Trek

Trek is one of the world's most iconic bicycle brands — an American manufacturer founded in Waterloo, Wisconsin in 1976, producing road, mountain, hybrid, and e-bikes for cyclists at every level from beginner to professional. Trek bikes are ridden by Tour de France winners, World Cup mountain bike racers, and...

Trek is one of the world's most iconic bicycle brands — an American manufacturer founded in Waterloo, Wisconsin in 1976, producing road, mountain, hybrid, and e-bikes for cyclists at every level from beginner to professional. Trek bikes are ridden by Tour de France winners, World Cup mountain bike racers, and millions of everyday cyclists worldwide, with a product range that spans entry-level trail bikes to flagship carbon race machines. At Swinnerton Cycles, we stock Trek bikes, frame parts, and accessories for cyclists looking for one of the world's most trusted and recognised bicycle brands.

Our Trek range includes the Marlin 4 Gen 3 mountain bike — Trek's entry-level hardtail MTB designed for trail riding with a durable, adaptive frame — alongside genuine Trek frame parts and accessories including full suspension rocker pivot bolts and water bottle nutsert plugs for maintaining and repairing Trek bikes.

Why Choose Trek?

  • American bicycle brand founded in Waterloo, Wisconsin in 1976
  • Ridden by Tour de France winners and World Cup mountain bike racers worldwide
  • Marlin 4 Gen 3 entry-level hardtail MTB with durable, adaptive frame for trail riding
  • Genuine Trek frame parts including M10x1mm full suspension rocker pivot bolts
  • Water bottle nutsert plug M4 x 13mm for secure bottle cage mounting on Trek frames
  • One of the world's most trusted and recognised bicycle brands across all disciplines

Top Selling Trek Products

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  • Trek Fsa Zs Tapered Steer Headsets Spares & AccessoriesFSA ZS Tapered Steer Headsets Black 28.6mm (1-1/8") / 38.1mm (1-1/2") | Swinnerton Cycles

      FSA ZS Tapered Steer Headset Black 28.6mm to 38.1mm for Smooth Bike Steering

      Upgrade your bike's steering with the FSA ZS Tapered Steer Headset in sleek black. Designed for precision and durability, it ensures smooth handling on every ride. With a tapered design of 28.6mm (1-1/8") to 38.1mm (1-1/2"), this headset fits seamlessly, enhancing control and stability....
      £42.51
      £44.99
      £42.51
      Save £2.48
    • Trek E2 Tapered Steer Integrated Headsets With Reducer Spares & AccessoriesTrek E2 Tapered Steer Integrated Headsets with Reducer Black 28.6mm (1-1/8") / 38.1mm (1-1/2") | Swinnerton Cycles

        Trek E2 Tapered Steer Integrated Headset with Reducer 28.6mm to 38.1mm Black

        Upgrade your bike’s steering with the Trek E2 Tapered Steer Integrated Headset. Designed for seamless compatibility from 28.6mm (1-1/8") to 38.1mm (1-1/2"), it ensures smooth control and durability. Crafted with precision, this headset offers reliable performance for various riding styles. Its sleek black finish...
        £42.51
        £44.99
        £42.51
        Save £2.48
      • Trek E2 Fsa Headset Lower Bearing 36-Degree Spares & AccessoriesTrek E2 FSA Headset Lower Bearing 36-Degree Grey Grey Size | Swinnerton Cycles

          Trek E2 FSA 36-Degree Lower Headset Bearing Grey for Trek Frames

          The Trek E2 FSA Headset Lower Bearing 36-Degree Grey is designed to deliver precise and dependable steering for your bike. Crafted by Trek, this component fits perfectly with specific Trek frames thanks to its 36-degree angle, ensuring stability and optimal control. Its grey finish...
          £33.06
          £34.99
          £33.06
          Save £1.93
        • Trek Bar Part Speed Concept Tower Topper Left Far Spares & AccessoriesTrek Bar Part Speed Concept Tower Topper Left Far Spares & Accessories | Swinnerton Cycles

