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 Aero RSL barstem top cover replacement showing black component with textured surface for bike handlebar stem.Trek Aero RSL barstem top cover replacement showing black aerodynamic component on a bicycle handlebar stem.

      Trek Aero RSL Barstem Top Cover Replacement - Spares & Accessories - Onyx Carbon

      The Trek Spares & Accessories Aero RSL Barstem Top Cover is a meticulously crafted component designed to elevate both the performance and look of your bicycle’s handlebar system. Made from premium materials, this top cover guarantees a secure fit and exceptional durability, protecting your...
      £5.65
      £5.99
      £5.65
      Save £0.34
      • Onyx Carbon
    • Trek Powerfly+ mudguard set for 27.5-inch wheels, black front and rear bike accessories for mountain or e-bike protection.

        Trek Powerfly+ Mudguard Set for 27.5" Wheels Front & Rear Black

        The Trek Powerfly+ Mudguard Set in Black is the perfect accessory for riders using 27.5" wheels who want to keep their bike and themselves clean during all kinds of rides. Designed specifically for the Powerfly+ model, this front and rear mudguard set fits seamlessly,...
        £32.40
        £39.99
        £32.40
        Save £7.59
      • Trek 2023 Madone Gen 7 bike barstem top covers, black plastic components for bike spares and accessories.Trek 2023 Madone Gen 7 barstem top covers, bike components, close-up of black rubber covers on bike handlebars.

          Trek 2023 Madone Gen 7 Barstem Top Covers – Bike Spares & Accessories - Onyx Carbon

          Upgrade your Trek Madone Gen 7 with these sleek Barstem Top Covers. Designed for a flush fit, they enhance the bike’s steering aesthetics and protect key components from wear and tear. Crafted specifically for the 2023 Madone Gen 7, these covers ensure seamless integration...
          £7.55
          £7.99
          £7.55
          Save £0.44
          • Onyx Carbon
        • Trek kids' 152mm MTB crankset with 28-tooth chainring and guard, designed for children's mountain bike components.Trek Kids' 152mm MTB crankset with 28-tooth chainring and guard, bicycle components for young mountain bikers

            Trek Kids' 152mm Crankset with 28t Chainring and Guard for MTB Bikes - Black

            Upgrade your kid's bike with the Trek Kids' Crankset in sleek black. Designed for durability and smooth performance, this 152mm crankset features a 28t chainring with a protective guard, perfect for young riders. Engineered for MTB transmission, it ensures reliable power transfer and a...
            £18.89
            £19.99
            £18.89
            Save £1.10
            • Black
          • Trek Aero RSL integrated road handlebar stem for aerodynamic cycling performance, with sleek carbon fiber design and streamlined shape.Trek Aero RSL integrated road handlebar stem for aerodynamic cycling, showcasing sleek design and carbon fiber construction

            Trek Aero RSL Integrated Road Handlebar Stem for Aerodynamic Cycling Performance - Deep Smoke

            The Trek Aero RSL Road Integrated Handlebar/Stem is expertly engineered to elevate your road cycling experience. Combining handlebar and stem into one sleek, aerodynamic unit, it reduces drag and enhances control, making it a perfect upgrade for riders aiming to improve speed and handling....
            £485.98
            £599.99
            £485.98
            Save £114.01
            • Deep Smoke
          • Trek Powerfly+ 4 Gen 5 mountain bike with 800Wh removable RIB 2.0 battery, black frame, and rugged mountain tires.Trek Powerfly+ 4 Gen 5 mountain bike with 800Wh removable RIB 2.0 battery, black frame and mountain tires.

