CNC Machined Bicycle Parts

Get custom CNC-machined bicycle parts manufactured to tolerances as tight as ±0.005 mm, using premium-grade alloys for enhanced durability.

With over 10,000 precision components delivered annually, we combine expert care and innovative machining techniques to ensure performance and reliability for every ride.

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    Our CNC Machined Bicycle Parts Capabilities

    At Tops Precision, we produce high-quality bicycle parts using advanced CNC machining. Whether you’re making custom bicycles or upgrading existing ones, we’re here to help you get parts that fit right, last long, and perform well. Our team focuses on getting every detail right and brings a decade of experience, advanced tools, and care to ensure each part meets your exact requirements.

    Here’s what our service includes and sets us apart:

    • ISO 9001:2015 certified CNC machining for OEM bicycle parts;
    • Advanced 3, 4, and 5-axis CNC machines for accurate and complex parts;
    • Supports bikes of all types, from off-road to high-performance models;
    • Machining available for materials like aluminum, stainless steel, steel, titanium, brass, bronze, copper, zinc, ABS, acrylic, PTFE etc.;
    • CNC milling and turning machining with tight tolerances up to ±0.400 mm;
    • Machining for parts up to 90 mm in size;
    • Horizontal milling for parts up to 18 x 22 x 12 inches, and custom designs;
    • Turning for parts with up to 13-inch diameters.

    We make everything from lightweight stems and hubs to custom dropouts and spacers. Every part is made with meticulous care, and we don’t compromise on quality.

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      Why Prototyping and Fast CNC Machining Matters for Bicycle Parts

      In the development of motorcycle and bicycle parts, prototyping and fast production play a major role. CNC machining at Tops Precision converts your CAD drawings into working parts in a short lead time. You get accurate samples, can test fit, and feasibility early, and proceed with confidence.

      Our team assists you in avoiding long hours and reducing lead times, solving design issues in a short period, and eliminating expensive tooling requirements. This comes in particularly handy with custom frames, suspension parts, brackets, or fittings. You do not have to wait weeks; in fact, you receive parts in days. Besides this, the prototyping process is time-saving and keeps your project on schedule when speed, accuracy, and feedback are imperative.

      Why Prototyping Matters in Early Development

      Initial prototypes aid you in verifying fit, functioning, and geometry. It allows you to witness the part functionality before going into full production. When something is wrong in design, it becomes simple to make it right and make several attempts.

      At Tops Precision, we machine your parts directly from your CAD files. You have working samples of the same size and material as the final. No 3D prints or guesses-just real parts for testing. This comes in handy with components such as dropouts, disc mounts, or linkages where the precision up to millimeters counts.

      How Rapid Manufacturing Speeds Up Production

      You do not always have the time to wait until full tooling. Swift CNC manufacturing keeps you on track. It can be used in short runs, a pre-production sample, or an emergency replacement.

      We do not delay low to mid-volume batches. Need 5 stems next week? Or 10 brake mounts to test? We can provide rapid solutions without altering your design. This keeps your timeline flowing and lowers the risk at the time of launch.

      Better Control Over Revisions and Small Changes

      Designs are subject to post-testing. Our quick machining is capable of updating at a rapid pace. You stay in control of the part, the fit, and the finish.

      Tops Precision synchronizes your files and creates the version that follows without slowness. You do not spend much time in back-and-forths or retooling.

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        Excellent CNC-Machined Bicycle Parts We Manufacture

        At Tops Precision, we produce a wide range of precision CNC-machined bicycle parts. Each part is carefully crafted to meet your exact specifications and measurements. We focus on strength, fit, and durability to help your bicycle perform at its best.

        Here are some of the key parts we machine with special attention to detail.

        Bike Stems

        Machine bike stems are machined from aluminum. These are light yet strong. The handlebars are connected to forks, with a precise fit. This help your steering stays responsive. We maintain strict tolerances regarding a perfect fit on various fork steerer sizes.

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          Dropouts

          Our dropouts are optimal for wheel security and their alignment. We use hard-wearing metals and ensure exact dimensions to keep wheels stable, even on rough terrain. They resist bending and wear, and maintain reliable performance over time.

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            Chainrings

            We design the chainrings to precise tooth shapes so that the gear shifts are smooth. Our CNC machining ensures that all the teeth are made the same to minimize chain slip and wear. We combine aluminium and steel to achieve a weight and strength balance.

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              Hubs

              We machine hubs with high precision so they rotate smoothly with minimal play. Our hubs are compatible with different axle standards and feature quality finishes, and avoid corrosion. They are favourable to long rides with steady operation.

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                Brake Caliper Mounts

                At Tops Precision, we make brake mounts that fit your brakes exactly. This improves braking and safety, and avoids rust and high braking force. We use stainless steel and aluminium alloys.

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                  Seat Clamps

                  Our seat clamps grip seat posts and do not damage the frame. We take extra care over the inner diameter and finish to prevent scratching and slipping. So, they provide a conveniently adjustable grip.

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                    Headsets

                    We machine headsets for smooth steering and long-term performance. Precision fits minimise play and noise, and our machine parts fit with other types and sizes of bearings to match the design of your bike.

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                      Pedal Axles

                      Our pedal axles are powerful and uniformly balanced in a bid to minimize vibration. Precise machining contributes to longer bearing life and rider comfort. We employ the standard steel grades to make it strong and durable.

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                        Suspension Linkages

                        We manufacture compound suspension linkages that move freely when under load. Every single joint is cut to tight tolerances. This ensures that your bike takes in shocks and still offers control.

