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 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...
      £0.80
      £0.99
      £0.80
      Save £0.19
    • 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...
        £9.65
        £11.99
        £9.65
        Save £2.34
      • Trek Shimano BB90/BB95 steel bottom bracket kit in grey, for integrated bike frames, one size standard component.Trek integrated Shimano BB90/BB95 steel bottom bracket kit in grey, showing the compact, durable component for bicycle installation.

          Trek Integrated Shimano BB90/BB95 Steel Bottom Bracket Kit Grey One size

          The Trek Integrated Shimano BB90/BB95 Steel Bottom Bracket Kit in Grey is crafted to elevate your bike’s transmission system with unmatched precision and durability. Designed specifically for frames compatible with BB90 and BB95 standards, this bottom bracket kit ensures a flawless fit and consistent...
          £44.27
          £54.99
          £44.27
          Save £10.72
        • Trek eco-friendly left side load recycled water bottle cage for bikes, showcasing durable, lightweight bike accessories.Trek eco-friendly left side load recycled water bottle cage mounted on a bike frame, designed for convenient hydration access.

            Trek Left Side Load Recycled Water Bottle Cage – Eco-Friendly Bike Accessory - Trek Black

            The Trek Cages - Left Side Load Recycled Water Bottle Cage is designed for cyclists who value both functionality and environmental responsibility. Made from recycled materials, this bottle cage offers a durable and eco-friendly solution that fits perfectly on the left side of your...
            £7.59
            £9.57
            £7.59
            Save £1.98
            • White
            • Crimson
            • Olive Grey
            • Trek Black
          • Trek Integrated BB90/95 bearing spacer seal, 7.5mm x 24mm, for bottom bracket components with sealing features.Trek bottom bracket bearing spacer seal, 7.5mm x 24mm, for BB90/95 components, showing the black seal with Trek branding.

              Trek Integrated BB90/95 Bearing Spacer Seal 7.5mm x 24mm for Bottom Bracket

              Enhance your bike’s performance with the Trek Integrated BB90/95 Bearing Spacer Seal. Designed for precision, it ensures smooth rotation and reliable protection for your bottom bracket bearings. Its durable black finish complements your bike’s sleek look while maintaining optimal function. Crafted specifically for Trek’s...
              £1.60
              £1.99
              £1.60
              Save £0.39
            • Trek 5mm headset cable routing spacers for bike components, black plastic, designed for clean cable management on bicycles.Trek bike headset cable routing spacers, 5mm, for smooth cable management and component fitment in bicycle assembly.

              Trek Headset Cable Routing Spacers 5mm – Bike Spares & Accessories - Trek Black

              Enhance your bike's steering precision with Trek Headset Cable Routing Spacers. Designed for seamless integration, these 5mm black spacers ensure a secure fit and smooth cable management. What It’s Good For Improves headset alignment for better control Keeps cables neatly routed and protected Durable...
              from £8.05
              £9.99
              from £8.05
              Save £1.94
              • Trek Black
            • 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...
                £11.26
                £13.99
                £11.26
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              • Trek KnockBlock 58-degree headset assembly in black, compatible with 28.6mm and 38.1mm bike components.Trek KnockBlock 58-degree headset assembly in black with 28.6mm and 38.1mm compatibility, shown on a mountain bike component.

                  Trek KnockBlock 58-Degree Headset Assembly Black 28.6mm / 38.1mm Compatible

                  Upgrade your Trek bike with the KnockBlock 58-degree Headset Assembly, designed for optimal compatibility with Trek KnockBlock models. This assembly includes essential components like crown race, bearings, top cover, frame chip, and fastener, ensuring smooth steering and reliable performance. Please note, KnockBlock headset spacers...
                  £32.20
                  £39.99
                  £32.20
                  Save £7.79
                • Trek matte carbon seat mast cap with 7mm round clamp ears, Onyx carbon finish, 175x20mm component for bike seat postsTrek matte carbon seat mast cap with 7mm round clamp ears, Onyx carbon finish, 175x20mm component for bike seat posts

                    Trek Matte Carbon Seat Mast Cap with 7mm Round Clamp Ears Onyx Carbon 175x20mm

                    The Trek Colour-Matched Matte Carbon Seat Mast Cap & 7 mm Round Ears Onyx Carbon 175mm x 20mm is designed for riders seeking a seamless blend of style and function. Crafted from ultra-light carbon, this mast cap not only reduces weight but also complements...
                    £144.89
                    £179.99
                    £144.89
                    Save £35.10
                  • Trek RCS Pro stem top cap replacement for bike steering components, featuring a sleek black finish and Trek branding.Trek RCS Pro stem top cap replacement for bike steering components, shown in close-up with visible branding and metal finish.