            Trek Speed Concept Left Tower Topper Bar Part – Spare & Accessory

            Upgrade your Trek Speed Concept with this left tower topper bar part. Designed for precise steering and easy installation, it ensures optimal control during rides. Crafted as a reliable spare, it maintains your bike's performance and prolongs its lifespan. Perfect for riders seeking quality...
            £37.79
            £39.99
            £37.79
            Save £2.20
          • Trek Bar Part Speed Concept Tower Topper Right Far Spares & AccessoriesTrek Bar Part Speed Concept Tower Topper Right Far Spares & Accessories | Swinnerton Cycles

              Trek Speed Concept Tower Topper Right Far Bar Part – Spares & Accessories

              Upgrade your ride with the Trek Speed Concept Tower Topper Right Far. Designed for precise steering and enhanced control, this component fits seamlessly with your setup. Crafted for durability and performance, it’s an essential spare for serious cyclists. What It’s Good For Improves handlebar...
              £37.79
              £39.99
              £37.79
              Save £2.20
            • Trek Bar Part Speed Concept Bar 30Mm Base Tower Spares & AccessoriesTrek Bar Part Speed Concept Bar 30Mm Base Tower Spares & Accessories | Swinnerton Cycles

                Trek Speed Concept Bar 30mm Base Tower Replacement Part & Accessories

                Upgrade your bike's handling with the Trek Speed Concept Bar 30mm Base Tower. Designed for precision and durability, this component enhances steering control for a smoother ride. Crafted by Trek, it fits seamlessly with your Speed Concept setup, ensuring reliable performance and easy installation....
                £18.89
                £19.99
                £18.89
                Save £1.10
              • Pink Trek Kids handlebar tassels, 113mm pair, designed for 2015 Dialed grips, add fun and visibility to children's bikes.Pink Trek Kids handlebar tassels for 2015 Dialed grips, pair, 113mm fit, colorful bicycle accessories for children.

                  Trek Kids Handlebar Tassels Pink for 2015 Dialed Grips, Pair, 113mm Fit

                  Upgrade your child's bike with Trek Kids Handlebar Tassels in vibrant pink, designed exclusively for 2015 Dialed Grips. These tassels add fun flair while fitting perfectly on 113mm (4.5") grips. Durable and easy to install, they refresh the bike's look and provide an extra...
                  £4.71
                  £4.99
                  £4.71
                  Save £0.28
                • Trek Riser Cruiser Handlebar 25.4mm silver with 20° rise, 665mm width, and 150mm extension, bike component for comfortable riding.Trek Riser 25.4 Cruiser handlebar with 20-degree rise in silver, 665mm length, designed for bicycle components.

                    Trek Riser 25.4 Cruiser Handlebar 20 Degree Rise Silver 665mm x 150mm

                    Elevate your ride with the Trek Riser 25.4 20 Degree Cruiser Handlebar. Crafted from durable 6061-T6 polished aluminum, it offers strength and a sleek silver finish. Its 665mm width and 150mm rise ensure comfortable control and smooth steering on any trail. What It’s Good...
                    £18.89
                    £19.99
                    £18.89
                    Save £1.10
                  • Trek Kids' MTB handlebar grips for mountain bikes, showing comfortable, durable rubber grips with textured surface for better grip.Trek Kids' MTB handlebar grips for mountain bikes, showing comfortable, durable rubber grips with textured surface for better grip.

                      Trek Kids' MTB Grips for Mountain Bikes – Comfortable, Durable Handlebar Grips - Black

                      Upgrade your child's mountain bike with Trek Kids' MTB Grips for superior comfort and control. These grips ensure a secure hold and enhance steering precision on every trail. What It’s Good For Providing a comfortable and secure grip for young riders Improving steering control...
                      £8.49
                      £8.99
                      £8.49
                      Save £0.50
                      • Black
                    • Trek Boone 700c carbon rigid fork in blue smoke and royal, 330mm length, 45mm offset, bike component for mountain bikesTrek Boone 2021 700c carbon rigid fork in blue smoke and royal, 330mm length, 45mm offset, bike component.

