Titanium Bike Dropouts Rear Axle — CNC Precision Custom Parts for High-Performance Cycling Frames

Engineered for frame builders and cycling component manufacturers who demand zero compromise, the titanium bike dropouts rear axle from Baoji Huacan delivers exceptional structural precision for rear wheel integration. This dropout is CNC machined from Grade 5 Ti-6Al-4V titanium to ±0.01 mm tolerances. It accepts the 12×142 mm axle standard and has superior fatigue resistance under cyclic riding loads. Whether you're constructing adventure touring frames or performance hardtails, this component will provide you the corrosion resistance, drivetrain rigidity and dimensional precision your project needs.

Specification	Detail
Material Grade	Grade 5 (Ti-6Al-4V), Grade 2, Grade 9, Grade 23; other grades available upon request
Material Standard	ASTM, AMS, DIN standards according to material grade and customer requirements
Rear Axle Spacing	12×142 mm standard; 12×148 mm Boost and other spacing options available
Axle / Thread Interface	Customized according to frame and axle design; M12 threads and other configurations available
CNC Machining Tolerance	±0.02 mm standard; down to ±0.01 mm for critical features, subject to part geometry
Dimensions	Customized according to customer drawings; typical machining size up to 300 × 300 × 150 mm
Surface Finish	As-machined, bead blasted, brushed, polished, titanium anodized
CNC Machining Process	3-axis / 4-axis / 5-axis CNC machining, drilling, tapping, reaming and contour machining
Design & Customization	OEM/ODM support; 2D drawings, 3D CAD files and engineering customization
Inspection & Quality Control	CMM inspection, dimensional inspection and material certificates available upon request

titanium dropouts

· ±0.01 mm CNC tolerance for precise axle bore fit and zero wheel play

· Grade 5 Ti-6Al-4V — 3× stronger than standard aluminum at a fraction of the weight

· Corrosion-resistant in coastal air, road salt, and sweat environments

· Fatigue-resistant geometry designed for thousands of riding cycles

· Compatible with replaceable derailleur hangers and UDH interface designs

· Weld-ready surfaces with Ra finishes suited to TIG welding integration

Custom Titanium Bicycle Frames

Titanium dropouts application

Mountain & Gravel Bikes

Titanium dropouts application

High-Performance Road Bikes

titanium dropouts application

Adventure & Bikepacking Frames — Where corrosion resistance and long-term reliability in remote conditions are non-negotiable.

Belt-Drive & Internal Gear Hub Systems — Split-dropout designs for Rohloff or Gates Carbon Drive belt tensioning are fully customizable to your frame layout.

Hardtail Enduro & All-Mountain Bikes — High lateral stiffness of titanium bike dropouts rear axle absorbs trail impact while maintaining precise wheel alignment under aggressive cornering loads.

In the areas that count-weight, strength and lifespan -titanium beats steel and aluminium.

Grade 5 Ti-6Al-4V has a tensile strength of 900–1000 MPa and a density of just 4.43 g/cm³. That means you get a high-strength component without adding any weight to your frame.

The low modulus of elasticity (~113 Gpa), naturally absorbs trail vibration, decreasing stress on the rider and frame. Lateral rigidity is completely preserved for smooth power transmission.

A self-forming passive oxide layer makes this part virtually immune to road salt, moisture, and sweat — no coating required, no rust, ever.

· 40+ CNC lathes, machining centers, and gantry systems

· 10+ years of titanium precision machining experience

· 1,000+ tons annual production capacity

· 100+ international client collaborations


melting	melting	forging	forging	rolling

· Raw material verified by spectrometer and supplier certification

· In-process dimensional checks at every production stage

· CMM inspection for axle bore concentricity and perpendicularity

· Thread verified with Go/No-Go gauge testing

· Dye penetrant inspection (DPI) for surface micro-crack detection

· Full inspection report and material traceability provided with each shipment

Mechanical Properties Testing

Inner Diameter Measurement

Ultrasonic Testing

CMM Dimensional

Mounting Hole Diameter Measurement

Quality Management System Certification

· Custom foam inserts for component protection

· Vacuum-sealed bags with desiccants against moisture

· Wooden crates for bulk orders

· Full labeling and documentation for easy tracking

· Air freight for urgent orders; sea freight for cost-effective bulk shipments

Q: Why use Ti-6Al-4V instead of Grade 9 titanium for dropouts?

A：Grade 9 is softer. Under axle torque, it risks premature thread wear and deformation at the bore interface. Ti-6Al-4V provides the hardness and strength required for long-term reliability.

Q: Does a titanium dropout need anti-seize grease?

A：Yes. Titanium is prone to galling under threaded contact. Always apply copper or nickel-based anti-seize to the axle threads before installation to prevent cold welding.

Q: How do I know if my dropouts are misaligned?

A：Symptoms include axle threading resistance, disc brake rub that can't be adjusted, or an off-center wheel. Use a derailleur hanger alignment gauge and dropout alignment tool to diagnose the issue.

Q: Can you produce dropouts for Boost 148 mm spacing?

A：Yes. We support 142 mm, 148 mm Boost, and other custom spacing configurations based on your frame drawings.

Q: Do you support custom derailleur hanger interfaces?

A：Yes, including replaceable hanger designs and UDH-compatible configurations, all produced to your provided specifications.

Contact Us

Ready to build with precision titanium? Contact us at sherry@hc-titanium.com and let's create the perfect titanium bike dropouts rear axle for your frame.