What Is Titanium Banjo Bolt On A Brake Line?

Apr 15, 2026

Titanium banjo bolts are high-performance fasteners used to connect brake hoses to brake calipers or master cylinders; they are commonly found in the hydraulic brake systems of motorcycles, high-performance cars, and bicycles.

A banjo bolt is a hollow bolt whose unique design allows brake fluid to flow through the central bore and enter the brake line via side ports. This design is named for the circular connector section, which resembles the body of a banjo.

Features of Titanium Alloy Banjo Bolts

Features	Remarks
Materials	Typically, aerospace-grade Grade 5 titanium alloy (6AL-4V) is used.
Weight	About 40–45% lighter than steel bolts, weighing approximately 6–7 grams each
Strength	Tensile strength can reach 950 MPa or higher, surpassing that of ordinary steel bolts
Corrosion-resistant	Excellent rust and corrosion resistance, suitable for harsh environments
Heat-resistant	Suitable for high-temperature operating environments in braking systems

Main Types:

Single Banjo Bolt: Connects a single brake line, used in standard brake systems

Double Banjo Bolt: Connects two lines simultaneously, used in dual-caliper or linked brake systems

Common Specifications:

Thread Size: M10 x 1.0mm (commonly used with Brembo calipers), M10 x 1.25mm (commonly used on Japanese models)

Head: Flanged hex head design; requires a 10mm socket wrench

Surface Finish: Can be anodized in blue, gold, purple, etc., or heat-treated for DIY color customization

Applications:

Titanium alloy banjo bolts are primarily used in fields that demand extreme lightweight design and high performance, such as racing, high-end custom motorcycles (European models like BMW, Ducati, and KTM), and mountain bikes. Although each bolt reduces weight by only a few grams, this contributes significantly to reducing unsprung mass and improving handling precision, while also offering outstanding durability and a visually appealing aesthetic.

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