            Trek Powerfly+ 4 Gen 5 Mountain Bike with 800 Wh Removable RIB 2.0 Battery - Gloss Dark Star/Matte Dark Web

            The Trek Powerfly+ 4 Gen 5 Mountain Bike is engineered to deliver exceptional performance on demanding trails, integrating the advanced RIB 2.0 removable 800 Wh battery for seamless charging and enhanced mobility. This innovative battery system, equipped with a secure secondary safety catch, guarantees...
            £2,916.91
            £3,150.00
            £2,916.91
            Save £233.09
            • Gloss Dark Star/Matte Dark Web
          • Trek Wheel Front Trek Alex Md35/Dc611 27.5 32H 110Mm Black WheelTrek Alex MD35 Boost 27.5˝ MTB Wheel Black/Dark Grey Front No cassette | Swinnerton Cycles

              Trek Alex MD35 Boost 27.5" MTB Front Wheel Black/Dark Grey No Cassette

              Upgrade your mountain bike with the Trek Alex MD35 Boost 27.5˝ Front Wheel, designed for durability and performance. Featuring a double-walled, pinned rim built specifically for disc brakes, it offers reliable strength and stability on rugged trails. This front wheel fits 15X110 mm Boost...
              £89.76
              £94.99
              £89.76
              Save £5.23
            • Trek Round J-Bend Spoke Box Of 10 SpokesTrek Round J-Bend Spoke Box Of 10 Spokes

              Trek Round J-Bend Spokes Pack of 10 for Bontrager System Wheels Replacement - Black

              Upgrade your wheel durability with Trek Round J-Bend spokes, crafted for reliable performance. These spokes ensure sturdy, long-lasting wheel builds. Sold in convenient packs of 10, they are perfect for replacing or building wheels with confidence and precision. What It’s Good For Reinforcing wheel...
              £13.22
              £13.99
              £13.22
              Save £0.77
              • Black
              • Silver
            • Trek ABP Hard Tail rear thru axle in black, 174mm length, bike component for converting rear axle on mountain bikes.Trek ABP hard tail rear thru axle in black, 174mm length, bike component for rear wheel attachment on mountain bikes.

                Trek ABP Hard Tail Rear Thru Axle 174mm Black Convert Rear Axle for Bikes

                The Trek ABP Hard Tail Convert Rear Thru Axle offers a secure 174mm rear fitment for your bike. Its black finish complements your ride while enhancing stiffness and control. Designed for durability and performance, this component ensures seamless wheel attachment and improved handling on...
                £18.89
                £19.99
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              • Trek Formula QR-22 external cam skewers for 5/135/152 mm rear bike hubs, quick-release cycling components.Trek Formula QR-22 external cam skewers for 5/135/152 mm rear bike hubs with quick release mechanism.

                Trek Formula QR-22 External Cam Skewers for 5/135/152 mm Rear Hubs Quick Release - Black

                The Trek Formula QR-22 External Cam Skewers offer reliable wheel attachment with quick-release convenience. Designed for 5/135/152 mm rear hubs, these skewers provide secure and easy wheel changes. Crafted with durable materials, they ensure stability and performance on every ride, making them a perfect...
                £6.61
                £6.99
                £6.61
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                • Black
              • Trek black rear thru-skew 175mm axle for secure bike wheel attachment, showing the sturdy metal component for bicycle components.Trek black rear thru-skew 175mm axle for secure bike wheel attachment, component image showing the axle and threading.

                  Trek Black Rear Thru-Skew 175mm Axle for Secure Bike Wheel Attachment

                  The Trek Thru-Skew Black Rear 175mm offers a secure and reliable connection for your bike's rear wheel. Designed for durability, it ensures consistent performance on every ride. Its sleek black finish complements your bike’s aesthetics while providing easy installation and removal. Perfect for riders...
                  £11.32
                  £11.99
                  £11.32
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                • Trek Skewer Trek - Black - 135*5Mm SkewerTrek Skewer Trek - Black - 135*5Mm Skewer

                    Trek Rear Thru-Skew 169mm Black - Secure Rear Wheel Axle Skewer

                    The Trek Thru-Skew Black Rear 169mm offers secure wheel attachment for enhanced stability. Its durable design ensures reliable performance on every ride. What It’s Good For Strong and secure rear wheel fastening Compatible with various Trek wheelsets Durable black finish for long-lasting use What...
                    £11.32
                    £11.99
                    £11.32
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                  • Trek Hub Part Trek Approved Dc-27-7 7-Speed Rr. Hub Rebuild Kit Hub PartBontrager Approved Loose Ball 6-Bolt Axle Kit Silver 135mm OLD FT/RR | Swinnerton Cycles