                        Trek 2021 Boone 700c Carbon Rigid Forks Blue Smoke/Royal 330mm Offset 45mm

                        Experience precise handling with the Trek Boone 700c rigid carbon forks. Designed for road cycling, these forks offer excellent steering control and durability in a sleek Blue Smoke/Royal finish. With a 330mm length and 45mm offset, they provide responsive and stable rides, perfect for...
                        £340.18
                        £359.99
                        £340.18
                        Save £19.81
                      • Trek FX 1 rigid cantilever forks, replacement bike components with silver finish, designed for Trek bikes.Trek FX 1 rigid cantilever forks for bikes, showing black replacement components with mount points for brake and wheel attachment.

                        Trek Fx 1 Rigid Cantilever Forks – Replacement Forks for Trek Bikes - Lithium Grey

                        Upgrade your ride with the Trek Rigid Trek Fx 1 Cantilever Forks, designed for precise steering and durability. These forks offer a color-matched replacement that fits perfectly, ensuring seamless integration with your bike. Crafted for road cycling, they provide reliable performance and enhance control...
                        £113.38
                        £119.99
                        £113.38
                        Save £6.61
                        • Lithium Grey
                      • Trek Emonda SL7 carbon forks for road racing bikes, lightweight aerodynamic bike components, black with Trek branding.Trek Emonda SL7 carbon road bike fork for racing and performance, lightweight and aerodynamic components.

                        Trek Emonda SL7 Carbon Forks for Road Racing and Performance Bikes - Lithium Grey, Onyx Carbon

                        Enhance your ride with Trek Emonda SL7 forks, designed for superior control and lightweight performance. Crafted from carbon, these forks offer precision steering and durability on the road. What It’s Good For Improving bike handling and responsiveness Reducing overall bike weight for better speed...
                        £377.99
                        £399.99
                        £377.99
                        Save £22.00
                        • Lithium Grey, Onyx Carbon
                        • Carbon Smoke, Factory Orange
                        • Carbon Blue Smoke
                        • Radioactive Red, Onyx Carbon
                      • Trek Verve+ 700C bike fork with 205mm disc brake mounts for road bikes, showing the steel fork and brake mounting points.Trek Verve+ 700C road bike fork with 205mm disc brake mounts, lightweight bicycle component for enhanced braking performance

                        Trek Verve+ 700C Forks with 205mm Disc Brake Mounts for Road Bikes - Anthracite

                        Upgrade your Trek Verve+ with the Trek Verve+ 700C Forks, designed for seamless steering and enhanced road performance. These rigid forks ensure durability and precise handling for a smooth ride. Colour-matched to your bike, they offer perfect compatibility and easy installation. Ideal for maintaining...
                        £94.49
                        £99.99
                        £94.49
                        Save £5.50
                        • Anthracite
                      • Trek Cover Rail 29 2022 Battery Cover Spares & AccessoriesTrek Cover Rail 29 2022 Battery Cover Spares & Accessories

                          Trek 2023 Marlin 29 Chainstay Armor Black – Durable Bike Frame Protection

                          The Trek 2023 Marlin 29 Chainstay Armor in Black offers robust protection tailored specifically for your bike’s frame. Designed with durable materials, it shields the chainstay from chain slap and debris, preventing wear and damage over time. Its precise fit ensures seamless integration with...
                          £10.38
                          £10.99
                          £10.38
                          Save £0.61
                        • Black Trek Emonda SL headset cover and headtube protector, durable fit for 2022 road bike components.Black Trek 2022 Emonda SL headset cover and headtube protector, durable fit for bike components.

