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 M10x1mm full suspension rocker pivot bolt, a replacement component for Trek bike suspension systems.Trek M10x1mm full suspension rocker pivot bolt replacement, close-up of the metal component for bike suspension system.

    Trek M10X1Mm Full Suspension Rocker Pivot Bolt Replacement & Spares Accessory - Black, Blue

    Upgrade your Trek bike with the M10X1Mm Full Suspension Rocker Pivot Bolt. Designed for durability and precision, this bolt ensures a secure fit and smooth suspension performance. Made to match original Trek specifications, it’s the perfect replacement part to maintain your bike’s reliability and...
    £9.44
    £9.99
    £9.44
    Save £0.55
    • Black, Blue
    • Blue, Black
  • Trek M4 x 13mm black water bottle cage mount nutsert plug, used as a thread protector for unused bottle cage mounts.Trek black M4 x 13mm water bottle cage nutsert plug, thread protector for unused bottle cage mounts, accessory for bikes

      Trek Water Bottle Nutsert Plug M4 x 13mm Black – Thread Protector for Unused Bottle Cage Mounts

      The Trek Water Bottle Nutsert Plug M4 x 13mm is a genuine Trek spare part that fills and protects unused bottle cage mounting threads on Trek frames. Trek frames typically include multiple bottle cage mount positions — on the down tube, seat tube, and...
      £0.94
      £0.99
      £0.94
      Save £0.05
    • Trek Marlin 4 Gen 3 mountain bike with adaptive frame for trail riding, featuring a black and red frame, knobby tires, and suspension.Trek Marlin 4 Gen 3 mountain bike with adaptive frame, black and orange design, suited for trail riding and off-road adventures.

      Trek Marlin 4 Gen 3 Mountain Bike with Adaptive Frame for Trail Riding - Blue Sage

      The Trek Marlin 4 Gen 3 Mountain Bike with Adaptive Frame is engineered to provide reliable and consistent performance across a variety of mountain trails. Its innovative frame geometry is tailored to accommodate riders of different sizes, featuring a curved top tube on smaller...
      £503.01
      £525.00
      £503.01
      Save £21.99
      • Blue Sage
      • Matte Dark Web
      • Purple Flip/Black Fade
    • Trek Marlin 5 Gen 3 mountain bike with a black frame, front suspension, knobby tires, and a comfortable saddle for trail riding.Trek Marlin 5 Gen 3 mountain bike in black and red, featuring front suspension, knobby tires, and a sturdy frame for trail riding.

      Trek Marlin 5 Gen 3 Mountain Bike – Versatile Trail and Commuter MTB - Miami Green/Dark Aquatic Fade

      The Trek Marlin 5 Gen 3 stands out as a versatile mountain bike engineered to meet the demands of both trail enthusiasts and daily commuters. Its frame geometry is meticulously designed to accommodate a wide range of rider sizes, featuring a curved top tube...
      £594.80
      £625.00
      £594.80
      Save £30.20
      • Fury Red
      • Miami Green/Dark Aquatic Fade
      • Mulsanne Blue
    • Trek black disc brake bike seatstay fender adapter kit, accessory for road bikes, includes mounting components.Trek black disc brake bike seatstay fender adapter kit, one size, designed for road bikes with disc brakes, accessories for bike protection.

        Trek Road Disc Seatstay Fender Adapter Kit Black for Disc Brake Bikes One Size

        Upgrade your bike with the Trek Road Disc Seatstay Fender Adapter Kit. This sleek black adapter ensures secure attachment of mudguards, enhancing your ride in wet conditions. Designed for durability and compatibility, it seamlessly fits your Trek road bike's disc brake setup. Keep your...
        £8.49
        £8.99
        £8.49
        Save £0.50
      • Trek Alex MD35 Boost 141 27.5˝ MTB Wheel Black Rear Shimano HG 8/9/10-speed | Swinnerton Cycles

