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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  • crank brothers crankbrothers seatpost spares s post highline barrel nut p109261

      Crankbrothers Highline Seatpost Barrel Nut – Durable Bike Seatpost Component

      The Crankbrothers Seatpost Highline Barrel Nut is a meticulously engineered component designed to optimize the performance and reliability of your bike’s seatpost system. Manufactured by Crankbrothers, a renowned leader in cycling components, this barrel nut acts as a crucial finishing kit piece that ensures...
      £4.99
      £4.99
    • crank brothers crankbrothers seatpost spares s post highline 7 crtdge assy 150mm p109259

        Crankbrothers Highline 7 Cartridge Assembly 150mm Seatpost Replacement Part

        The Crankbrothers Highline 7 Cartridge Assembly 150mm is engineered to elevate your mountain biking experience by providing smooth, reliable seatpost performance. Designed by Crankbrothers, a leader in innovative cycling components, this cartridge assembly guarantees consistent operation and enhanced adjustability, perfectly suited for diverse terrains...
        £84.99
        £84.99
      • crank brothers crankbrothers seatpost spares s post highline 7 crtdge assy 125mm p109258

          Crankbrothers Highline 7 Cartridge Assembly 125mm for Mountain Bike Dropper Post Maintenance

          The Crankbrothers Highline 7 Cartridge Assembly 125mm is a meticulously engineered component designed to elevate the functionality of your mountain bike’s seatpost. Manufactured by Crankbrothers, a leader in innovative cycling solutions, this cartridge assembly guarantees seamless and reliable performance. Its 125mm length offers excellent...
          £84.99
          £84.99
        • crank brothers crankbrothers seatpost spares s post highline 7 crtdge assy 100mm p109257

            Crankbrothers Highline 7 Cartridge Assembly 100mm Seatpost Replacement Part

            The Crankbrothers Highline 7 Cartridge Assembly 100mm is an essential upgrade designed to keep your bike’s seatpost operating flawlessly. Engineered specifically for the Highline 7 seatpost, this cartridge assembly guarantees seamless compatibility and optimal performance. Built with premium materials, it offers durability and smooth...
            £84.99
            £84.99
          • crank brothers crankbrothers seatpost spares s post highline 3 quill assy 170mm p109256

              Crankbrothers Highline 3 Quill Assembly 170mm – Seatpost Finishing Kit for Bikes

              The Crankbrothers Highline 3 Quill Assembly 170mm is a meticulously crafted component designed to elevate your bike's performance and reliability. As a finishing kit for seatposts, it guarantees a secure and stable fit, making it an indispensable upgrade for cyclists who value precision and...
              £36.99
              £36.99
            • crank brothers crankbrothers seatpost spares s post highline 3 quill assy 125mm p109254

                Crankbrothers Highline 3 Quill Assembly 125mm for Dropper Seatposts

                The Crankbrothers Highline 3 Quill Assembly 125mm is expertly crafted to deliver superior performance and durability for your bike’s seatpost system. Designed by Crankbrothers, a leader in innovative cycling components, this assembly offers a precise fit and reliable connection between your frame and seatpost....
                £36.99
                £36.99
              • crank brothers crankbrothers seatpost spares s post highline 3 quill assy 100mm p109253

                  Crankbrothers Highline 3 Quill Assembly 100mm – Bike Seatpost Finishing Kit

                  The Crankbrothers Highline 3 Quill Assembly 100mm is a meticulously crafted component designed to elevate your bicycle’s performance and reliability. As a finishing kit for seatposts, this assembly ensures a secure and stable connection, enhancing the overall ride experience. Its 100mm length fits a...
                  £36.99
                  £36.99
                • crank brothers crankbrothers seatpost spares s post highline 3 crtdge assy 170mm p109252

                    Crankbrothers Highline 3 Seatpost Cartridge Assembly 170mm for Bikes

                    The Crankbrothers Seatpost Highline 3 Cartridge Assy 170mm is engineered to deliver superior performance and reliability for your bike’s seatpost system. Designed by Crankbrothers, a reputable brand known for precision cycling components, this cartridge assembly offers a seamless fit and smooth operation. Its 170mm...
                    £42.99
                    £42.99
                  • crank brothers crankbrothers seatpost spares s post highline 3 crtdge assy 150mm p109251

