S‑PARTS Titanium Alloy Headset Spacers

Product Introduction 

S‑PARTS Titanium Alloy Headset Spacers — Precision Titanium Cockpit Components for High-Performance Cycling

S‑PARTS Titanium Alloy Headset Spacers are aerospace-grade bicycle cockpit components precision-machined from Ti-6Al-4V (Grade 5) titanium alloy. The spacers have an outstanding strength-to-weight ratio with a density of just 4.43 g/cm3 and a tensile strength of more than 895 MPa. CNC skeletonizing lowers weight to rival carbon fiber. PVD vacuum coating gives durability, UV resistant color and a premium finish. Manufactured to +/- 0.01mm specifications, they guaranty a play-free fit on common 1-1/8″ steerer tubes. Whether you’re creating a fast road bike or a custom high-end construction, these spacers provide a solid, corrosion-resistant addition. 

Product Specification & OEM Customization

 

Parameter	Details
Material Grade	Ti-6Al-4V (Grade 5 / TC4)
Material Standard	ASTM, AMS, DIN
Tensile Strength	≥ 895 MPa
Material Density	4.43 g/cm³
Inner Diameter Compatibility	1-1/8″ (28.6mm) standard; customized
Thickness	Customized per drawing
Dimensional Tolerance	±0.01mm on ID/OD
Surface Treatment	Machined Finish / PVD Coating / Anodizing / Polishing
PVD Color Options	Gold, Black, Rainbow (Oil Slick), customized
Manufacturing Process	CNC Turning, Milling, 5-Axis CNC Machining
Design Support	2D drawings, 3D models, OEM/ODM

Product Application

These spacers serve as structural columns in the headset assembly of road bikes, gravel bikes, mountain bikes, and custom high-end builds. They transmit preload force from the top cap bolt evenly down to the headset bearings.

They are particularly well-suited for carbon frame builds, where galvanic corrosion from aluminum spacers is a known long-term risk. Titanium's chemical inertness eliminates that concern entirely.

For competitive cyclists focused on weight savings and aesthetics, the skeletonized and PVD-coated variants of S‑PARTS Titanium Alloy Headset Spacers offer a meaningful performance and visual upgrade over standard components.

Factory Show

Why Choose Our S‑PARTS Titanium Alloy Headset Spacers

Standard aluminum spacers corrode, fatigue, and lack visual appeal. Carbon spacers crack under over-torque. The products solve all three problems in a single component.

Ti-6Al-4V forms a stable oxide layer that resists galvanic corrosion, even against sweat and moisture. The material will not seize on carbon or steel steerers the way aluminum does.

Unlike carbon spacers that delaminate under high compression, titanium withstands standard 5–6 Nm preload torque without deformation. This makes it the safer, longer-lasting choice for demanding applications.

PVD coating bonds color at the molecular level. Finishes such as Gold, Black, and Oil Slick remain vibrant and abrasion-resistant for the component's full service life — something anodized aluminum simply cannot match.

Manufacturing Process

Production begins with certified Ti-6Al-4V bar stock verified through spectrographic composition analysis. CNC turn-milling then shapes each spacer with tightly controlled inner and outer diameters.

Precision face-milling ensures near-perfect parallelism between the top and bottom surfaces. This is critical — any deviation causes uneven compression on the headset bearings, leading to creaking and premature wear.

CNC skeletonization removes excess material strategically, achieving a final weight of approximately 3–5g for a standard 10mm spacer. This brings mass down to a level comparable to thicker-walled carbon spacers, but with far greater impact resistance.

After machining, parts undergo deburring and surface finishing. PVD vacuum coating is applied last, creating a molecular bond between the coating and the titanium substrate for lasting hardness and colorfastness.

Receiving Drawings

Annealing

Developing Machining Process

Finish Machining

Preparing Raw Materials

Deburring

Rough Machining

Deburring

Manufacturing Capability

Baoji Huacan has more than 40 high-precision CNC lathes and machining centers, including 5-axis and gantry ones. 10+ years expertise in titanium machining with annual production capacity of more than 1,000 tons of machined components.

Manufacturing capability is in excess of 3,000 tons per year with a 4,000 ton hydraulic press, and support for difficult near-net-shape preforms as required. The VAR and PAM furnaces can melt more than 5,000 tons of raw material a year, providing a completely traceable supply of high purity titanium ingots.

melting	melting	forging	forging	rolling

Quality Control

Every batch of the product passes a multi-stage inspection protocol. Incoming material is verified by spectrographic analysis to confirm Ti-6Al-4V composition, ruling out substitution with softer Grade 2 material.

CMM, dial indicators, and Go/No-Go gauges verify inner diameter and face parallelism to micron-level precision. Poor parallelism is the leading cause of headset creaking — so this check is never skipped.

PVD adhesion is verified through scratch and cross-hatch testing. Visual inspection under magnification checks for CNC chatter marks or burrs that could damage carbon steerer tubes. Full material certificates and inspection reports accompany every shipment.

Packaging & Shipping

FAQ

Q: Are these spacers safe for carbon steerer tubes?

A：Titanium is chemically inert and does not react with carbon fiber composite. Unlike aluminum, it will not galvanically bond to carbon resin even in the presence of sweat or moisture.

Q: How does the weight compare to carbon spacers?

A：CNC skeletonization brings a 10mm S‑PARTS spacer to approximately 3–5g — comparable to thicker-walled carbon spacers — but with far higher compressive strength and impact resistance.

Q: Will the PVD color fade?

A：No. PVD coating bonds at the molecular level, creating hardness and colorfastness that outlasts anodized aluminum finishes. UV exposure does not degrade the color.

Q: Can these be cleaned with harsh solvents?

A：Yes. The products resist degreasers, acetone, and isopropyl alcohol without surface damage — a clear advantage over painted or plastic components.

Q: What customization is available for OEM buyers?

A：You can customize thickness, diameter, PVD color, surface finish, and material grade based on your drawings or 3D models. Prototype and small-batch orders are both supported.

Contact Us

Ready to upgrade your build with S‑PARTS Titanium Alloy Headset Spacers? Contact our team at sherry@hc-titanium.com for pricing, samples, or OEM inquiries.