
                        £9.44
                        Save £0.55
                      • DMR Bikes Sect seat clamp, durable CNC machined bike component with metal bolt and clamp ring on a white background.DMR Bikes Sect seat clamp, durable CNC machined bike component for secure saddle attachment, shown in close-up.

                        DMR Bikes Sect Seat Clamp – Durable CNC Machined Bike Accessory Spares - Black

                        The DMR Sect Seat Clamp combines lightweight design with exceptional durability, crafted specifically for demanding riders. Engineered with precision CNC machining and laser-etched graphics, it offers both style and strength. Its strategically machined windows reduce weight without compromising performance, making it an ideal choice...
                        £15.80
                        £18.00
                        £15.80
                        Save £2.20
                        • Black
                      • Bontrager Xxx Saddle Clamp Barrel Assembly Spares & AccessoriesBontrager RSL 27.2 Seatpost Saddle Clamp Barrel Assembly Black One size | Swinnerton Cycles

                          Bontrager RSL 27.2 Seatpost Saddle Clamp Barrel Assembly Black Bike Part

                          Upgrade your bike with the Bontrager RSL 27.2 Seatpost Saddle Clamp Barrel Assembly. Designed for durability and precise adjustment, it ensures a secure fit for your saddle. Crafted from high-quality materials, this assembly provides reliable performance and easy installation for your Bontrager seatpost. What...
                          £37.79
                          £39.99
                          £37.79
                          Save £2.20
                        • SDG Tellis I-Spec EV mount and hardware for adjustable dropper lever remote, bike component spare parts.SDG Tellis I-Spec EV mount and hardware for adjustable dropper lever remote, bike component spares, black metal parts.

                            SDG Tellis I-Spec EV Mount & Hardware for Adjustable Dropper Lever Remote Spares

                            Upgrade your dropper lever with the SDG Tellis I-Spec EV Mount & Hardware, designed for precision and durability. This kit ensures a secure fit and smooth operation for your adjustable remote. Crafted by SDG, it integrates seamlessly with compatible seatposts, enhancing control and comfort...
                            £19.26
                            £21.95
                            £19.26
                            Save £2.69
                          • Giant top cap dust seal and slider set for MY18 contact switch seatpost, bike components accessories.Giant Top Cap Dust Seal and Slider Set for MY18 Contact Switch seatpost, component accessories for smooth operation.

                              Giant Top Cap Dust Seal & Slider Set for MY18 Contact Switch Seatpost Accessories

                              The Giant Top Cap Dust Seal and Slider Set is an essential upgrade for the MY18 Contact Switch Seatpost, crafted to ensure your bike performs at its best. Designed by Giant, a leader in cycling innovation, this set offers precise protection against dust and...
                              £10.00
                              £10.00
                            • Giant Dropper Post Replacement Cartridge Spares & Accessories | Swinnerton Cycles

                                Giant Dropper Post Replacement Cartridge Spares & Accessories for 2022 Models

                                Maintaining the performance of your Giant dropper seatpost has never been easier with the Giant Dropper Post Replacement Cartridge Spares & Accessories. Designed specifically for 2022 models, this finishing kit is engineered to fit seamlessly with your existing seatpost, ensuring smooth and reliable operation....
                                £35.00
                                £35.00
                              • Cane Creek Alloy Seatpost Shims for adapting 25.4mm to 33.9mm seat tubes, bicycle components accessory for bike fitting.Cane Creek Alloy Seatpost Shims for adapting 25.4mm to 33.9mm seat tubes, bike components and accessories for proper fit.