                      Crankbrothers Highline 3 Seatpost Cartridge Assembly 150mm for Bike Comfort

                      The Crankbrothers Seatpost Highline 3 Cartridge Assy 150mm is expertly crafted to elevate your cycling experience by providing superior comfort and control. Designed with precision, this seatpost assembly ensures smooth and consistent operation, enhancing both performance and ride stability. Its 150mm length offers a...
                      £42.99
                      £42.99
                    • 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
                      • crank brothers crankbrothers seatpost spares s post highline 3 crtdge assy 100mm p109249

                          Crankbrothers Highline 3 Seatpost Cartridge Assembly 100mm Dropper Post Part

                          The Crankbrothers Seatpost Highline 3 Cartridge Assembly 100mm is a meticulously crafted component designed to elevate your cycling experience. Engineered by Crankbrothers, a leader in innovative bike components, this cartridge assembly seamlessly integrates with the Highline 3 dropper post system, providing 100mm of smooth...
                          £42.99
                          £42.99
                        • Placeholder image

                            Cane Creek Thudbuster G4 Suspension Seatpost O-Ring Replacement Kit

                            Upgrade your Cane Creek Thudbuster G4 with this essential O-Ring Kit. Designed to keep your suspension seatpost sealed and performing smoothly, this kit ensures long-lasting reliability and optimal comfort on every ride. Easy to install and made from durable materials, these O-rings help prevent...
                            £3.99
                            £3.99
                          • Crank Brothers Highline 3 Cartridge Screw Spares & AccessoriesCrankbrothers Highline 3 Cartridge Screw Black | Swinnerton Cycles

                              Crankbrothers Highline 3 Cartridge Screw Replacement Black for Seatpost Assembly

                              The Crankbrothers Highline 3 Cartridge Screw in Black offers a precise replacement for your seatpost assembly. Crafted for durability, it ensures secure fastening and optimal performance. Designed specifically for the Highline 3, this cartridge screw is an essential component to maintain your bike's reliability...
                              £1.00
                              £1.00
                            • Crankbrothers Highline 3 Outer Body Spares & AccessoriesCrankbrothers Highline 3 Outer Body Black | Swinnerton Cycles

                                Crankbrothers Highline 3 Outer Body Replacement Part Black for Dropper Post

                                The Crankbrothers Highline 3 Outer Body in Black offers a precise fit for your dropper post upgrade or repair. Designed to match various diameters and lengths, it ensures seamless compatibility with the Highline 3 range. Crafted for durability and performance, this replacement part maintains...
                                £24.99
                                £24.99
                              • Crankbrothers Seatpost Highline 3 Quill Assy 200Mm Spares & AccessoriesCrankbrothers Highline 3 Quill Assembly 200mm | Swinnerton Cycles

                                  Crankbrothers Highline 3 Quill Assembly 200mm Replacement Seatpost Part

                                  Upgrade your Crankbrothers Highline 3 with this precise 200mm quill assembly. Designed to ensure a secure fit and smooth operation, it’s the perfect replacement part for maintaining optimal performance. Crafted with quality materials, this quill assembly offers durability and reliability, helping you extend the...
                                  £36.99
                                  £36.99
                                • Crankbrothers Highline 3 / Xcg Replacement Clamp Screw Spares & AccessoriesCrankbrothers Highline 3 / XCG replacement clamp screw Black | Swinnerton Cycles

                                    Crankbrothers Highline 3 XCG Replacement Clamp Screw Black for Seatpost Maintenance

                                    Upgrade your Crankbrothers Highline 3 / XCG seatpost with this durable replacement clamp screw. Designed for a perfect fit, it ensures secure and reliable performance. Made from high-quality materials, this black clamp screw offers long-lasting strength and resistance to wear. Ideal for maintenance and...
                                    £4.99
                                    £4.99
                                  • Trek Madone Gen 8 black seatpost wedge assembly, bike component for securing the seatpost on a Trek road bike.Trek Madone Gen 8 black seatpost wedge assembly for secure fit bike component, shown attached to bike seatpost.

