Stahlbus Front Bleed Valve M8x1.25x20mm Harley Davidson and Honda

Increase your motorcycle braking power by up to 30% by optimizing bleeding with Stahlbus technology. The Stahlbus Bleeder Valve Front M8x1.25x20mm Harley Davidson and Honda allows you to bleed your motorcycle brakes on your own, cleanly and quickly. Every mechanic’s dream!

Brake fluid is just as important for the braking process as brake pads and brake discs. In fact, even the most expensive and modern braking system is useless if there’s air in the system! The Stahlbus bleeder screw is therefore an essential accessory to maintain your brakes and fully exploit your bike’s performance.

Stahlbus Bleeder Screw Installation Advice

To correctly install a Stahlbus® bleeder screw, first remove the original bleeder screw, then screw the valve onto the brake cylinder.

Next, open the top part slightly (half a turn) and operate the brake/clutch lever or pedal to expel all air bubbles.

With each press, the check valve opens and allows fluid to escape, then automatically closes as soon as you release, preventing any air from entering.

Once the bleeding and fluid exchange are completed, tighten the screw half a turn to secure sealing and don’t forget to replace the protective cap.

Technical Features of the Stahlbus Bleeder Valve

The Stahlbus Bleeder Valve Front M8x1.25x20mm Harley Davidson and Honda is a precision nickel-plated steel swivel part designed to replace the traditional threaded bleeder fitting:

• Total sealing guaranteed by a high-quality O-ring
• Reliable check valve function for easy one-person bleeding
• Compatible with vacuum and pressure systems
• No wear on brake caliper threads thanks to intelligent mounting

By default, Stahlbus valves are equipped with EPDM O-rings for brake fluid. If you use hydraulic oil, a Viton O-ring must be installed.

Tested and approved by TÜV Rheinland Group, the Stahlbus® bleeder valve ensures maximum reliability.

The Stahlbus Bleeder Valve is sold with:

• Detailed installation instructions and user manual
• Protective caps in different colors made of anodized aluminum

Discover How Stahlbus Bleeder Valves Work

The patented Stahlbus® bleeder valve is the ideal solution to simplify and secure the bleeding of your braking or hydraulic clutch systems.

Designed in two parts and fitted with a high-quality O-ring, it ensures absolute tightness and integrates a check valve that prevents any air ingress or fluid leakage. Unlike standard bleeder screws, only the upper element is loosened during bleeding, guaranteeing clean, safe operation without any risk of damaging the brake caliper threads.

No more complex handling: the valve automatically closes in case of pressure drop and efficiently removes air bubbles thanks to optimized flow.

Result: sharp, powerful, and consistent braking.

Find Stahlbus bleeder valves available in different thread sizes in our shop.