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                          Dropper Post Parts

                          Dropper posts and parts must be compatible with no issues when changing the seat height. We machine these parts to strict measurements to ensure that the post is able to move without any problem and remain in place.

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                            Spacers

                            Our spacers assist you in adjusting handlebar height and position. And we machine them to the perfect thinness with smooth finishes, so that there is never a wobble in the adjustment.

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                              Derailleur Hangers

                              Derailleur hangers ensure your frame is not exposed and allow your gears to flow freely. We produce perfectly fitting and strong hangers that do not bend when they are impacted.

                              Each bicycle part is carefully inspected at Topsbest Precision. We ensure that your parts fit durable and perform well, and last longer. You can rely on us for quality and precision, whether you need one prototype or bulk part production.

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                                How We Use CNC Machining Techniques to Craft Perfect Bicycle Parts

                                At Tops Precision, we use multiple CNC machining techniques to make accurate and strong bicycle parts. Each method works best for unique shapes, materials, and production sizes. Here are the main techniques we use for fabricating bicycle parts and components.

                                CNC Milling

                                CNC milling cuts through a solid block with rotational cutting tools. Through this method, we can build intricate shapes, flat surfaces, and minute details like slots and deep pockets.

                                Our 3, 4, and 5-axis milling services give us access to hard-to-reach features and produce parts with complex geometry. These work best in making bike stems, brakemountst and suspension linkages when precision and finish are of concern.

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                                  CNC Turning

                                  Turning applies well to cylindrical, symmetrical parts, including axles, hubs, and pedal spindles. A cutting tool removes material from a workpiece that is spun on a chuck.

                                  It is a rapid and effective approach with round components, with smooth finishes and tight tolerances. We apply turning to parts that demand accurate dimensions and concentricity.

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                                    Thread Milling

                                    Thread milling involves the production of screw threads by travelling a rotating cutting tool in the preferred pattern. It produces strong and accurate threads in the bicycle components, such as the seat clamp and the axle fittings.

                                    Thread milling is highly regarded for making external or internal threads of various sizes. It also generates less heat without causing damage to the material.

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                                      Surface Grinding

                                      Surface grinding cleans and slides part surfaces with a spinning abrasive wheel. It is applied to obtain a quality finish on flat components like the brake mount or spacers. Grinding improves the final fit and helps reduce friction. It is particularly helpful where close surface tolerances must be achieved.

                                      Drilling and Boring

                                      Parts are drilled, and boring is used to enlarge or finish existing holes with high precision. These methods are used to make mounting points and bearing seats.

                                      CNC-controlled drilling and boring are used so that hole locations are precise and fit your design requirements. This enhances the assembly precision and the part strength.

                                      Slotting and Keyway Cutting

                                      Slotting is a process of cutting small grooves/channels in parts. Keyways are grooves used to hold keys and ensure that components cannot rotate.

                                      On components such as suspension linkage or hubs, we machine slots that hold the part in place to keep the alignment. The use of this technique assists in fitting the parts and functioning with reliability.

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                                        Materials We Use for CNC Machining

                                        Metals

                                        Why They Are Good

                                        Plastics

                                        Why They Are Good

                                         

                                        Aluminum

                                        Lightweight, strong, and corrosion-resistant

                                        Nylon

                                        Strong, flexible, and wear-resistant

                                         

                                        Stainless Steel

                                        Very durable and resists rust

                                        Delrin

                                        Low friction, smooth, and keeps its shape and form

                                         

                                        Titanium

                                        Extremely strong yet lightweight

                                        ABS

                                        Tough and impact-resistant

                                         

                                        Steel

                                        Very strong and good for heavy-duty parts

                                        Acrylic

                                        Clear and weather-resistant

                                         

                                        Brass

                                        Easy to machine and resists corrosion

                                        PTFE

                                        Very slippery and heat-resistant

                                         

                                        Bronze

                                        Long-lasting and wears well

                                           

                                        Copper

                                        Great for electrical and heat uses

                                           

                                        Zinc

                                        Easy to shape and corrosion-resistant

                                           

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                                          Our Post-Processing Solutions for Bicycle Parts

                                          • Anodizing: It adds a protective layer to aluminium parts and avoids scratches and resists corrosion. It also allows for vibrant colour finishes.
                                          • Passivization: It cleans stainless steel surfaces and improves their resistance to rust and wear capabilities.
                                          • Electroplating: It coats parts with metals like nickel or chrome. It makes them stronger and gives a polished shine.
                                          • Powder Coating: This applies a durable, coloured finish that protects parts from scratches and damage.
                                          • Insert Installation: It fits metal inserts into plastic parts to provide strong and secure threads.
                                          • Heat Treatment: Our heat treatment uses controlled heating and cooling to make metals harder and more durable for tough use.

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                                            Frequently Asked Questions

                                            Yes, we can, if you have drawings or CAD files, we’ll work with you to machine parts exactly as you need. If you want, our team can also review your designs and give you free DFM. We suggest improvements to make the parts stronger or easier to produce.

                                            We’re flexible, whether you need just a few prototype parts to test your design or a larger batch for production, we can handle it. This helps you avoid making big upfront investments.

                                            The time depends on the complexity and quantity, but we always aim to deliver as quickly as possible. We keep you informed throughout the process so you know when to expect your parts.

                                            Yes, we do. Based on how your bike will be used, we can recommend materials that offer the best balance of strength, weight, and durability to fit your needs and budget.
                                            Yes, every part is cleaned, measured, and inspected before shipping. If you need any finishing, like anodizing or powder coating, we can do that too, so your parts are ready to fit straight onto your bike.

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