                                      Trek Madone Gen 8 Seatpost Wedge Assembly Black - Secure Fit Bike Component

                                      The Trek Madone Gen 8 Seatpost Wedge Assembly in black is a meticulously crafted component designed to enhance the stability and performance of your Trek Madone Gen 8 road bike. This precision-engineered wedge assembly ensures a secure connection between the seatpost and frame, delivering...
                                      £34.99
                                      £34.99
                                    • Bontrager Line Dropper 31.6mm actuator assembly with finishing kit in black, showing detailed components for bike dropper post.Bontrager Line Dropper 31.6mm actuator assembly with finishing kit in black, showing detailed components and finish.

                                        Bontrager Line Dropper 31.6mm Actuator Assembly with Finishing Kit Black

                                        Upgrade your bike with the Bontrager Line Dropper 31.6mm Actuator Assembly. This durable component ensures smooth and reliable seatpost adjustments on the go. Crafted for easy installation and compatibility with Bontrager seatposts, it enhances your ride experience with precision control. What It’s Good For...
                                        £10.99
                                        £10.99
                                      • Bontrager Line Dropper 31.6Mm Dropper Post Dust Seal Spares & AccessoriesBontrager Line Dropper 31.6mm Dropper Post Dust Seal Black One size | Swinnerton Cycles

                                          Bontrager Line Dropper Post Dust Seal 31.6mm Black One Size Replacement

                                          The Bontrager Line Dropper 31.6mm Dropper Post features a durable dust seal for smooth operation and long-lasting performance. Designed to fit seamlessly with your bike, it ensures reliable seatpost adjustment on the trail. What It’s Good For Maintains smooth seatpost movement with an effective...
                                          £7.99
                                          £7.99
                                        • Bontrager Line Dropper 31.6Mm Seatpost Cartridge Spares & AccessoriesBontrager Line Dropper 31.6Mm Seatpost Cartridge Spares & Accessories

                                          Bontrager Line Dropper 31.6mm Seatpost Cartridge Replacement & Accessories - Silver

                                          Upgrade your bike with the Bontrager Line Dropper 31.6mm seatpost cartridge, designed for smooth and reliable performance. This cartridge fits perfectly for easy installation and maintenance. Engineered with durability in mind, it ensures consistent dropper functionality, enhancing your ride control and comfort on varied...
                                          £34.99
                                          £34.99
                                          • Silver
                                        • Bontrager Line Dropper 2-Bolt Saddle Clamp Assembly Spares & AccessoriesBontrager Line Dropper 2-Bolt Saddle Clamp Assembly Black One size | Swinnerton Cycles

                                            Bontrager Line Dropper 2-Bolt Saddle Clamp Assembly Black for Secure Bike Saddles

                                            Upgrade your bike with the Bontrager Line Dropper 2-Bolt Saddle Clamp Assembly. Designed for durability and secure fitting, this black clamp ensures your saddle stays perfectly in place. Easy to install and compatible with various seatposts, it offers reliable performance for smooth rides. A...
                                            £12.99
                                            £12.99
                                          • Bontrager Line Dropper Post Keyway Kit Spares & AccessoriesBontrager Line Dropper Post Keyway Kit Grey One size | Swinnerton Cycles

                                              Bontrager Line Dropper Post Keyway Kit Grey - One Size Seatpost Accessory

                                              Enhance your Bontrager Line Dropper Post with this Grey Keyway Kit. Designed for easy installation and durable performance, it ensures a secure fit and smooth operation. This finishing kit is essential for maintaining your seatpost’s reliability and style. Crafted by Bontrager, it offers premium...
                                              £6.99
                                              £6.99
                                            • Bontrager Line Dropper 34.9Mm Dropper Seatpost Bushing Kit Spares & AccessoriesBontrager Line Dropper 34.9mm Seatpost Bushing Kit Grey One size | Swinnerton Cycles

                                                Bontrager Line Dropper Seatpost Bushing Kit 34.9mm Grey One Size Replacement

                                                Upgrade your Bontrager Line Dropper seatpost with this 34.9mm bushing kit for smooth operation and durability. Designed for easy installation and reliable performance, it keeps your dropper post functioning like new. What It’s Good For Ensuring smooth and consistent seatpost movement Extending the life...
                                                £4.99
                                                £4.99
                                              • Bontrager Line Dropper 34.9Mm Dropper Seatpost Dust Seal Spares & AccessoriesBontrager Line Dropper 34.9mm Dropper Seatpost Dust Seal Black One size | Swinnerton Cycles

