LEGO TECHNIC Heavy Duty Excavator

LEGO® Technic™ Heavy-Duty Excavator (42121) – 2-in-1 Construction Toy

Looking for the perfect gift for kids who love construction toys? The LEGO® Technic™ Heavy-Duty Excavator (42121) is packed with features that inspire hours of imaginative play. Boys and girls aged 8 and up can enjoy a fun and rewarding building experience before exploring all the realistic functions of this detailed digger model.

Discover how a real excavator works

Dig, drive, and rotate – there’s so much to explore with this awesome LEGO® Technic™ excavator. Kids can raise and lower the shovel, move the arm, spin the body, and roll on working tracks. The detailed cabin features a driver’s seat and control panel for an authentic touch. The set also includes extra LEGO® brick “stones” to scoop and 4 cones to set up a construction site.

When kids are ready for something new, they can rebuild the model into a tracked tractor with a backhoe for even more creative play.

A rewarding challenge for young builders

The LEGO® Technic™ range offers advanced building sets for young LEGO® fans ready to take their building skills to the next level. With realistic movements and mechanisms, these sets are a fun introduction to the world of engineering.

Product features

• 2-in-1 construction toy: Kids can build the Heavy-Duty Excavator, then rebuild it into a tracked tractor with a backhoe.
• Packed with realistic details: Includes a working arm and shovel, rotating body, moving tracks, and a detailed operator’s cabin with control panel.
• Great for role-play: Comes with 4 cones and LEGO® brick “stones” so kids can create their own construction site.
• Perfect gift for ages 8+: Ideal for birthdays, holidays, or any occasion.
• Realistic size: Measures over 9 in. (23 cm) high with the arm raised, 14.5 in. (37 cm) long with the arm fully extended, and 4 in. (11 cm) wide.
• Learn through play: Introduces kids to engineering concepts in a fun and hands-on way.
• Reliable quality: LEGO® Technic™ pieces meet the highest industry standards for consistency and compatibility — since 1958.
• Safety tested: Each component is rigorously tested — dropped, heated, crushed, twisted, and analyzed — to meet global safety standards.