Thomson

Shop Thomson components at Swinnerton Cycles. Thomson is an American brand producing some of the finest seatposts, stems, and handlebar components in cycling — machined from aerospace-grade aluminium in their factory in Georgia, USA. Founded in 1995, Thomson has built a reputation for exceptional quality, precision manufacturing, and products that...

Shop Thomson components at Swinnerton Cycles. Thomson is an American brand producing some of the finest seatposts, stems, and handlebar components in cycling — machined from aerospace-grade aluminium in their factory in Georgia, USA. Founded in 1995, Thomson has built a reputation for exceptional quality, precision manufacturing, and products that last a lifetime. Their Elite seatpost is widely regarded as the benchmark for alloy seatpost quality, and their stems are trusted by professional riders across multiple disciplines.

Every Thomson component is made in the USA to exacting tolerances, with a focus on strength, reliability, and the kind of quality that justifies the investment for cyclists who want the best.

  • Elite and Masterpiece seatposts in setback and inline configurations
  • X4 and Elite stems in multiple lengths and rises
  • Seatpost collar replacement bolts, washers, and hardware
  • Available in black and silver finishes
  • Machined from aerospace-grade aluminium in Georgia, USA
  • Lifetime warranty on all Thomson components

Thomson Best Sellers

Browse our full range of bike seatposts, stems, and bike components at Swinnerton Cycles.

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  • Thomson gravel handlebar with 25° flare, 31.8mm clamp, and 44cm length, designed for drop bar gravel cycling.Thomson gravel handlebar with 25° flare, 31.8mm clamp, 44cm width, designed for drop bar cycling components.

      Thomson Carbon Dirt Drop Bar 25° Flare 31.8mm Clamp x 44cm Gravel Handlebar

      Experience the perfect blend of performance and durability with the Thomson Carbon Dirt Drop Drop Bar. Crafted from premium Toray Carbon Fibre and enhanced with tailor-made Nano Epoxy Resin, this handlebar offers exceptional impact resistance ideal for gravel and adventure riding. Its 25° flare...
      £265.00
      £265.00
    • Thomson Masterpiece inline MTB seatpost with durable construction and infinite tilt adjustment for mountain biking components.Black Thomson Masterpiece inline MTB seatpost with durable construction and infinite tilt adjustment, shown installed on a mountain bike.

      Thomson Masterpiece Inline Seatpost – Durable MTB Seatpost with Infinite Tilt Adjustment - Black

      The Thomson Masterpiece Inline Seatpost redefines strength and precision in bicycle components. Crafted from high-strength 7000 series aluminium, this seatpost is machined from a single piece, ensuring unmatched durability and a sleek, seamless design. Its expert machining process, including the oval inner diameter, reduces...
      £165.00
      £165.00
      • Black
    • Thomson Masterpiece Ti bicycle seatpost in brushed finish, 27.2mm diameter, 410mm length with tilt adjustment and impact-absorbing clamps.Thomson Masterpiece Ti seatpost in brushed finish, 27.2mm diameter, 410mm length with tilt adjustment and impact-absorbing clamps.

        Thomson Masterpiece Ti Seatpost Brushed 27.2 x 410mm with Tilt Adjustment & Impact-Absorbing Clamps

        The Thomson Masterpiece Ti Seatpost in Brushed finish combines exceptional durability with lightweight titanium construction, offering cyclists a superior component for enhanced riding comfort and reliability. Its 27.2 x 410mm dimensions provide a perfect fit for a variety of bike frames, while the innovative...
        £350.00
        £350.00
      • Thomson Elite setback bike seatpost made of high-strength alloy for road and mountain bikes, shown installed on a bicycle.Thomson Elite setback bike seatpost in black, high-strength aluminum for road and MTB bikes, showing the sleek, durable design.