                                                  Bontrager Line Dropper Seatpost Dust Seal 34.9mm Black Replacement Part

                                                  The Bontrager Line Dropper 34.9mm Dust Seal ensures smooth seatpost operation by keeping dirt out. Designed for durability, it extends the life of your dropper post. What It’s Good For Protects the dropper seatpost from dust and debris Maintains smooth and reliable seatpost movement...
                                                  £9.99
                                                  £9.99
                                                • bontrager seatpost parts line dropper seatpost cartridge mounting screw p121022Bontrager Line Dropper Seatpost Cartridge Mounting Screw Black M6 x 9mm | Swinnerton Cycles

                                                    Bontrager Line Dropper Seatpost M6 x 9mm Cartridge Mounting Screw Black

                                                    Secure your Bontrager Line Dropper Seatpost with this reliable M6 x 9mm mounting screw. Designed for precision and durability, it ensures a stable connection for smooth seatpost adjustments. What It’s Good For Provides a strong, secure fit for your dropper seatpost cartridge Durable black...
                                                    £3.99
                                                    £3.99
                                                  • Trek Seatpost Part Madone Slr Seatpost Wedge Assembly Spares & AccessoriesTrek Madone Gen 7 Seatpost Wedge Assembly Black One size | Swinnerton Cycles

                                                      Trek Madone Gen 7 Seatpost Wedge Assembly Black Compatible with Madone SLR

                                                      Upgrade your ride with the Trek Madone Gen 7 Seatpost Wedge Assembly. Designed for a secure fit, it enhances seatpost stability and overall comfort. What It’s Good For Ensures a tight, reliable seatpost connection Compatible with Trek Madone SLR models Durable materials for long-lasting...
                                                      £29.99
                                                      £29.99
                                                    • Trek Seatpost Part Speed Concept Di2 Batt Holder Assembly Spares & AccessoriesTrek Speed Concept Di2 Battery Holder Assembly Black One size | Swinnerton Cycles

                                                        Trek Speed Concept Di2 Battery Holder Assembly Black One Size for Aero Bikes

                                                        The Trek Speed Concept Di2 Battery Holder Assembly in black is designed for seamless integration with your bike. It offers a secure and sleek way to mount your Di2 battery, ensuring reliable performance on every ride. Crafted to fit perfectly with the Speed Concept...
                                                        £8.99
                                                        £8.99
                                                      • Trek Seatpost Part Speed Concept Wedge Spares & AccessoriesTrek Speed Concept Seatpost Wedge Black One size | Swinnerton Cycles

                                                          Trek Speed Concept Seatpost Wedge Black – Bike Seatpost Stability Accessory One Size

                                                          Upgrade your bike with the Trek Speed Concept Seatpost Wedge Black. Designed for a precise fit, this component enhances stability and comfort on every ride. Its sleek black finish complements your bike’s aesthetic while delivering reliable performance. Crafted as part of Trek’s finishing kit,...
                                                          £24.99
                                                          £24.99
                                                        • Trek Seatpost Part Speed Concept Light Mount Assembly Spares & AccessoriesTrek Speed Concept Tail Light Mount Black One size | Swinnerton Cycles

                                                            Trek Speed Concept Tail Light Mount for Seatpost Black One Size

                                                            The Trek Speed Concept Tail Light Mount enhances your bike's safety by securely attaching your rear light. Designed for seamless integration with your seatpost, it offers a sleek and reliable mounting solution. Crafted from durable materials, this black mount complements your bike's aesthetics while...
                                                            £13.99
                                                            £13.99
                                                          • Trek Seatpost Part Speed Concept Di2 Battery Holder Black Spares & AccessoriesTrek 2022 Speed Concept Di2 Battery Holder Black One size | Swinnerton Cycles

                                                              Trek 2022 Speed Concept Di2 Battery Holder Black | Secure Fit One Size

                                                              The Trek 2022 Speed Concept Di2 Battery Holder in black offers a sleek, secure solution for housing your Di2 battery. Designed for seamless integration with your Speed Concept bike, it ensures reliable performance and easy maintenance. What It’s Good For Securely holds the Di2...
                                                              £6.99
                                                              £6.99
                                                            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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