                      Bontrager 6-Bolt Loose Ball Axle Kit Silver 135mm OLD Rear Hub Replacement

                      The Bontrager Approved Loose Ball 6-Bolt Axle Kit ensures smooth wheel rotation with reliable 135mm OLD fitment. Crafted for durability and precision, this silver axle kit is ideal for maintaining your bike's performance. What It’s Good For Replacing worn or damaged rear axle components...
                      £18.89
                      £19.99
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                    • Silver and black Trek Bontrager front 6-bolt hub axle kit with 100mm OLD and loose ball bearings, component for bicycle wheels.Trek Bontrager front 6-bolt hub axle kit with 100mm old, loose ball bearings, silver and black, for bicycle wheel components.

                        Bontrager Front 6-Bolt Hub Axle Kit 100mm OLD Loose Ball Silver/Black

                        Upgrade your bike with the Bontrager Approved Loose Ball Front 6-Bolt Hub Axle Kit, designed for 100mm OLD front and rear hubs. This kit ensures smooth wheel rotation and reliable performance. Crafted with precision, it offers durability and easy maintenance for your Trek components....
                        £18.89
                        £19.99
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                        Save £1.10
                      • Trek Aero RSL barstem headset spacers for precise bike steering adjustment, shown on a bicycle component.Trek Aero RSL barstem headset spacers for precise bike steering adjustment, shown installed on a bicycle handlebar.

                        Trek Aero RSL Barstem Headset Spacers for Precise Bike Steering Adjustment - Onyx Carbon

                        The Trek Aero RSL Barstem Headset Spacers are precision-engineered components that elevate your bike’s steering performance. Designed specifically for Trek Aero RSL barstems, these spacers offer seamless compatibility and allow fine-tuning of handlebar height and positioning. Their robust construction ensures durability and long-lasting reliability,...
                        from £3.77
                        £3.99
                        from £3.77
                        Save £0.22
                        • Onyx Carbon
                      • Trek SRAM TwistLoc Ultimate dual remote lockout set with spares and accessories for mountain bike suspension components.Trek Sram Twistloc Ultimate dual remote lockout set with spare parts and accessories for bike suspension components.

                          Trek Sram Twistloc Ultimate Dual Remote Lockout Set with Spares & Accessories

                          The Trek Sram Twistloc Ultimate Dual Remote Lockout Set Spares & Accessories is a premium component designed to elevate your mountain biking experience. Crafted by Trek, a leader in cycling innovation, this dual remote lockout system allows precise control over both fork and rear...
                          £51.97
                          £54.99
                          £51.97
                          Save £3.02
                        • Trek Kids' 20"" Suspension ForksTrek Kids 20˝ Suspension Forks Black 199mm, 35mm | Swinnerton Cycles

                            Trek Kids 20" Suspension Forks Black 199mm Travel 35mm for Mountain Bikes

                            Upgrade your child's ride with Trek Kids 20˝ Suspension Forks in black. Designed for 20-inch wheels, these forks provide smooth steering and enhanced control on mountain trails. Built with durability and performance in mind, they ensure a comfortable ride for young cyclists. The 199mm...
                            £66.14
                            £69.99
                            £66.14
                            Save £3.85
                          • Trek Madone SLR Gen 7 Onyx Carbon integrated barstem bearing top cap, dark grey, for high-performance road bike components.Trek Madone SLR Gen 7 Onyx Carbon integrated barstem bearing top cap on a dark grey bicycle component

                              Trek 2023 Madone SLR Gen 7 Integrated Barstem Bearing Top Cap Onyx Carbon Dark Grey