                      Trek RCS Pro Stem Top Cap Replacement Spare & Bike Accessory for Steering

                      Upgrade your bike’s steering with the Trek RCS Pro Stem Top Cap. Designed for durability and precision, this top cap ensures a secure fit and smooth handling. Its sleek black finish complements any setup while providing reliable performance. Perfect for those who want to...
                      £8.05
                      £9.99
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                    • Trek Open Groove Bottom Bracket Cable Guide in black, designed for smooth cable routing on bike components.Trek Open Groove Bottom Bracket Cable Guide in black for smooth routing of gear and brake cables on bicycle components.

                        Trek Open Groove Bottom Bracket Cable Guide for Smooth Cable Routing Black

                        The Trek Open Groove Bottom Bracket Cable Guide ensures smooth cable routing for any Trek frame with an open groove design. Its durable build enhances performance and reliability. Designed specifically for Trek frames, this cable guide simplifies maintenance and improves shifting efficiency, making it...
                        £3.22
                        £3.99
                        £3.22
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                      • Grey Trek pedal trailer hitch kit for bikes with hitch head, compatible with 2004+ models, bike accessories for secure towing.Trek grey pedal trailer hitch kit for bike hitch head, compatible with 2004+ bikes, bike accessories for secure towing.

                          Trek Pedal Trailer Hitch Kit Grey for Hitch Head 2004+ Bikes One Size

                          The Trek Pedal Trailer Hitch Kit in Grey offers a secure, easy way to connect your child trailer to your bike. Designed for Hitch Head 2004+ with a 30mm hitch point width, it ensures a stable ride. Durable and reliable, this accessory perfectly fits...
                          £16.09
                          £19.99
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                        • Trek Bontrager rear freewheel hub axle kit in silver and black, 135mm old, for bike components and wheel assembly.Trek Bontrager rear freewheel hub axle kit in silver and black, 135mm old spacing, for bike components, shown in close-up.

                            Bontrager Rear Freewheel Hub Axle Kit 135mm OLD FT/RR Silver Black Approved

                            Upgrade your bike with the Bontrager Approved Loose Ball Rear Freewheel Hub Axle Kit. Designed for durability and smooth performance, this 135mm OLD FT/RR axle kit ensures reliable hub function and easy maintenance. Crafted by Trek, it fits perfectly within your wheel assembly, enhancing...
                            £16.09
                            £19.99
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                          • Black FSA 41mm IS headset upper cover for Trek bikes, protecting steering components and ensuring a secure fit.Black FSA 41mm IS headset upper cover for Trek bikes, providing steering protection and secure fit.

                              FSA 41mm IS Headset Upper Cover Black – Bike Steering Protection & Fit

                              Enhance your bike’s steering with the FSA 41mm IS Headset Upper Cover. This sleek black cover ensures a secure fit and protects your headset from dirt and damage, maintaining smooth handling on every ride. Designed for durability and easy installation, it’s an essential component...
                              £8.85
                              £10.99
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                            • Trek Kids' mountain bike handlebar grips, comfortable and durable MTB components, with textured rubber for a secure grip.Trek Kids' mountain bike handlebar grips, comfortable and durable components with textured rubber for secure grip and control.

                                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...
                                £7.23
                                £8.99
                                £7.23
                                Save £1.76
                                • Black
                              • 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...
                                  £10.46
                                  £12.99
                                  £10.46
                                  Save £2.53
                                • Trek Speed Concept 6mm Mono Extension Slider for aerodynamic bike component, black color, compatible with high-performance road bikes.Trek Speed Concept 6mm Mono Extension Slider for aerodynamic bike components, black color, used on Trek speed bikes.