                            Trek 2022 Emonda SL Headset Cover Black Headtube Protector Durable Fit

                            Protect your Trek Emonda SL headset with this sleek black cover. Designed for durability and a perfect fit, it preserves your bike’s performance and appearance. Easy to install, this cover helps keep dirt and moisture out, extending the life of your headset components. Its...
                            £51.97
                            £54.99
                            £51.97
                            Save £3.02
                          • Trek Domane Sl Frame Parts Spares & AccessoriesTrek Domane Sl Frame Parts Spares & Accessories

                              Trek Internal Frame Cable Exit Guide Black for Cable Management and Smooth Shifting

                              Optimize your bike’s cable routing with the Trek Internal Frame Cable Management Black Cable Exit Guide. Designed for seamless integration and durability, it ensures smooth shifting and braking performance while keeping cables protected and organized inside the frame. Made by Trek, this component is...
                              £9.44
                              £9.99
                              £9.44
                              Save £0.55
                            • Trek Cable Port Screw Spares & AccessoriesTrek Cable Port Screw Spares & Accessories

                                Trek Rocker Pivot Nut Insert M12 Black – Bike Frame Replacement Part

                                The Trek Rocker Pivot Nut Insert Black M12 x is a vital component designed to strengthen the connection points within your bike frame, ensuring enhanced durability and consistent performance. Crafted by Trek, a leader in cycling innovation, this insert fits precisely with M12 threading,...
                                £6.61
                                £6.99
                                £6.61
                                Save £0.38
                              • Trek 2022-2023 Rail 29 Carbon Paint Match 750w Battery Coverstrek frame parts 2022 2023 rail 29 carbon paint match 750w battery covers p130861

                                Trek 2022-2023 Rail 29 Carbon Battery Covers Paint Match 750w Protection - Carbon Red Smoke, Viper Red

                                The Trek 2022-2023 Rail 29 Carbon Paint Match 750w Battery Covers are expertly designed to fit seamlessly with your Trek Rail 29 Carbon frame, perfectly matching the 2022-2023 paint scheme. This ensures your bike maintains its sleek, professional look while providing essential protection for...
                                £132.29
                                £139.99
                                £132.29
                                Save £7.70
                                • Carbon Red Smoke, Viper Red
                                • Orange, Bronze
                                • Red (Dark)
                                • Green Visibility, Black
                              • Trek Cover Powerfly 29 2022 Battery Spares & AccessoriesTrek Rocker Pivot Nut Black M10 x 6mm | Swinnerton Cycles

                                  Trek Rocker Pivot Nut M10 x 6mm for Suspension Frame Support Black

                                  Durable Trek Rocker Pivot Nut designed for optimal frame support. Precision-engineered M10 x 6mm size ensures a secure fit and reliable performance. What It’s Good For Maintaining suspension frame integrity Providing sturdy and reliable pivot connection Easy installation and replacement What It’s NOT Good...
                                  £9.44
                                  £9.99
                                  £9.44
                                  Save £0.55
                                • Trek Suspension Part Trek Mino Link Large Black 2010Trek 2021 Slash 29 Main Pivot Axle Bolt Black 17mm x 87mm | Swinnerton Cycles

                                    Trek 2021 Slash 29 Main Pivot Axle Bolt 17mm x 87mm Black Replacement Part

                                    Upgrade your Trek Slash 29 with this durable 17mm x 87mm main pivot axle bolt. Designed for 2021 models, it ensures a secure and precise fit for smooth suspension performance. Crafted from high-quality materials, this black axle bolt enhances frame stability and longevity. Perfect...
                                    £11.32
                                    £11.99
                                    £11.32
                                    Save £0.67
                                  • Trek Suspension Part Trek Bolt Link Axle Alloy 07 Spares & AccessoriesTrek 2021 Slash 29 Rocker Pivot Axle Bolt Black M12 x 81.3mm | Swinnerton Cycles

                                      Trek 2021 Slash 29 Rocker Pivot Axle Bolt M12 x 81.3mm Black Alloy Bike Part

                                      Upgrade your bike with the Trek 2021 Slash 29 Rocker Pivot Axle Bolt. Crafted from durable alloy, this M12 x 81.3mm bolt ensures a secure fit and long-lasting performance. Its sleek black finish complements the bike's design while providing reliable strength for intense rides....
                                      £12.28
                                      £12.99
                                      £12.28
                                      Save £0.71
                                    • Trek Slash 29 Thru Shaft Frame Grommet for bike frame protection, black rubber component for Trek mountain bike frame.