          Trek Alex MD35 Boost 141 27.5" MTB Rear Wheel Shimano HG 8/9/10-Speed Black

          The Trek Alex MD35 Boost 141 27.5˝ MTB Wheel in black is engineered to elevate your mountain biking experience with a perfect blend of durability and performance. Designed specifically for rear wheel use, it is compatible with Shimano HG 8/9/10-speed drivetrains, ensuring smooth and...
          £89.76
          £94.99
          £89.76
          Save £5.23
        • Trek Domane Mkiv Seatposts SeatpostTrek Domane Mkiv Seatposts Seatpost

          Trek Domane MkIV Seatpost – Durable, Comfortable Bike Seatpost for Trek Domane Frames - Carbon Smoke

          Upgrade your ride with the Trek Domane Mkiv Seatpost, designed for stability and comfort. Its sleek finish complements your bike’s look while ensuring durability. Engineered for precise fit and reliable performance, this seatpost supports your posture for longer rides without compromising on weight. What...
          £207.89
          £219.99
          £207.89
          Save £12.10
          • Carbon Smoke
        • 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
        • Trek Double Gel Cork Handlebar Tape Set with shock-absorbing cushioning for comfortable bike grip on components.Trek Double Gel Cork Handlebar Tape set with shock-absorbing cushioning, designed for comfortable bike handlebar grip.

            Trek Double Gel Cork Handlebar Tape Set – Comfortable Shock-Absorbing Bar Tape - Black

            The Trek Double Gel Cork Handlebar Tape Set is designed to elevate your cycling comfort and control. Combining premium cork with gel padding, this tape absorbs shocks effectively, reducing hand fatigue on long rides. Its ergonomic profile offers a secure grip, enhancing steering precision...
            £15.39
            £18.99
            £15.39
            Save £3.60
            • Black
            • White
          • Trek Rocker Pivot Bolts M12 x 21mm black for full suspension bike components, featuring durable hardware for bike suspension systems.Black Trek Rocker Pivot Bolts M12 x 21mm for full suspension bike components, shown installed on bike hardware.

              Trek Rocker Pivot Bolts M12 x 21mm Black – Full Suspension Bike Hardware

              Upgrade your Trek or Fisher full-suspension bike with these M12 x 21mm rocker pivot bolts in sleek black. Designed for durability and precise fit, they ensure smooth suspension performance. Crafted as essential components, these bolts are perfect for maintaining and enhancing your bike’s frame...
              £10.38
              £10.99
              £10.38
              Save £0.61
            • Trek Diamant Villiger curved black rear bike rack support, 300mm length, bicycle accessories for luggage rack stability.Black Trek Diamant Villiger curved rear bike rack support, 300mm, for bike rack accessories with sturdy construction.

                Trek Diamant Villiger Curved Rack Stays 300mm Black Rear Bike Rack Support

                Upgrade your bike's cargo capacity with the Trek Diamant Villiger Curved Rack Stays. These 300mm black steel stays ensure a sturdy and reliable rear rack mount, enhancing your bike's versatility. Designed for durability and sleek aesthetics, they seamlessly fit your bike while supporting luggage...
                £11.32
                £11.99
                £11.32
                Save £0.67
              • Tektro SP-SS20 speed sensor magnet for 160mm centerlock rotor, black bike component accessory for Trek bikes.Black Tektro SP-SS20 speed sensor magnet for 160mm centerlock rotor on Trek bike components, used for cycling speed detection.

                  Tektro SP-SS20 Speed Sensor Magnet for 160mm Centerlock Rotor Black Bike Accessory

                  The Tektro SP-SS20 Speed Sensor Magnet is designed for precise speed monitoring with Centerlock rotors. Compatible with 160 mm rotors, it ensures accurate data collection for enhanced cycling performance. Its sleek black design integrates seamlessly with your bike, offering durability and reliable functionality. Ideal...
                  £11.32
                  £11.99
                  £11.32
                  Save £0.67
                • Trek Tq Hpr Range Extender BatteryTrek Tq Hpr Range Extender Battery

