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Grade 5 Titanium Double Banjo Bolt - China Factory Suppliers for Motorcycle Brake Systems and Racing Applications
Key Features
Stable Hydraulic Pressure Transfer Under Hard Braking
Grade 5 titanium has ≥825 MPa yield strength. This helps the titanium double banjo bolt resist elastic deformation during repeated heavy braking. Hydraulic pressure stays more consistent across high-load brake cycles.
Brake Fluid Compatibility for Long Service Life
Titanium forms a stable passive surface and performs well around DOT 4 and DOT 5.1 brake fluids. The double banjo bolt helps keep threaded areas in better condition over time, making future brake line servicing easier.
Pre-Drilled Safety Wire Hole for Race Preparation
The external hex head is machined with a locking wire hole before shipment. Workshops and race teams can install safety wire directly, reducing extra preparation work before race inspection.
Lower Hardware Weight for Race and Custom Builds
Titanium is about 56% of steel density. The bolt keeps the strength required for hydraulic brake systems while reducing small hardware weight. In race and custom builds, those details often add up.
Precision Hex Socket Fitment
Each titanium double banjo bolt is machined from solid titanium bar stock with rolled threads and controlled tolerances. Smooth internal channels help crush washers seat evenly against hydraulic ports for more consistent high-pressure sealing.
Installation & Maintenance Guidance
Verify Thread Pitch and Engagement Depth Before Installation. M10×1.0 is common on many European motorcycles, while M10×1.25 appears more often on Japanese models. Maintain a minimum engagement depth of about 9–10 mm inside the caliper or master cylinder.
Use Three Crush Washers for Dual Brake Line Installations. Use three crush washers when stacking two banjo fittings. Place one washer between the fittings and one on each outer side. Use hand tools or a torque wrench and follow 18–22 N·m as a reference range to avoid damaging aluminum threads.
Technical Specifications
1. Material & Mechanical Properties
| Parameter | Details |
|---|---|
| Material | Grade 5 Titanium (Ti-6Al-4V) |
| Density | 4.43 g/cm³ |
| Tensile Strength | ≥ 895 MPa |
| Yield Strength | ≥ 825 MPa |
| Hardness | 30–36 HRC |
| Corrosion Resistance | High resistance to DOT4 / DOT5.1 environments |
2. Dimensional & Thread Data
| Parameter | Details |
|---|---|
| Diameter | M10 |
| Length Range | 25–35 mm |
| Thread Pitch | 1.0 mm / 1.25 mm |
| Drive Type | Metric |
| Drive Type | External Hex |
3. Finishing & Customization Options
| Parameter | Details |
|---|---|
| Surface Process | Polishing / Anodizing / PVD |
| Logo Engraving | Custom laser marking available |
| Packaging | Bulk cartons / Custom retail sets |
| OEM Customization | Supported (size, length, finish, color) |
Application Scenarios
Motorcycle Applications
Front Brake Master Cylinder Dual Brake Line Connections
Mounted at the front brake master cylinder where separate hoses feed left and right calipers. The titanium double banjo bolt secures stacked banjo fittings in one outlet and keeps dual brake hose routing more compact.
Front Brake Caliper Crossover Line Connections
Used where one caliper feeds a crossover brake line to the opposite side. One fastening point secures both banjo fittings and simplifies hose removal during brake service.
Rear Brake Calipers in Linked or Dual-Circuit Brake Systems
Occasionally used where two hydraulic lines meet at rear brake assemblies. Seen in linked braking layouts and selected race builds with additional hydraulic circuits.
Extended Applications
Dual-Circuit Hydraulic Handbrake Systems
Seen on drift cars and rally builds using independent hydraulic handbrakes. The titanium double banjo bolt secures stacked banjo fittings at the master cylinder and keeps hydraulic routing simpler around the assembly.
Frequently Asked Questions
Q: What grade of titanium is used for the double banjo bolt?
The double banjo bolt is machined from Grade 5 Titanium (Ti-6Al-4V), which provides a yield strength of ≥825 MPa and high resistance to harsh DOT 4 and DOT 5.1 brake fluids.
Q: How do I determine the correct thread pitch for my motorcycle?
Common thread pitches include M10×1.0, which is typically found on European motorcycle brands, and M10×1.25, which is more common on Japanese models. Always verify your specific caliper or master cylinder thread specifications before installing.
Q: How many crush washers are required for a dual brake line installation?
You should use exactly three crush washers when stacking two banjo fittings: place one washer between the two fittings and one washer on each outer side to ensure a proper high-pressure seal.
Q: What is the recommended torque specification for these titanium bolts?
We recommend using hand tools or a torque wrench to tighten the bolt to a reference range of 18–22 N·m. This protects the bolt while preventing damage to the softer aluminum threads of the caliper or master cylinder.
Q: Is the titanium double banjo bolt pre-drilled for safety wire?
Yes, the external hex head is machined with a locking wire hole prior to shipment. This allows race teams and workshops to install safety wire immediately for race inspections without additional preparation.
Q: How does the weight of this titanium bolt compare to standard steel hardware?
Titanium has approximately 56% of the density of steel. This allows the double banjo bolt to maintain the necessary high strength required for hydraulic brake systems while significantly reducing the weight of the hardware.