                                    Trek Speed Concept 6mm Mono Extension Slider 2026 Black – Aerodynamic Bike Part

                                    The Trek Speed Concept 6mm Mono Slider 2026 enhances your bike's aerodynamics and control. Designed for seamless integration with your frame, it offers precise pivot action for smooth handling. Crafted with durable materials, this 6mm mono extension slider ensures long-lasting performance and easy maintenance....
                                    £10.46
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                                  • Trek 6800V Max Replacement Rear Suspension Bearing Hub PartsTrek 6800V Max Replacement Rear Suspension Bearing Hub Parts | Swinnerton Cycles

                                      Trek 6800V Max Rear Suspension Bearing Hub Replacement Parts for Full Suspension Bikes

                                      Upgrade your bike with Trek 6800V Max Replacement Rear Suspension Bearing Hub Parts for smooth rides. Designed specifically for Trek and Gary Fisher full suspension bikes, these components ensure optimal performance and durability. Maintain your bike's efficiency with reliable spares that fit perfectly. What...
                                      £16.56
                                      £20.00
                                      £16.56
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                                    • Trek 6800 Max rear suspension bearing hub replacement part for full suspension bikes, showing the bearing and hub components.Trek 6800 Max rear suspension bearing hub replacement component for full suspension bikes, shown in the image.

                                        Trek 6800 Max Rear Suspension Bearing Hub Replacement Parts for Full Suspension Bikes

                                        Ensure smooth rides with the Trek 6800 Max Replacement Rear Suspension Bearing Hub Parts. Designed specifically for Trek and Gary Fisher full suspension bikes, these high-quality bearings restore optimal performance. Durable and precision-engineered, they help maintain your bike’s suspension efficiency and extend its lifespan....
                                        £5.80
                                        £7.00
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                                      • Trek Shimano V2 Oversized BB90 bottom bracket bearing in grey, compatible with FSA and SRAM bike components.Trek Shimano V2 Oversized BB90 bottom bracket bearing in grey for FSA and SRAM compatible bike components

                                          Trek Integrated BB90 Shimano V2 Oversized Bottom Bracket Bearing Grey Compatible with FSA SRAM

                                          The Trek Integrated BB90 Shimano V2 Oversized Bottom Bracket Bearing in Grey is designed for precise fitment in BB90 or BB95 shells with slightly oversized bearing bores. Compatible with Shimano drive and non-drive sides, as well as SRAM drive sides, it ensures smooth and...
                                          £24.14
                                          £29.99
                                          £24.14
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                                        • Silver VP Components FP-F501 1-inch threaded bike headset for Trek, compatible with 25.4mm fork, shown on a bike.Silver VP Components FP-F501 1-inch threaded bike headset compatible with Trek bikes and 25.4mm fork, shown on a bike.

                                            VP Components FP-F501 1" Threaded Bike Headset Silver 25.4mm Fork Compatible

                                            Upgrade your bike with the VP Components FP-F501 headset. Its durable 1" threaded design ensures smooth steering and reliable performance. The silver finish adds a sleek touch to your ride. What It’s Good For Provides stable and precise steering control Compatible with 25.4 mm...
                                            £4.02
                                            £4.99
                                            £4.02
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                                          • Trek 2019 Domane SLR6 disc brake fork in matte black and grey, bike component with carbon fiber construction.Trek Domane SLR6 disc brake fork in matte black and grey, bike component replacement for road bike performance.

                                            Trek 2019 Domane SLR6 Disc Brake Forks Replacement Matte Black/Grey - Trek Black, Battleship Blue

                                            Upgrade your Trek Domane SLR6 with these original replacement forks designed for perfect fit and performance. Matte Black/Grey finish ensures seamless style integration. Engineered for precise steering and enhanced road handling, these forks maintain the integrity and feel of your bike, keeping your ride...
                                            £370.30
                                            £459.99
                                            £370.30
                                            Save £89.69
                                            • Trek Black, Battleship Blue
                                          • Black Trek Farley bolt-on front fender for downtube bikes, universal fit, durable bike component for mud and water protection.Black Trek Farley bolt-on front fender for downtube bikes, universal fit, designed to protect against mud and water.