                              The Trek 2023 Madone SLR Gen 7 Integrated Barstem Bearing Top Cap in Onyx Carbon/Dark Grey is a finely crafted component designed to elevate your Madone SLR Gen 7 frame’s performance. Engineered with precision, it integrates flawlessly with the frame’s headtube, ensuring impeccable alignment...
                              £6.61
                              £6.99
                              £6.61
                              Save £0.38
                            • Trek 2021 Fuel Ex 29 Carbon Chainstay Spares & AccessoriesTrek M10x1 Suspension Nut Insert Black M10 x 7.5mm | Swinnerton Cycles

                                Trek M10x1 Suspension Nut Insert Black M10 x 7.5mm for Bike Suspension Maintenance

                                The Trek M10x1 Suspension Nut Insert in black is designed for reliable performance and durability. Its precise fit ensures secure assembly in your suspension system. Crafted from quality materials, this component enhances the longevity of your bike’s suspension. Ideal for maintenance and upgrades, it...
                                £4.71
                                £4.99
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                              • Trek FSA 1.5-inch silver lower headset bearing with smooth steering and durable performance for bike components.Trek FSA 1.5-inch silver lower headset bearing for smooth steering and durable performance on bicycle components.

                                  FSA 1.5˝ Lower Headset Bearing Silver for Smooth Steering & Durable Performance

                                  Enhance your bike’s performance with the FSA 1.5˝ Lower Headset Bearing in silver. Designed for durability and smooth steering, this component ensures reliable handling on every ride. Crafted to fit perfectly with your frame, it supports precise control and reduces friction, making your cycling...
                                  £13.22
                                  £13.99
                                  £13.22
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                                • Trek 2021 Powerfly Fs Aluminum Chainstay Spares & AccessoriesTrek Madone 5, 6 & 7 Series Aero Frame Parts Kit Black Trek Madone 5/6/7 Aero Frame Hardware | Swinnerton Cycles

                                    Trek Madone 5/6/7 Series Aero Frame Parts Kit Black – Aero Frame Hardware Upgrade

                                    Upgrade your Trek Madone 5, 6 & 7 with this sleek black aero frame parts kit. Designed for seamless integration, it enhances both performance and style. Crafted to fit perfectly, these components ensure durability and aerodynamic efficiency for your bike. What It’s Good For...
                                    £51.97
                                    £54.99
                                    £51.97
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                                  • Trek Domane Mkiv Downtube Storage Covers Spares & AccessoriesMRP MXg Bash Guard & Chain Guide for Trek 2024 Slash Black One size | Swinnerton Cycles

                                      MRP MXg Bash Guard & Chain Guide for Trek 2024 Slash Mountain Bike Black

                                      The MRP MXg Bash Guard & Chain Guide for Trek 2024 Slash in black is a premium component crafted to boost both the durability and performance of your mountain bike. Specifically designed for the Trek 2024 Slash model, this one-size-fits-all accessory ensures reliable chain...
                                      £132.29
                                      £139.99
                                      £132.29
                                      Save £7.70
                                    • Trek Domane+ Headset Cover Spares & AccessoriesTrek 2024 Slash Idler Pulley Concave Washer Black 4mm x 6mm | Swinnerton Cycles

                                        Trek 2024 Slash Idler Pulley Concave Washer Black 4mm x 6mm Replacement Part

                                        The Trek 2024 Slash Idler Pulley Concave Washer in sleek black, measuring 4mm x 6mm, is an essential component designed to optimize the performance of your Trek Slash bike. Crafted with precision and durable materials, this washer plays a crucial role in the idler...
                                        £7.55
                                        £7.99
                                        £7.55
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                                      • Trek Full Suspension 7-Piece Main Pivot Hardware Kit Spares & AccessoriesTrek 2024 Slash Idler Pulley Assembly Spacer Black 4mm x 12mm | Swinnerton Cycles

                                          Trek 2024 Slash Idler Pulley Assembly Spacer 4mm x 12mm Black Bike Part

                                          The Trek 2024 Slash Idler Pulley Assembly Spacer in black, sized 4mm by 12mm, is a precision-crafted component designed to optimize the performance of your Trek Slash frame. Engineered with exacting standards, this spacer ensures accurate alignment and smooth functioning of the idler pulley...
                                          £5.65
                                          £5.99
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                                        • Trek Speed Concept Water Bottle Cage Hardware Spares & AccessoriesTrek 2024 Slash Matched Wheel 29” Lower Shock Mount Brackets Black Trek 2024 Slash Matched Wheel Lower Shock Mount Brackets | Swinnerton Cycles