        Thomson Elite Setback Seatpost – Durable, High-Strength Bike Seatpost for Road & MTB - Black

        The Thomson Elite Seatpost Setback Seatpost redefines durability and precision for cyclists who demand the best from their components. Crafted from a single piece of high-strength 7000 series Aluminium, this seatpost ensures unmatched strength without compromising on weight. Its innovative design delivers over 40%...
        £95.00
        £95.00
        • Black
      • Thomson Masterpiece carbon fiber seatpost with titanium hardware and alloy clamp for lightweight bike components.Thomson Masterpiece carbon fiber seatpost with matte finish, titanium hardware, and alloy clamp visible on sleek bike component

        Thomson Masterpiece Carbon Fiber Seatpost with Titanium Hardware and Alloy Clamp - Black

        The Thomson Masterpiece Carbon Seatpost blends advanced materials with precision engineering to elevate your ride. Crafted from Toray fiber and nano epoxy, it offers exceptional strength and lightweight performance. Featuring new titanium hardware and a reliable alloy clamp, this seatpost ensures a secure and...
        £275.00
        £275.00
        • Black
      • Thomson Elite Black Spacer Kit with 20mm, 10mm, and 5mm spacers for stem height adjustment, components for bike buildsBlack Thomson Elite Spacer Kit with 20mm, 10mm, and 5mm spacers for stem height adjustment on bike components.

          Thomson Elite Spacer Kit Black 20mm 10mm 5mm for Stem Height Adjustment

          Upgrade your bike’s fit and finish with the Thomson Spacer Kit, featuring precision-machined spacers in 20mm, 10mm, and 5mm sizes. Crafted to complement the Thomson Elite components, these spacers ensure a sleek, professional look while allowing fine adjustments to your stem height. Available in...
          £25.00
          £25.00
        • Thomson Silver Standard Saddle Rail Clamps for durable seatpost support, shown in a close-up view of the component.Silver Thomson Standard Saddle Rail Clamps for bike seatposts, showing the durable metal clamps with mounting screws.

            Thomson Standard Saddle Rail Clamps Silver – Durable Seatpost Support

            Thomson Standard Saddle Rail Clamps provide reliable support for your saddle. Crafted in silver, they ensure a secure fit and durability for long rides. These clamps are essential for maintaining seatpost stability and comfort. What It’s Good For Securing saddle rails firmly Compatible with...
            £20.00
            £20.00
          • Thomson oversized silver saddle rail bike clamp for securing seatposts, showcasing durable metal construction.Thomson silver oversized saddle rail clamp for bike seatposts, featuring a sturdy component design for secure mounting.

              Thomson Oversized Saddle Rail Clamps Silver – Secure Bike Seatpost Clamp

              Thomson's Oversized Saddle Rail Clamps in silver provide a secure and durable connection for your saddle. Designed for compatibility with various seatposts, they offer reliable performance and easy installation. Crafted with precision, these clamps ensure your saddle stays firmly in place, enhancing ride comfort...
              £20.00
              £20.00
            • Thomson oversized saddle rail clamp in black for seatposts, component part designed for bike saddle support.Thomson black oversized saddle rail clamps for seatposts, showing close-up of the durable component for bike saddle attachment.

                Thomson Oversized Saddle Rail Clamps Spare - Black, Compatible with Seatposts

                Thomson Spare Oversized Saddle Rail Clamps offer reliable compatibility with a variety of seatposts. Crafted for durability, their sleek black finish complements any bike design while ensuring secure saddle attachment. These clamps are perfect for upgrading or replacing worn components, maintaining optimal performance without...
                £20.00
                £20.00
              • Thomson Dropper Universal Remote Lever for dropper seatposts, ergonomic and durable bike component control.Thomson universal remote lever for dropper seatposts, ergonomic bike component, durable control for smooth saddle adjustments.

                  Thomson Dropper Universal Remote Lever for Dropper Seatposts – Durable & Ergonomic Control

                  The Thomson Dropper Universal Remote Lever offers seamless control and precision for your dropper seatpost setup. Engineered with quality and durability in mind, this universal remote lever is compatible with a variety of Thomson dropper posts, providing effortless operation and reliable performance on every...
                  £60.00
                  £60.00
                • Thomson titanium flat handlebar, 730mm wide with 6° sweep, designed for MTB bikes with 31.8mm stem compatibility.Thomson titanium flat handlebar 730mm with 6° rise for 31.8mm MTB stems, EN certified, shown with mounting area and branding.