                                              Trek Farley Bolt-On Front Fender Black Universal Fit for Downtube Bikes

                                              Keep your ride clean and dry with the Trek Farley Bolt-on Front Fender. Designed for universal fit, it easily attaches to your downtube, providing reliable protection against mud and water. Crafted with durable materials, this black fender complements your bike’s look while enhancing your...
                                              £16.09
                                              £19.99
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                                            • Trek Madone SLR seatpost hardware kit in black, genuine replacement components for bike seatpost assembly.Black Trek Madone SLR seatpost hardware kit, genuine replacement components for Trek road bike seatpost assembly.

                                                Trek Madone SLR Seatpost Hardware Kit Black Genuine Replacement One Size

                                                Upgrade your Trek Madone SLR with this genuine Seatpost Hardware Kit in sleek black. Designed for perfect fit and durability, it ensures reliable performance. Crafted as original equipment, this kit supports smooth seatpost adjustments and maintains your bike's integrity over time. What It’s Good...
                                                £28.17
                                                £34.99
                                                £28.17
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                                              • Trek Madone SLR headset spacers for precise steering, bike frame spare parts, durable components for Trek road bikes.Trek Madone SLR headset spacers for precise steering, shown with frame spare parts and component details.

                                                Trek Madone SLR Headset Spacers Frame Spare Parts for Precise Steering - Black

                                                Upgrade your Trek Madone SLR with these precise headset spacers. Crafted for a perfect fit, they ensure smooth steering and enhanced control. The sleek black design complements your bike’s aesthetics while providing reliable performance. What It’s Good For Optimizing headset fit and alignment Improving...
                                                from £11.26
                                                £13.99
                                                from £11.26
                                                Save £2.73
                                                • Black
                                              • Dark grey Trek Rocker Pivot Washer, 2.8mm x 10mm, for full-suspension bike components, shown in close-up detail.Trek Rocker Pivot Washer 2.8mm x 10mm in dark grey, used for full-suspension bike components, close-up view.

                                                Trek Rocker Pivot Washer 2.8mm x 10mm Dark Grey for Full-Suspension Bikes - Dark Grey

                                                The Trek Rocker Pivot Washer in Dark Grey is designed for full-suspension frames, ensuring smooth and reliable pivot movement. Crafted with precision at 2.8mm x 10mm, it fits perfectly to maintain your bike's performance. Engineered by Trek, this component provides durability and seamless integration...
                                                £5.63
                                                £6.99
                                                £5.63
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                                                • Dark Grey
                                              • Trek ABP Convert 135mm quick release derailleur hanger in black for rear drive side bicycle component.Black Trek ABP Convert 135mm quick release derailleur hanger for rear drive side bicycle components.

                                                  Trek ABP Convert 135mm Quick Release Derailleur Hanger Black Rear Drive Side

                                                  The Trek ABP Convert 135 mm Quick Release Derailleur Hanger ensures precise rear derailleur alignment. Designed for 135x5 mm hubs, it offers reliable compatibility and durability. Its sturdy construction supports smooth gear shifts and protects your frame from damage during rides. Easy to install...
                                                  £9.65
                                                  £11.99
                                                  £9.65
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                                                • Trek Fastener Fisher Dropout Nut Hardtail Convert 142X12 BlackTrek Fastener Fisher Dropout Nut Hardtail Convert 142X12 Black

                                                    Trek Fastener Fisher Dropout Nut Hardtail Convert 142X12 Black

                                                    £6.99
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                                                    £6.99
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                                                  • Trek Suspension Part Trek Shock Mount Kit 59Mmx10Mm 2020 BlackTrek Suspension Part Trek Shock Mount Kit 59Mmx10Mm 2020 Black

                                                      Trek Suspension Part Trek Shock Mount Kit 59Mmx10Mm 2020 Black

                                                      £34.99
                                                      £34.99
                                                      £34.99
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                                                    • Trek Kit Trek Speed Concept 2014 Frame HardwareTrek Kit Trek Speed Concept 2014 Frame Hardware

                                                        Trek Kit Trek Speed Concept 2014 Frame Hardware

                                                        £19.99
                                                        £19.99
                                                        £19.99
                                                        Save £0.00
                                                      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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