                                            Trek 2024 Slash Matched Wheel 29” Lower Shock Mount Brackets Black - MTB Parts

                                            The Trek 2024 Slash Matched Wheel 29” Lower Shock Mount Brackets in black are essential components crafted to optimize your mountain biking experience. Engineered with precision and high-quality materials, these brackets ensure a secure and stable connection for the lower shock mount on your...
                                            £33.06
                                            £34.99
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                                          • Trek Domane+ SLR motor covers, durable frame protection components, black plastic parts for Trek road bike frame.Trek Domane+ SLR motor covers, durable frame protection components for Trek bicycle models.

                                            Trek Domane+ SLR Motor Covers – Durable Frame Protection Parts - Juniper

                                            Protect your Trek Domane+ SLR motor with these durable satin Juniper covers. Designed for a perfect fit, they shield essential components from dirt and damage. Enhance your bike’s longevity while maintaining its sleek look. What It’s Good For Protecting motor parts from wear and...
                                            £51.97
                                            £54.99
                                            £51.97
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                                            • Juniper
                                            • Mercury
                                            • Carbon Red Smoke
                                            • Deep Smoke
                                          • Trek Rail 29 Motor Armor in black, a durable frame protection accessory for Trek mountain bikes, shown on a bike frame.Trek 2022 Rail 29 Motor Armor in black, a durable frame protection accessory for mountain bike components.

                                              Trek 2022 Rail 29 Motor Armor Black | Durable Frame Protection Accessory

                                              Protect your Trek Rail 29 with this durable Motor Armor in sleek black. Designed specifically for the 2022 model, it ensures long-lasting frame protection against impacts and debris. Its robust construction complements your bike's performance without adding unnecessary weight. What It’s Good For Shielding...
                                              £23.62
                                              £24.99
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                                            • Trek rear derailleur hanger and thru axle in black for bike components, shown from the rear drive side.Black Trek rear derailleur hanger and thru axle, replacement component for bike drive side, mounted on rear of bicycle.

                                                Trek-Diamant Rear Derailleur Hanger Thru Axle Black Rear Drive Side Replacement

                                                Upgrade your bike with the Trek-Diamant Thru-Skew Rear Derailleur Hanger. This black hanger is designed for rear drive side installation with thru axle compatibility, ensuring a secure and precise fit. Crafted to enhance frame protection and maintain optimal shifting performance, it’s a reliable replacement...
                                                £12.28
                                                £12.99
                                                £12.28
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                                              • Trek 2022 Session 29 idler pulley, black suspension and chain control component, with durable metal construction.Trek 2022 Session 29 black idler pulley for suspension and chain control, component for mountain bike maintenance.

                                                  Trek 2022 Session 29 Idler Pulley for Suspension & Chain Control Black

                                                  The Trek 2022 Session 29 Idler Pulley is designed to enhance your bike's suspension performance. Crafted for durability and precision, it ensures smooth chain movement and reliable tension. Built specifically for the Trek Session 29, this 13-tooth pulley integrates seamlessly with your existing setup,...
                                                  £37.79
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                                                • Trek Full Suspension Heavy Contact Sealed Bearing 10X19X8Mm Spares & AccessoriesTrek 2022 Session 29 Lower Shock Mino Link Bolt Kit Black M8 x 45mm | Swinnerton Cycles

                                                    Trek 2022 Session 29 Lower Shock Mino Link Bolt Kit M8 x 45mm Black

                                                    Upgrade your Trek Session 29 with the 2022 Lower Shock Mino Link Bolt Kit. Designed for secure and reliable mounting, this kit ensures optimal bike performance and durability. Crafted with precision, the black M8 x 45mm bolts offer a perfect fit for your frame,...
                                                    £18.89
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                                                  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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