LEGO Hose Pieces & Flexible Tubing

LEGO® hose parts include flexible tubing, rigid hoses, ribbed tubes, and pneumatic connections used in advanced building techniques. Builders use LEGO® hose pieces to create pipes, cables, fuel lines, mechanical details, and functional systems across Technic models, robotics projects, vehicles, and custom MOCs. Whether you need a LEGO® flexible hose, LEGO® tubing element, or rigid hose piece, these parts help create more realistic and detailed builds.

Types of LEGO® Hose Pieces and Tubing

LEGO® hose elements come in several formats designed for different building styles and mechanical functions.

• Flexible hoses: Soft tubing used as wiring, cables, and flexible connections in vehicles, robots, and machinery.
• Rigid hose pieces: Fixed-shape tubing including popular LEGO® rigid hose 3mm elements used for curved structures and detailed piping.
• Ribbed hoses: Textured tubing commonly used for breathing equipment, engine components, and mechanical detailing.
• Pneumatic hoses: Flexible LEGO® pneumatic tubing used in Technic systems with pumps, valves, and cylinders.
• Tube and flex elements: LEGO® tube pieces and flex hose parts can add custom routing and realistic piping layouts.

Popular Uses for LEGO® Flexible Hose and Tube Pieces

LEGO® hoses and tubing allow builders to add movement, realism, and mechanical complexity to custom creations.

• Technic builds: LEGO® Technic hose systems connect pneumatic components and create realistic machine functions.
• Vehicle detailing: Add fuel lines, engine pipes, brake tubing, and wiring.
• Robotics projects: Flexible LEGO® tubing creates realistic cable routing for robots and machinery.
• Spacecraft and sci-fi MOCs: Flexible and ribbed hoses are commonly used for layered greebling and surface details.
• Industrial builds: Pipe systems and hose elements help create factories, engines, and technical structures.

Find Specialized LEGO® Building Elements

Builders frequently combine hose pieces with LEGO® pneumatic parts for functional Technic systems and with LEGO® string and net elements for flexible building techniques.

Looking to order LEGO® elements for larger projects? Explore our LEGO® parts collection with thousands of individual pieces, tubing elements, and specialized building parts.

LEGO® Hose and Tubing FAQ

Can I cut LEGO® hoses and flexible tubes to custom lengths?

Certain LEGO® hose elements, particularly pneumatic hoses and some tubing elements, can be cut to custom lengths. Builders often use longer hose pieces and trim them to fit specific projects. Always measure carefully before cutting, as a shortened hose cannot be restored to its original length.

What is the difference between a 3mm rigid hose and a 4mm pneumatic hose?

A 3mm rigid hose is a stiffer plastic tube designed to hold its shape. It is commonly used for structural curves, handrails, decorative piping, and framework details. A 4mm pneumatic hose is made from a flexible material with a hollow core designed to carry compressed air between pumps, valves, and cylinders in LEGO® pneumatic systems.

How are LEGO® hose lengths measured?

Many hose and tubing elements are measured in LEGO® length units (L), which correspond to the stud spacing used throughout the LEGO® building system. For example, a hose listed as 16L is the same length as sixteen studs placed in a straight line, making it easier to plan layouts and routing within a build.

Are LEGO® ribbed hoses flexible?

LEGO® ribbed hoses are semi-flexible. They can curve around structures and are commonly used for engine detailing, industrial piping, breathing apparatus, and mechanical designs. However, they are generally less flexible than pneumatic hoses and may deform if bent too sharply.

Do LEGO® hoses fit over standard bar elements?

Some hose elements can be connected to bars, clips, and specialised connectors, while others are designed primarily for routing through builds or connecting pneumatic components. Compatibility depends on the specific hose type, diameter, and intended application.

What is the difference between a LEGO® flexible axle and flexible tubing?

Flexible axles are solid bendable elements designed to create curved outlines, vehicle bodywork, and structural shapes. Flexible tubing is hollow and is typically used to represent pipes, cables, hoses, and pneumatic connections. While both can be bent into curves, they serve different building purposes.

What are LEGO® pneumatic hoses used for?

LEGO® pneumatic hoses connect pumps, valves, air tanks, and cylinders in pneumatic systems. They allow compressed air to move between components and are commonly used in Technic construction equipment, vehicles, machinery, and other functional models.