                    TQ HPR Range Extender Battery Black – E-Bike Power Boost Accessory

                    Enhance your e-bike adventures with the TQ HPR Range Extender Battery in sleek black, designed to seamlessly increase your riding distance. This compact and efficient battery adds an extra 160 Wh of power, boosting your range by up to 44%, allowing you to tackle...
                    £491.39
                    £519.99
                    £491.39
                    Save £28.60
                  • Trek Kids 24" Suspension ForksTrek Kids 24˝ Suspension Forks Black 198mm, 45mm | Swinnerton Cycles

                      Trek Kids 24" Suspension Forks Black 198mm Travel for 24in Wheel Bikes

                      Upgrade your child's Trek bike with these 24˝ suspension forks designed for smooth rides and improved control. Built with durability and precision, they fit perfectly on 24 in. wheeled Trek kids' bikes. What It’s Good For Enhances shock absorption for comfortable riding Improves steering...
                      £66.14
                      £69.99
                      £66.14
                      Save £3.85
                    • e*Thirteen e*Spec Bosch chain guide for Trek bike, black color, 55mm chainline, compatible with Trek frames.Trek e*Thirteen e*Spec chainguide for Bosch e-bike with black finish and 55mm chainline, compatible with Trek frames.

                        e*Thirteen e*Spec Chainguide for Bosch Black 55mm Chainline Trek Frame Compatible

                        The e*Thirteen e*Spec Chainguide for 55mm Chainline is a meticulously crafted component tailored to elevate the performance of your Bosch Black electric bike system. Designed by Trek, this chainguide delivers exceptional chain retention, significantly minimizing chain drops and enhancing the overall efficiency of your...
                        £28.33
                        £29.99
                        £28.33
                        Save £1.66
                      • Trek Farley front cargo rack mounted on a bike, durable metal rack for increased carrying capacity and bike accessories.Trek Farley front cargo rack attached to a bike, durable accessory for increased carrying capacity on mountain or fat bikes.

                          Trek Farley Front Cargo Rack – Durable Bike Rack for Increased Carrying Capacity - Lava

                          The Trek Racks - Farley Front Cargo Rack is the perfect solution for cyclists looking to increase their bike’s carrying capacity without sacrificing balance or control. Crafted by Trek, a respected leader in cycling accessories, this front cargo rack is designed to endure tough...
                          from £80.32
                          £84.99
                          from £80.32
                          Save £4.67
                          • Lava
                          • Black
                        • Black Trek Powerfly HT motor armor made of recycled plastic, protective cover for e-bike components, dark grey accents visible.Trek Powerfly HT motor armor protective cover in black and dark grey, made from recycled plastic, for e-bike components.

                            Trek Powerfly HT Motor Armor Recycled Plastic Protective Cover Black/Dark Grey

                            Protect your Trek Powerfly 2022 motor with durable recycled plastic armor. Designed for a sleek fit in black and dark grey, it shields vital components from damage. What It’s Good For Safeguards motor from impacts and debris Made from eco-friendly recycled plastic Enhances the...
                            £9.44
                            £9.99
                            £9.44
                            Save £0.55
                          • Trek KnockBlock headset lockring spacer in black for Knock Block system mountain bike components.Trek KnockBlock headset lockring spacer in black, designed for Knock Block system mountain bike components.

                              Trek KnockBlock Headset Lockring Spacer Black for Knock Block Systems

                              The Trek KnockBlock Headset Lockring Spacer in black ensures a secure fit between the steer tube, headset bearing cover, and frame. Designed exclusively for Trek Knock Block systems, this component offers reliable stability and protection for your bike's steering mechanism. What It’s Good For...
                              £18.89
                              £19.99
                              £18.89
                              Save £1.10
                            • Trek matte black rear bike rack for 700c wheels, lightweight bike carrier accessory mounted on a bicycle.Trek rear bike rack for 700c wheels, matte black lightweight bike carrier mounted on a bicycle.

