Unitree - B2 Robot single leg
- Designed for B2 Robot – Genuine replacement single leg assembly engineered for seamless compatibility with the B2 robotic platform.
- Complete Leg Assembly – Includes the thigh joint, calf joint, body joint, and other essential structural components for a complete replacement.
- High-Strength Construction – Manufactured from durable, high-quality materials for reliable performance in demanding environments.
- Precision Engineering – Designed to deliver smooth, stable, and accurate movement for optimal robotic mobility.
- Left & Right Leg Options – Available in left and right configurations. Please select the correct side before ordering.
- Professional Replacement Part – Ideal for replacing damaged or worn leg assemblies to restore your B2 robot's performance.
- Durable for Industrial Use – Built to withstand frequent operation in inspection, security, research, and industrial applications.
- Easy Integration – Designed for seamless installation and compatibility with existing B2 robotic systems.
- Maintains Robot Stability – Helps preserve balance, mobility, and reliable movement across a variety of operating environments.
- OEM-Quality B2 Accessory – High-quality replacement component designed to meet the performance standards of the original equipment.
- Trusted dealerDirect manufacturer partnership
- Pan-India deliveryInsured shipping, all states
- Post-sale supportTraining + service included
What makes it work
Unitree B2 Single Leg Assembly
The Unitree B2 Single Leg Assembly is a complete, genuine replacement leg for the B2 industrial quadruped. It includes the thigh joint, calf joint, and body joint in one part, and it’s sold as a specific left or right side.
Left & Right Variants
High-Strength Construction
Precision Engineered
OEM-Quality Build
Full Specifications
| Specification | Details |
|---|---|
| Product | Unitree B2 Single Leg Assembly |
| Included Components | Thigh joint, calf joint, body joint, and the structural hardware connecting them |
| Construction | High-strength, durable materials engineered for repeated industrial-duty motion |
| Engineering Focus | Precision-machined joints for smooth, stable, and accurate leg movement |
| Side Options | Sold as a specific left leg or right leg — confirm the correct side before ordering |
| Installation | Designed for direct, seamless integration with the B2’s existing leg mounts |
| xBoom SKU | xboom-144676 |
| Specification | Details |
|---|---|
| Primary Platform | Unitree B2 industrial quadruped |
| Left vs. Right | Unlike the B2’s foot pad, which fits any leg position, this assembly is side-specific. Order the leg that actually needs replacing |
| B2-W Compatibility | This listing is verified for the standard B2. If you run a B2-W, confirm fitment with xBoom before ordering, since the wheeled variant’s leg design isn’t confirmed to match |
| Typical Use Case | Replacing one damaged or worn leg after a hard fall or collision, rather than routine scheduled maintenance |
One Damaged Leg Shouldn’t Retire the Whole Robot
Unitree B2 Single Leg Assembly: A Complete Leg, Restored in One Part
The Unitree B2 Single Leg Assembly replaces an entire leg in one piece. So a single hard fall or collision doesn’t have to sideline the whole robot. It bundles the thigh joint, calf joint, body joint, and the structural hardware that ties them together — everything needed to get that leg moving again.
Because Unitree builds the left and right thigh differently, this assembly is sold as a specific side. Confirm which leg actually needs replacing before you order, since the two sides aren’t interchangeable — and if you’re running a B2-W rather than a standard B2, check with xBoom first, as fitment there isn’t confirmed.
Complete Joint Set
Thigh, calf, and body joints arrive together as one part, so there’s nothing extra to source separately.
Precision Engineered
Machined joints restore smooth, stable motion instead of a rough or uneven gait.
High-Strength Build
Materials are chosen for repeated, demanding motion in industrial and field conditions.
Correct-Side Fit
Ordered as a specific left or right leg, so it matches the B2’s actual mirrored design.
See Every Detail
Why Left and Right Aren’t the Same Part
Look closely at the hip motor housing and thigh curve, and the reason for a left/right split becomes clear: Unitree mirrors the thigh geometry by side to keep the B2’s gait balanced. That’s also why this assembly ships as one specific side rather than a universal part — get the side right, and the fit is exact.
Everything a Damaged Leg Needs, in One Part
The Unitree B2 Single Leg Assembly is built to restore a damaged leg to full, factory-matched performance.
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Complete Thigh, Calf & Body Joints
One part covers the whole leg, so there’s no need to source individual joints separately.
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Precision-Engineered Movement
Tight tolerances keep the leg’s motion smooth, stable, and accurate under load.
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High-Strength Materials
Built to hold up under the repeated stress of industrial and field-duty walking.
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Correct Left/Right Fit
Ordered by side, so the mirrored thigh geometry lines up exactly as designed.
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Direct, Seamless Integration
Designed to mount straight onto the B2’s existing leg attachment points.
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Restores Balance & Mobility
Brings a damaged leg back to reliable, even movement across the robot’s full stride.
Built for Teams Recovering a B2 After Hard Use
The Unitree B2 Single Leg Assembly suits operators repairing a unit after a fall, collision, or heavy-duty deployment, not routine upkeep alone.
Industrial Inspection Fleets
Get a damaged unit back on all four legs without a long repair turnaround.
Research & Robotics Labs
A genuine, factory-matched part keeps test platforms consistent after repairs.
Security & Patrol Operations
Restore full mobility quickly so patrol coverage doesn’t have a gap.
Heavy-Duty Field Deployment
Sites with rough terrain and falls see the most leg damage — and the most benefit here.
Fleet Maintenance After Hard Falls
A single-part fix means less diagnosis time and less risk of a mismatched repair.
Genuine Spare-Parts Stocking
Keep one on hand per side so a hard fall doesn’t mean unplanned downtime.
See the B2 Platform This Leg Assembly Restores
A replacement leg doesn’t get its own review videos, so here’s the Unitree B2 it’s built to keep moving.
Frequently Asked Questions
What does the Unitree B2 Single Leg Assembly include?
Do I need to order a specific left or right leg?
Will this fit a Unitree B2-W as well as the standard B2?
When do I need a full leg assembly instead of just a new foot pad?
Is installation straightforward?
Is pricing listed online?
The full sheet
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