← The LEGO Parts Guide › Articulation › Joint › Ball Joint

3×3 Angle, 2-Balls, 1-Axle Hole (Part 41670)

2002-2007RETIRED

Custom LEGO part image © 2025 Tom Alphin / Brick Architect.

External Links

LEGO parts are described differently on other websites and may use different part numbers.

Bricklink:
41670 Bionicle Ball Joint 4 x 4 x 2 90 degrees with 2 Ball Joint and Axle Hole
Rebrickable:
41670 Large Figure Skeletal, Limb, Angular 90°, 4 x 4 x 2 with 2 Ball Joints, and Axle Hole
Brickset:
41670 BION. LEG, SHELL
LDraw:
41670 Technic Bionicle Leg 4 x 4 with Two Ball Joints
 ALL YEARS
OVERALL RANK
1085
# PIECES
305(RANK: 973)
# SETS
39(RANK: 1836)
# COLORS
16(RANK: 544)

Ranking based on buying one copy of every LEGO set, counting the number of sets containing each part, then sorting by part and color.

Overall Rank is a weighted score combining the number of parts, sets, and colors produced.

Printable LEGO Brick Label

4×4 Angle,
2B1A
41670
.LBX

Requires a compatible Brother Label Printer — learn more at brickarchitect.com/labels.

New Label! Not included in legacy LEGO Brick Labels collection.

Date Added: 2024-03-17 21:30:29

Subscribe for updates!

Join thousands of LEGO fans by subscribing to our monthly newsletter. It contains updates to the LEGO Parts Guide, exclusive subscriber content, and a roundup of the best LEGO news from around the web.

I give Brick Architect consent to send email using the information provided in this form.

What to expect: Brick Architect is committed to respecting your personal data and privacy, in accordance with our Privacy Policy. Please feel free to unsubscribe at any time using the link at the bottom of every email we send.

The LEGO Parts Guide is a work in progress

This is a handcrafted experience to help you browse LEGO parts in a simpler way. If you have ideas to make it better or encounter any issues, please send me an email at tom@tomalphin.com — Thanks!

Check out the About the LEGO Parts Guide page to learn more about why I created this guide. It also includes a detailed version history with images of early prototypes of this guide.


Support the LEGO Parts Guide

The LEGO Parts Guide is an extension of my LEGO Brick Labels project. If you want to support this project and gain access to behind-the-scenes updates, consider supporting the project at patreon.com.

The LEGO Parts Guide © 2025 Tom Alphin / Brick Architect.

Brick Architect earns a commission from qualifying purchases at partner sites such as LEGO.com and Amazon. (For a complete list of affiliate programs, visit About Brick Architect.)

LEGO® is a trademark of the LEGO Group which does not sponsor, authorize or endorse this site. As a member of the Recognized LEGO® Fan Media program, we abide by the LEGO Fair Play and Novelty policies by not sharing leaked photos of unreleased sets.

This guide uses external data from Rebrickable, BrickLink, Brickset, and LDraw.