                                Trek Rear Rack for 700c Wheels Matte Black Lightweight Bike Carrier

                                Upgrade your bike with the Trek Lightweight Rear Rack, designed for 700c wheels. Its matte black finish combines durability with sleek style, perfect for daily commutes or weekend rides. Crafted to be lightweight yet strong, this rack supports your luggage effortlessly without adding bulk....
                                £12.99
                                £29.99
                                £12.99
                                Save £17.00
                              • Trek Rail 29 2020 main pivot hardware kit in black, suspension replacement components for Trek mountain bike suspension system.Trek Rail 29 2020 main pivot hardware kit in black, suspension replacement components for Trek mountain bikes.

                                  Trek Rail 29 2020 Main Pivot Hardware Kit Black – Suspension Replacement Parts

                                  Upgrade your Trek Rail 29 2020 with this durable Main Pivot Hardware Kit. Designed for precise fit and long-lasting performance, it ensures smooth suspension movement and reliable ride quality. What It’s Good For Maintaining optimal suspension function on Trek Rail 29 2020 Replacing worn...
                                  £51.97
                                  £54.99
                                  £51.97
                                  Save £3.02
                                • Black Trek Bontrager headset top cap for bike components, showcasing a durable, sleek design suitable for Trek mountain or road bikes.Black Trek Standard Headset Top Cap for bike components, durable Bontrager accessory with a sleek finish.

                                    Trek Standard Headset Top Cap Black – Durable Bontrager Bike Accessory

                                    Enhance your bike's steering with the Trek Standard Headset Top Cap in sleek black. Designed for durability and precise fit, it ensures smooth handling on every ride. Crafted by Trek, this top cap complements your headset perfectly, providing reliable performance and easy installation. What...
                                    £4.71
                                    £4.99
                                    £4.71
                                    Save £0.28
                                  • Trek Aero RSL Barstem Bearing Top Cover in Onyx Carbon for bike headtube, component accessory for enhanced performance.Trek Aero RSL barstem bearing top cover in Onyx Carbon, designed for headtube compatibility on bicycle components.

                                      Trek Aero RSL Barstem Bearing Top Cover Onyx Carbon Headtube Accessory

                                      The Trek Aero RSL Barstem Bearing Top Cover in Onyx Carbon is a meticulously crafted upgrade for your bike's steering system. Made from premium carbon material, it combines durability with a lightweight design, ensuring that your ride remains agile without compromising on strength. The...
                                      £5.65
                                      £5.99
                                      £5.65
                                      Save £0.34
                                    • Trek Kids bike grips for twist shifters, durable and secure handlebar grips set for children's bicycles.Trek Kids bike grips for twist shifters, durable and secure handlebar grips set for children's bicycles.

                                        Trek Kids Bike Grips for Twist Shifters – Durable, Secure Handlebar Grips Set - Alpine Blue

                                        These Trek Kids Grips are designed specifically for children's bikes with twist shifters. They offer a comfortable and secure hold for little hands, enhancing control and safety during rides. Made by Trek, these grips provide reliable steering performance and durability, ensuring long-lasting use on...
                                        from £8.49
                                        £8.99
                                        from £8.49
                                        Save £0.50
                                        • Alpine Blue
                                        • Volt
                                        • Magenta
                                        • Trek Black
                                      • Trek Panniers & Bags - Range Extender Retention Strap Kit V2Trek Range Extender Retention Strap Kit V2 Black One size | Swinnerton Cycles

                                          Trek Range Extender Retention Strap Kit V2 Black – Secure Bike Luggage Accessory

                                          The Trek Range Extender Retention Strap Kit V2 in black is a must-have accessory for cyclists who prioritize security and stability when carrying luggage on their rides. Designed with durability at its core, this retention strap kit keeps your panniers and bags securely fastened,...
                                          £12.28
                                          £12.99
                                          £12.28
                                          Save £0.71
                                        • Trek 2023 Farley rear bikepacking harness system in black with 10L capacity, secure storage gear for bike accessoriesTrek 2023 Farley rear bikepacking harness system in black with 10L capacity, designed for secure storage on mountain bikes

                                            Trek 2023 Farley Rear Bikepacking Harness System Black 10L – Secure Storage Gear

                                            The Trek 2023 Farley Rear Bikepacking Harness System in Black offers a perfect blend of durability, functionality, and style for your cycling adventures. Designed by Trek, a leader in cycling innovation, this harness system provides a secure and stable platform to carry your essential...
                                            £26.99
                                            £54.99
                                            £26.99
                                            Save £28.00
                                          • Trek Marlin 6 Gen 3 mountain bike with a black frame, knobby tires, and suspension fork suitable for trail and urban cycling.Trek Marlin 6 Gen 3 mountain bike with 26-inch wheels, black frame, and front suspension for trail and urban cycling.