                                Cane Creek Alloy Seatpost Shims for Adapting 25.4-33.9mm Seat Tubes - Spares & Accessories

                                Upgrade your bike setup with Cane Creek Seatpost Shims, expertly crafted from alloy for precise fitment. These shims adapt seatposts ranging from 25.4 to 33.9mm to fit larger seat tubes seamlessly. Durable and custom machined, they ensure a secure and stable connection, enhancing your...
                                £10.53
                                £12.99
                                £10.53
                                Save £2.46
                              • Bontrager Line Dropper Post Bushing Kit in white, 31.6mm, for dropper post component replacement, includes bushings and hardware.Bontrager Line Dropper Post Bushing Kit in white for 31.6mm dropper post, replacement component for bike suspension system

                                  Bontrager Line Dropper Post Bushing Kit 31.6mm White One Size Replacement

                                  Upgrade your Bontrager Line Dropper post with this 31.6mm bushing kit for smooth operation and durability. Precise fit ensures reliable seatpost movement every ride. What It’s Good For Extends the life of your dropper post Ensures smooth seatpost movement Easy installation and replacement Maintains...
                                  £7.55
                                  £7.99
                                  £7.55
                                  Save £0.44
                                • Bontrager Line Dropper Under-Bar Seatpost Lever Spares & AccessoriesBontrager Line Dropper Under-Bar Seatpost Lever Black One size | Swinnerton Cycles

                                    Bontrager Line Dropper Under-Bar Seatpost Lever Black for 1x Drivetrains

                                    Enhance your ride control with the Bontrager Line Dropper Under-Bar Seatpost Lever. This cable-actuated remote lever offers seamless operation for the Bontrager Line Dropper seatpost and fits most other cable-actuated dropper seatposts. Its ergonomic design replaces the left shifter on 1x drivetrains for easy...
                                    £18.89
                                    £19.99
                                    £18.89
                                    Save £1.10
                                  • DMR Bikes hinged clamp for chain devices, bottle cages, and mudguards, shown attached to a bike component.DMR Bikes hinged clamp for chain devices, bottle cages, and mudguards, showcasing the sturdy metal component with hinge mechanism.

                                    DMR Bikes Hinged Clamp for Chain Devices, Bottle Cages & Mudguards Accessories - Silver

                                    The DMR Hinged Clamp offers a versatile solution for securing DMR chain devices firmly in place. Designed for durability, it also supports mounting bottle cages and mudguards on frames lacking standard fixing points. Its robust construction ensures reliable performance under various riding conditions, making...
                                    £5.27
                                    £6.00
                                    £5.27
                                    Save £0.73
                                    • Silver
                                  • Aenomaly SwitchGrade 2.0 EVO bike saddle angle adjustment switch component showing the compact, adjustable switch mechanism.

                                      Aenomaly SwitchGrade 2.0 EVO Saddle Angle Adjustment Switch for Bikes - Black

                                      The Aenomaly SwitchGrade 2.0 EVO Saddle Angle Adjustment Switch revolutionizes your riding experience by allowing you to change saddle angle effortlessly while on the move. Designed for riders seeking comfort and peak performance, this innovative component addresses common issues such as back pain and...
                                      £160.64
                                      £169.99
                                      £160.64
                                      Save £9.35
                                      • Black
                                    • Placeholder image

                                      Crankbrothers Highline Cartridge Assembly Replacement for Highline XCG Seatpost Drop Sizes

                                      The Crankbrothers Highline Cartridge Assembly offers a reliable replacement for your Highline XCG seatpost, ensuring smooth performance and durability. Designed to fit various drop sizes, it maintains your seatpost’s precision and comfort. Available in Short and Regular versions, it suits different setups with ease,...
                                      £84.99
                                      £84.99
                                    • Crankbrothers Highline XCG Service Kit

                                        Crankbrothers Highline XCG Seatpost Service Kit with Bearings & Seal Assembly Black - Black

                                        Maintain your Crankbrothers Highline XCG seatpost with this comprehensive service kit. It ensures smooth performance and extends the life of your seatpost with all essential replacement parts included. The kit features premium guide blocks, upper and lower bearings, a seal/collar assembly, and a grease...
                                        £24.99
                                        £24.99
                                        • Black
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                                      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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