                                        Trek 2021 Slash 29 Thru Shaft Frame Grommet for Bike Frame Protection

                                        Enhance your bike with the Trek 2021 Slash 29 Thru Shaft Frame Grommet, designed for durability and seamless integration. Its precise fit ensures optimal performance and protection for your frame. What It’s Good For Protecting the thru shaft area from debris and damage Maintaining...
                                        £9.99
                                        £9.99
                                      • Trek M10X1Mm Full Suspension Rocker Pivot Bolt Spares & AccessoriesTrek Boone Cable Management Hardware Kit Black Frame Small Parts Kit | Swinnerton Cycles

                                          Trek Boone Cable Management Hardware Kit for 2014-2018 Frames Small Parts

                                          Ensure your Trek Boone frame stays organized and fully functional with this Cable Management Hardware Kit. Designed for 2014-2018 Boone models, it includes essential small parts to maintain smooth cable routing and protect your bike’s performance. Made to fit perfectly, this kit helps prevent...
                                          £37.79
                                          £39.99
                                          £37.79
                                          Save £2.20
                                        • Trek Power Cable Usb Type-C Charging Cable Spares & AccessoriesTrek Boone Gen 2 Internal IsoSpeed Cover Black Seat tube | Swinnerton Cycles

                                            Trek Boone Gen 2 Internal IsoSpeed Seat Tube Cover Black for 2014-2018 Models

                                            The Trek Boone Gen 2 Internal IsoSpeed Cover in Black is designed to perfectly fit the seat tube, enhancing your bike's comfort and performance. Crafted for 2014-2018 Boone models, it integrates seamlessly with your frame. This component not only protects but also supports the...
                                            £5.65
                                            £5.99
                                            £5.65
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                                          • Trek Madone Slr Standard Cockpit Adapter Cover Spares & AccessoriesTrek Boone External IsoSpeed Cover Black Seat tube | Swinnerton Cycles

                                              Trek Boone External IsoSpeed Seat Tube Cover Black for 2014-2018 Models

                                              Enhance your Trek Boone with the External IsoSpeed Cover for a sleek, protective fit on the seat tube. Designed specifically for 2014-2018 Boone models, this cover safeguards your frame while maintaining its performance. Crafted to blend seamlessly with your bike's design, it offers durability...
                                              £5.65
                                              £5.99
                                              £5.65
                                              Save £0.34
                                            • Trek 2021-2023 Powerfly Fs Paint Match Upper Rocker Links Spares & AccessoriesTrek 2021-2023 Powerfly Fs Paint Match Upper Rocker Links Spares & Accessories

                                                Trek 2021 Powerfly 29 Battery Cover Frame Spare for Bosch 625W & 500W Batteries - Solid Charcoal-Slate

                                                Protect your Trek 2021 Powerfly 29 battery with this durable cover, designed for integrated battery systems. Compatible with 625 W Bosch RIB and 500 W batteries with spacer, it ensures secure fitting and longevity. What It’s Good For Shielding the battery from dirt and...
                                                from £114.00
                                                £130.00
                                                from £114.00
                                                Save £16.00
                                                • Lithium Grey-Trek Black
                                                • Metallic Gunmetal-Trek Black
                                                • Solid Charcoal-Slate
                                                • Crystal White-Polished Silver
                                              • Trek Rail 29 2021 bicycle battery cover frame spare for Bosch 625W and 500W e-bike components, black plastic replacement part.Trek Rail 29 2021 bike battery cover frame for Bosch 625W and 500W e-bike components, shown on a spare component.

