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Grade 5 Titanium Double Banjo Bolt for Motorcycle Brake Systems - China Suppliers & Factory
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
1
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.
2
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 (FAQ)
Q1: What is the advantage of using Grade 5 Titanium for double banjo bolts?
Grade 5 Titanium (Ti-6Al-4V) offers a high yield strength of ≥825 MPa and tensile strength of ≥895 MPa, which prevents elastic deformation under heavy braking pressure. Additionally, it reduces hardware weight by about 44% compared to steel.
Q2: Are these double banjo bolts compatible with DOT 4 and DOT 5.1 brake fluids?
Yes. Titanium forms a highly stable passive surface layer that is highly resistant to corrosion in DOT 4 and DOT 5.1 environments, ensuring a long service life and easy maintenance.
Q3: How do I choose the correct thread pitch for my motorcycle?
Verify your master cylinder or caliper thread specifications before installation. M10×1.0 threads are typically found on European motorcycle models, while M10×1.25 threads are common on Japanese models.
Q4: How many crush washers should I use for a dual brake line installation?
You should use three crush washers: place one washer between the two stacked banjo fittings, and one washer on each outer side of the fittings.
Q5: What is the recommended torque specification for these titanium bolts?
The recommended torque reference range is 18–22 N·m. Always use a manual torque wrench or hand tools to prevent damage to the receiving aluminum threads.
Q6: Do the bolts come pre-drilled for safety wires?
Yes, the external hex head is pre-drilled with a locking safety wire hole before shipping, making them ready for immediate race preparation and safety inspections.