Technic Brick Modified 2 x 2 with Rotation Joint Ball

The LEGO® Technic Brick Modified 2 x 2 with Pin Hole and Rotation Joint Ball Half Vertical (MPN 48171) combines a compact Technic brick with an integrated ball joint, making it ideal for articulated mechanisms, adjustable structures, and strong pivoting assemblies. The built-in Technic pin hole and vertical ball connection allow secure movement while remaining fully compatible with standard LEGO® Technic building systems.

Browse our complete range of LEGO® Technic Parts, discover more LEGO® Technic Bricks, strengthen your models with LEGO® Technic Beams, and complete moving assemblies using LEGO® Technic Pins & Connectors.

Designed for Strong Moving Connections

This modified Technic brick is frequently used wherever smooth articulation and secure structural support are required. The integrated rotation joint provides a reliable attachment point for ball joint systems, while the Technic pin hole allows easy integration into frames, steering assemblies, robotic mechanisms, and adjustable constructions.

• Modified 2 × 2 Technic brick with integrated vertical rotation joint.
• Built-in Technic pin hole for secure structural connections.
• Compatible with standard LEGO® Technic beams, pins, axles and ball joints.
• Suitable for mechanical models, articulated figures, vehicles and custom engineering projects.
• Available in multiple colours for a wide variety of building applications.

Suggested Building Ideas

• Articulated Robots. Create movable shoulders, hips and limb joints for mech designs.
• Vehicle Suspension. Build steering and suspension systems with controlled movement.
• Creature Models. Design flexible necks, tails and legs for brick-built animals and fantasy creatures.
• Adjustable Machinery. Add pivoting sections to cranes, excavators and industrial equipment.