                                                  Trek Rail 29 2021 Battery Cover Frame Spare for Bosch 625W & 500W Bikes - Purple Flip-Trek Black

                                                  Protect your Trek Rail 29 battery with this genuine 2021 frame spare cover. Designed for removable integrated battery systems, it ensures a secure fit. Compatible with 625 W Bosch RIB batteries and 500 W batteries with a spacer, this cover helps maintain your e-bike’s...
                                                  £132.29
                                                  £139.99
                                                  £132.29
                                                  Save £7.70
                                                  • Miami Green-Nautical Navy
                                                  • Purple Flip-Trek Black
                                                  • Factory Orange-Lithium Grey
                                                  • Brown
                                                • Trek 2021 Slash 29 Main Pivot Bearing Spacer Spares & AccessoriesTrek 2021 Slash 29 Main Pivot Bearing Spacer Spares & Accessories

                                                  Trek Frame Spares ABP Convert Pivot Washer for Full-Suspension Bikes Maintenance - Black

                                                  Upgrade your bike’s performance with the Trek Frame Spares ABP Convert Pivot Washer. Designed for full-suspension frames, this component ensures smooth and reliable pivot function. Crafted by Trek, it offers durability and precise fitment, making maintenance and repairs straightforward. Keep your suspension working at...
                                                  from £3.77
                                                  £3.99
                                                  from £3.77
                                                  Save £0.22
                                                  • Black
                                                • Trek 2015 Session main pivot oval nut M16 x 6mm black, bike frame fastener component with secure threading and durable finish.Trek 2015 Session main pivot oval nut M16 x 6mm black for secure mountain bike frame fastening.

                                                    Trek 2015 Session Main Pivot Oval Nut M16 x 6mm Black – Secure Frame Fastener

                                                    Upgrade your Trek Session with this durable Oval Nut. Designed specifically for the 2015 model, it ensures a secure and precise fit. Crafted for longevity, it helps maintain frame integrity and performance. Easy to install and made from high-quality materials, this nut is essential...
                                                    £3.77
                                                    £3.99
                                                    £3.77
                                                    Save £0.22
                                                  • Silver FSA 1-1/8 inch upper headset bearing for Trek bikes, ensuring smooth steering and durable bike control.Silver FSA 1-1/8 inch upper headset bearing for Trek bike components, ensuring smooth steering and durable bike control.

                                                      FSA 1-1/8˝ Upper Headset Bearing Silver for Smooth Steering & Durable Bike Control

                                                      Upgrade your bike’s performance with the FSA 1-1/8˝ Upper Headset Bearing in sleek silver. Designed for durability and smooth steering, this component ensures a precise fit for your frame. Crafted to enhance control and reduce friction, it’s an essential part for maintaining your bike’s...
                                                      £12.28
                                                      £12.99
                                                      £12.28
                                                      Save £0.71
                                                    Recently Viewed Products

                                                    Trek bikes are biking models that deliver exceptional performance, comfort and durability time and time again. Here at Swinnerton Cycles, we have a selection of Trek bikes for you to explore depending on the type of cycling adventure you want to venture on. Explore Trek e-bikes, MTB by Trek and for those who want to rack up miles on the road, we have a selection of road bikes by Trek.
                                                    Trek bikes offer speed, comfort and durability

                                                    Over four decades, Trek has meticulously perfected the technical expertise needed to deliver bikes of the highest quality. Within the range of Trek bikes available here at Swinnerton Cycles, you will find premium carbon crafted models that are lightweight for speed but are durable and designed to give you a ride that is controlled. 
                                                    Trek bicycles for any terrain 
                                                    No matter what type of terrain you like to ride on, you will find a bike within the range of Trek bikes to suit your needs. If you would like to explore the range of biking accessories to enhance your cycling experience, we have a wide range of items for you to choose from including bottle cages to hold your drinks cup to first aid kits for any accidents that may occur.

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