Rear shock linkages, damper bodies, air spring caps, mounts, and hardware engineered for MTB, enduro, downhill, and e-bike platforms. Precision that survives repeated impacts and keeps your suspension kinematics consistent.
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According to our CNC machining knowledge base, CNC machining is a subtractive manufacturing process in which pre-programmed computer software dictates the movement of factory tools and machinery. For bicycle suspension, that control translates directly to rider confidence: a rear linkage bore that is off by even 0.02mm can create binding under full compression, while a damper body with poor surface finish accelerates seal wear and oil contamination.
At CNC Works AI, we produce suspension parts for OEM manufacturers and aftermarket builders with tolerances down to ±0.005mm. We draw on real-world benchmarks such as the Mondraker World Cup program, where custom 6061-T6 aluminum rear suspension linkage parts were CNC machined, bead-blasted, and matte Type II anodized in just 11 days to deliver rider-specific geometry adjustments. Whether you need a single prototype linkage or a production run of damper bodies, we deliver end-to-end manufacturing with full inspection documentation.
Every part is optimized for weight, fatigue life, and corrosion resistance in aggressive riding environments.
Rocker links and seatstay bridges that control leverage rate and wheel path. 5-axis machining keeps pivot bores coaxial within ±0.01mm.
Precision bores for IFP and piston assemblies. Surface finish held to Ra 0.4μm to protect dynamic seals under high-velocity strokes.
High-pressure caps with Schrader valve interfaces and O-ring grooves. Threads machined to Class 2A/3A for leak-free seals.
Through-axle style eyelets and mounting hardware that transfer suspension loads into the frame without play or fatigue failures.
Fork crowns and CSUs that align stanchions and handle steering loads. Critical bores machined for concentricity and press fit.
Pivot bolts, preload collars, rebound knobs, and travel-adjust hardware in aluminum or titanium for gram savings.
Real-world suspension components machined for race teams and OEM brands.
6061-T6 linkage set with matte Type II anodize.
Deep-cavity 5-axis machined with IFP bore.
Low-friction piston with volume spacer threads.
7075-T6 eyelet with hard anodized bore.
CSU crown with aligned stanchion bores.
Grade 9 titanium pivot bolt for weight savings.
Every alloy is selected for fatigue life, weight, and surface treatment compatibility.
High strength for linkages, mounts, and hardware. Hard anodized for wear and corrosion resistance in mud and dust.
Excellent machinability and corrosion resistance. Ideal for damper bodies, air caps, and fork crowns.
Lightweight pivot bolts and adjusters with outstanding corrosion resistance and fatigue strength.
Low-friction bushings, spacers, and volume reducers with excellent wear and self-lubricating properties.
A suspension-specific workflow from billet to race-ready component.
We review pivot geometry, material selection, and anodize masking to reduce machining time and avoid tolerance stack-up.
Complex linkages are roughed in a single setup, eliminating repositioning error and preserving thin-wall stability.
Pivot bores are finish-machined and reamed to H7. Surface finish is verified before anodize to protect seal fits.
Type II or Type III anodize is applied, followed by 100% CMM verification and pivot-pin fit check.
Typical tolerances, materials, and finishes for bicycle suspension parts.
| Component | Critical Dimension | Material / Finish |
|---|---|---|
| Rear Shock Linkage | Pivot bore H7, coaxiality ±0.01mm | 7075-T6, Type II anodize |
| Damper Body | Bore diameter ±0.005mm, Ra 0.4μm | 6061-T6, Type III hard anodize |
| Air Spring Cap | Thread Class 2A/3A, O-ring groove ±0.02mm | 6061-T6, Type II anodize |
| Shock Mount / Eyelet | Mounting bore ±0.02mm, fatigue tested | 7075-T6, hard anodize |
| Stanchion Crown | Stanchion bore concentricity ±0.005mm | 6061-T6, bead blast |
| Ti Link Hardware | Thread fit Class 3A | Ti Grade 9, polished/passivated |
Verifications that keep your linkage moving freely and your damper sealed.
CMM verifies bore position, diameter, and coaxiality to prevent binding during full travel.
Damper bores and seal surfaces are checked to Ra 0.4μm to protect dynamic seals and oil consistency.
Hard anodize thickness and hardness tested per MIL-A-8625 Type III for wear resistance.
Linkages and mounts are cycled to ISO 4210 fatigue requirements for repeated impact loads.
We also machine bottom-out bumpers, volume spacers, rebound assemblies, and custom linkage kits. Send your drawing and our engineers will reply within 4 hours.
Submit Your DrawingWe machine rear shock linkages, damper bodies, air spring caps, shock mounts and eyelets, stanchion crowns, pivot bolts, preload collars, rebound adjusters, volume spacers, and custom linkage hardware for mountain bikes, enduro bikes, downhill bikes, gravel bikes, and e-bikes.
According to our CNC machining knowledge base, Mondraker used CNC machining to produce custom rear suspension linkage components in just 11 days for the 2021 UCI Mountain Bike World Cup. We match that pace for similar 6061-T6 or 7075-T6 linkage sets, with bead-blasted and Type II anodized finishes ready for assembly.
Our standard CNC machining tolerance is ±0.005mm. For pivot bores and stanchion crowns where concentricity directly affects suspension feel, we hold H7 bore tolerances and coaxiality within ±0.01mm. According to our knowledge base, precision machining processes can obtain tolerances as tight as ±0.001" (±0.025mm) when required.
7075-T6 is preferred for suspension linkages, mounts, and hardware because of its high strength-to-weight ratio and fatigue resistance. 6061-T6 is often chosen for damper bodies, air caps, and fork crowns where excellent machinability and corrosion resistance are priorities. Both alloys respond well to anodizing for additional surface protection.
According to our knowledge base, aluminum anodizing is an electrochemical process that creates a durable oxide layer. We offer Type II anodizing for matte or colored finishes on linkages and caps, and Type III hard anodizing per MIL-A-8625 for damper bodies and eyelets that require enhanced wear resistance.
Yes. Complex rear linkages and fork crowns often require 5-axis CNC machining to reach angled pivot bores and undercut pockets in a single setup. 5-axis machining keeps the tool tangent to the workpiece, reduces repositioning error, and improves surface finish on hard-to-reach features.
Absolutely. We support one-off prototype linkages for race teams and production volumes of 1,000+ units for OEM brands. Quick-change tooling and standardized fixtures allow us to scale without losing the ±0.005mm repeatability your suspension design demands.
Every shipment includes a full inspection report, material certification, certificate of conformance, and CMM dimensional data for critical features. For suspension safety parts, we also provide fatigue test reports and anodize thickness/hardness certificates upon request.
Every landing, drop, and rock garden tests your components. Make sure your suspension parts are precision-engineered to keep riders in control. Get your instant quote now.
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