These are CNC machined motorcycle parts produced on 3-axis and 5-axis mills with tolerances held to 0.005mm and runout controlled under 0.01mm on rotating components. You get par
CNC Machined Motorcycle Parts | BQUQ Precision Manufacturing China
These are CNC machined motorcycle parts produced on 3-axis and 5-axis mills with tolerances held to ±0.005mm and runout controlled under 0.01mm on rotating components. You get parts ready for assembl
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These are CNC machined motorcycle parts produced on 3-axis and 5-axis mills with tolerances held to ±0.005mm and runout controlled under 0.01mm on rotating components. You get parts ready for assembly out of the crate—no secondary deburring, no fitment surprises—with standard lead times of 7 days for prototypes and 15 days for production runs. We have been machining motorcycle components in Dongguan since 2004, and every part ships with a material certificate and inspection report.
How We Hold 0.01mm Runout on Axles and Spindles
Runout kills bearings and seals. On axle shafts, sprocket carriers, and brake rotor spacers, we machine between centers or use a precision collet chuck with a hydraulic expansion arbor. This eliminates the deflection you get from a 3-jaw chuck. Our CNC lathes with C-axis milling capability cut the hex, keyway, and thread in one setup, so the datum never changes. Final runout is verified on a V-block with a dial indicator—every single part, not a sample.
Materials and Heat Treatment We Use for Crash and Wear Resistance
We stock 6061-T6 aluminum for triple clamps and levers, 7075-T651 for rearsets and peg brackets, and 4140 chromoly steel for axles and pivot pins. For stainless parts, we use 304 and 316L. Heat treatment is done in-house or at our partner furnace: 4140 gets hardened to 28-32 HRC for axles, and 7075 gets T6 temper verification. If you need case-hardened 8620 steel, we do that too—up to 60 HRC case depth of 0.8mm. We do not use mystery alloys; every bar has a mill cert.
Threads, Keyways, and O-Ring Grooves Machined in One Setup
Motorcycle parts are not simple cubes. A brake pedal arm has a splined bore, a threaded hole for the master cylinder rod, and a counterbore for a bearing. We machine these features in a single clamping using a mill-turn center. Threads are cut, not rolled, to meet class 2A/3A specs. O-ring grooves are held to ±0.025mm on width and depth, and we deburr every edge with a ceramic brush or manual file depending on the feature. You will not find a sharp edge on any part we ship.
Surface Finish Options: From 0.4 Ra to Hard Anodizing
Standard machined finish is 1.6 Ra on functional surfaces and 0.8 Ra on sealing surfaces. If you want show-quality, we polish to 0.4 Ra. For aluminum parts, we offer clear or black hard anodizing to MIL-A-8625 type III—that gives a 50+ micron coating and a surface hardness of 60+ HRC equivalent. For steel parts, we apply zinc-nickel plating or black oxide. Every finish is tested for thickness and adhesion before we pack it.
Inspection Before Every Shipment: CMM and Hardness Reports
We do not rely on the machine to tell us the part is good. Every batch goes through a CMM check on critical dimensions—bore diameters, hole positions, and concentricity. We also run a Rockwell hardness test on each heat-treated batch and include the reading on the certificate. Threads are checked with go/no-go plugs. A final visual inspection under 2x magnification catches scratches or tool marks. You get a PDF report with your shipment, and we keep records for 10 years.
Why Small Batches and One-Offs Are Our Normal
We do not have a minimum order quantity. If you need one prototype fork clamp or a set of 50 custom footpeg brackets, we will run them. Our machines are set up for quick changeover—average setup time is 45 minutes—so we can afford to run small lots. This is why custom builders and race teams in Europe and North America keep coming back: they order 10 parts this month, 20 next month, and we hold the same tolerance every time. No MOQ, no minimum order value.
Packing and Shipping to Protect Threads and Surfaces
Threads get plastic caps or rubber plugs. Precision bores get anti-rust paper inserted. Each part is wrapped in VCI (vapor corrosion inhibitor) film, then placed in partitioned boxes with foam. We ship via DHL, FedEx, or UPS for small parcels (3-5 days to USA/EU), or by air freight for bulk orders (7-10 days). For large axles or swingarms, we use custom wooden crates with steel strapping. No part touches another part in transit.
Parameter
Specification
Materials
6061-T6, 7075-T651, 4140, 8620, 304, 316L
Max part size
800mm x 400mm x 400mm (milling); Ø300mm x 500mm (turning)
Standard tolerance
±0.005mm (holes); ±0.01mm (external features)
Runout tolerance
0.01mm on rotating surfaces (axles, spacers)
Surface finish (machined)
0.8 Ra to 1.6 Ra; polished 0.4 Ra
Hardness range
28-32 HRC (4140); up to 60 HRC (8620 case-hardened)
Coatings
Black oxide, zinc-nickel, hard anodize type III
Lead time (prototype)
7 days
Lead time (production)
15 days for standard quantities
MOQ
No MOQ, single-piece orders accepted
Inspection
CMM, Rockwell hardness, go/no-go thread gauges
Certificates
Material cert, inspection report, heat treat report
Common Parts We Machine for Motorcycles
Our customers order triple clamps (fork yokes), brake and clutch levers, rearsets, footpeg brackets, axle sliders, sprocket carriers, brake caliper mounts, handlebar risers, throttle tubes, and custom engine covers. We also make production quantities of spacer sleeves, pivot pins, and collar bushes for suspension linkage systems. If you have a drawing for a part that does not fit these categories, send it anyway—we have machined everything from throttle housings to radiator brackets.
What is your MOQ for CNC machined motorcycle parts?
There is no MOQ at BQUQ—we accept one-off prototypes and small production runs of 5 to 10 pieces without any price penalty per unit.
Can you match the material spec of my OEM part?
Yes, we can match any OEM material or replace it with a higher-strength alloy like 7075-T651 for aluminum or 4140 chromoly for steel, but we always confirm the grade with you before machining.
How do you guarantee quality on a batch of 100 parts?
We inspect the first article on a CMM before production starts, then check critical dimensions every 10 parts during the run, and do a 100% inspection on threads, runout, and surface finish before packing.
What is the actual lead time if I need parts in 3 weeks?
For standard CNC machined motorcycle parts with no exotic coatings, we ship within 15 days—for urgent orders, we can expedite prototypes in 5 days and production in 10 days at a 15% surcharge.
Before you finalize your drawing, review our CNC cutting tool selection guide to understand surface finish options, and check the CNC machining tolerances guide to see what we can hold on your specific features. These will help you avoid over-specifying and keep your cost down.
Send your drawing and get a firm quote within 12 hours. Email sc@bquq.com or WhatsApp +86 13713157787. We will confirm material, tolerance, and lead time in the same business day. No MOQ, made in China, precision manufacturing from BQUQ.