                  Thomson Titanium Flat Handlebar 730mm 6 Degree for 31.8mm MTB Stems EN Certified

                  Experience exceptional ride quality with the Thomson Titanium Handlebar Flat 0 x 730 6 Degree. Crafted from premium titanium, this handlebar offers a perfect balance of strength and lightweight performance, delivering a smooth and responsive ride. Its sleek design not only enhances your bike’s...
                  £275.00
                  £275.00
                • Thomson Elite BMX stem in black with 0° angle, 50mm length, 22.2mm handlebar clamp, bicycle component for BMX bikes.Black Thomson Elite BMX stem with 50mm length, 0° angle, 22.2mm clamp, designed for BMX handlebar components

                  Thomson Elite BMX Stem Black 0° 50mm Clamp 22.2mm Handlebar Stem

                  Experience unmatched control and durability with the Thomson Elite Stem BMX Black 0 x 50 x 22.2. Crafted from high-grade 7000 series aluminium, this stem boasts a one-piece design free of welds or joints, ensuring exceptional strength and longevity. Its 50mm wide clamp and...
                  £95.00
                  £95.00
                • Thomson black saddle rail clamps for bike seatposts, durable and corrosion-resistant bike component replacement.Black Thomson saddle rail clamps for bike seatposts, made of durable metal, designed to secure and adjust saddle position.

                  Thomson Standard Saddle Rail Clamps Black – Durable Bike Seatpost Replacement

                  Upgrade your bike with Thomson's Standard Saddle Rail Clamps. Designed for durability and a secure fit, these black clamps ensure your saddle stays perfectly in place. Ideal for maintaining or enhancing your seatpost setup with reliable performance. What It’s Good For Securing saddles firmly...
                  £20.00
                  £20.00
                • Thomson replacement nut, bolt, and washer set for seatpost stem maintenance, showing metallic components arranged together.Thomson replacement nut, bolt, and washer set for seatpost and stem maintenance, showing metal components on a neutral background.

                  Thomson Replacement Nut Bolt Washer Set for Seatpost Stem Maintenance

                  Keep your Thomson seatpost, stem, or collar in top condition with this Replacement Nut Bolt Washer Set. Designed for durability, these small parts ensure a secure fit and reliable performance every ride. Compatible with all Thomson models, this finishing kit offers peace of mind...
                  £6.00
                  £6.00
                • Thomson silver replacement clamp for X4 31.8mm stem and seatpost, showing the component's design and finish.Thomson silver replacement clamp for X4 31.8mm stem and seatpost, component spare part for bicycle components.

                  Thomson Replacement Clamp for X4 31.8mm Stem & Seatpost Silver Spare Part

                  Upgrade your bike with the Thomson Replacement Clamp for X4 (31.8) in sleek silver. Designed for durability and perfect fit, it ensures reliable stem and seatpost performance. Compatible with various Thomson models, this clamp provides a secure hold for smooth steering and enhanced control....
                  £12.00
                  £12.00
                • Silver Thomson 1 1/8 bike stem cap for securing bike stems and seatposts, shown on a white background.Silver Thomson 1 1/8 bike stem cap, a spare component for bike stems and seatposts, designed for secure fitting and style.

                  Thomson 1 1/8 Stem Cap Silver Spare Part for Bike Stems and Seatposts

                  Enhance your bike’s performance with the Thomson 1 1/8 Stem Cap in sleek silver. Designed for durability and perfect fit, it ensures reliable steering and secure stem assembly. This precision-crafted component is compatible with a wide range of Thomson stems and seatposts, making it...
                  £10.00
                  £10.00
                • thomson handlebar titanium handlebar riser p100732

                  Thomson Titanium Handlebar Riser 15 x 800mm for 31.8mm Stems – Durable MTB & Road Bike Bar

                  The Thomson Titanium Handlebar Riser 15 x 800 offers a perfect balance of strength and comfort. Crafted from durable titanium, it provides a smooth, responsive ride that enhances control without compromising on style. Designed specifically for 31.8mm stems, this handlebar requires no shims, ensuring...
                  £460.00
                  £460.00
                • Thomson Masterpiece Titanium seatpost with brushed finish, 27.2mm diameter, 350mm length, tilt adjustment for bike components.Thomson Masterpiece Titanium seatpost with brushed finish, 27.2mm diameter, 350mm length, and tilt adjustment for bike components.

                  Thomson Masterpiece Titanium Seatpost Brushed 27.2 x 350mm with Tilt Adjustment

                  The Thomson Masterpiece Ti Seatpost Brushed 27.2 x 350 combines exceptional strength with lightweight titanium construction, offering a superior upgrade for your bike. Engineered with proven saddle clamps paired with titanium hardware, this seatpost provides a generous 1.614 inch (41mm) seat rail grip length,...
                  £350.00
                  £350.00
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