                                            Trek Marlin 6 Gen 3 Mountain Bike – Versatile Trail and Urban Cycling Bike - Gloss Lavender Haze

                                            The Trek Marlin 6 Gen 3 Mountain Bike represents a refined balance between versatility and performance, crafted to accommodate a wide range of cycling activities. Its innovative frame geometry is tailored to rider height, featuring a curved top tube on smaller sizes for enhanced...
                                            £801.35
                                            £850.00
                                            £801.35
                                            Save £48.65
                                            • Gloss Lavender Haze
                                            • Lava
                                            • Matte Lichen/Keswick Green Fade
                                          • Trek Duroc 50 Boost MTB wheels with tubeless-ready alloy rims, designed for mountain biking components.Trek Sun Rims Duroc 50 Boost MTB wheels with tubeless-ready alloy rims, designed for mountain biking components.

                                            Trek Sun Rims Duroc 50 Boost MTB Wheels Tubeless Ready Alloy Rims - Black-Silver

                                            Upgrade your mountain bike with the Trek Sun Rims Duroc 50 Wheels, designed for durability and performance. Featuring a Boost 15x110 mm front and Boost 12x148 mm rear setup, these wheels ensure a stable and responsive ride. The 50 mm outer width alloy rim...
                                            from £113.38
                                            £119.99
                                            from £113.38
                                            Save £6.61
                                            • Black-Silver
                                          • Trek Diamant Wheel Top DCRX1 MTB double crankset with 170mm arm length, 30x46t chainrings, black color, bike componentTrek Diamant Wheel Top DCRX1 MTB double crankset in black, 170mm arm length with 30x46t chainrings for mountain biking.

                                              Trek-Diamant Wheel Top DCRX1 MTB Double Crankset 170mm 30x46t Black

                                              The Trek-Diamant Wheel Top DCRX1 double crankset combines durability and precision for MTB riders. With 170mm crank arms and a 30x46t gear ratio, it delivers smooth shifting and efficient power transfer. Its robust black finish and integrated guard protect the chainrings, ensuring reliable performance...
                                              £18.89
                                              £19.99
                                              £18.89
                                              Save £1.10
                                            • Trek 1-1/8 inch 45-degree sealed headset in black with 28.6mm steerer tube for bicycle componentsTrek 1-1/8 inch black sealed headset for bikes with 45-degree angle and 28.6mm steerer tube, bike component close-up image

                                                Trek 1-1/8" 45-Degree Sealed Headset Black 28.6mm Steerer Tube Bike Part

                                                The Trek 1-1/8˝ 45-Degree Sealed Headset in black is engineered to deliver exceptional steering precision and durability for your bicycle. Designed to fit a 28.6 mm (1-1/8") steerer tube, this high-quality component ensures smooth rotation and improved handling through its sealed bearing system. The...
                                                £11.32
                                                £11.99
                                                £11.32
                                                Save £0.67
                                              • Trek 2022 Session 29 Rocker Pivot Bolt Spares & AccessoriesTrek 2021 Powerfly FS Main Pivot Hardware Kit Black Main Pivot Hardware Kit | Swinnerton Cycles

                                                  Trek 2021 Powerfly FS Main Pivot Hardware Kit Black – Suspension Replacement Parts

                                                  The Trek 2021 Powerfly FS Main Pivot Hardware Kit in black ensures secure and reliable suspension performance. Designed specifically for Trek frames, this kit offers durable spares to maintain your bike’s smooth handling. Crafted for precise fit and longevity, it supports the main pivot's...
                                                  £42.51
                                                  £44.99
                                                  £42.51
                                                  Save £2.48
                                                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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