LEGO Technic BASH! 42073 Building Kit (139 Pieces) | Pull-Back Race Car with Engine Pop-Out

Experience fast, hands-on building with LEGO Technic BASH! 42073

Discover a rugged, high-energy race car model designed for action and creativity. This 139-piece Technic set features a bold red, black, and gray color scheme, racing stickers, a sturdy front bumper, a large rear spoiler, and wide rims with low-profile tires. The pull-back motor delivers quick bursts of momentum, while the engine pops out on impact for added drama during play. The design invites tactile building sessions and fast, on-table action without sacrificing the satisfaction of a detailed build.

For expanded play options, the BASH! model pairs with LEGO Technic 42072 WHACK! to form the WHACK! ‘N’ BASH! combo, unlocking two pop-out engines and a wider range of crash-and-race scenarios. The main model measures around 7 cm high, 17 cm long and 9 cm wide, while the combined WHACK! pairing grows the footprint to about 9 cm high, 20 cm long and 10 cm wide, offering a tangible sense of scale as you chase and collide the toy car through imaginative tracks.

What you build and how it feels

The build emphasizes a fast car silhouette with functional play features. A pull-back motor lets you launch the car with a simple push, and the engine pop-out on impact adds a satisfying reveal that enhances quick, kinetic play moments. The front bumper and rear spoiler contribute to the car’s bold, race-inspired presence on any table or shelf.

• Build a fast car with a pull-back motor, sturdy front bumper, large rear spoiler, and wide rims with low-profile tires.
• Engine pop-out on impact adds a satisfying, kinetic moment during play.
• Main model measures about 7 cm high, 17 cm long and 9 cm wide; combi model about 9 cm high, 20 cm long and 10 cm wide.
• 139 pieces – ideal for ages 7–14 and hands-on building fun.
• Comes from LEGO Technic, compatible with other LEGO sets for creative expansion.

Play possibilities and display

The set shines when used as a starting point for ongoing racing stories. Its compact size fits on desks or shelves, while the WHACK! integration provides extended play opportunities, enabling two engines to pop out for extra action beyond a single build.

• Pair with 42072 WHACK! to create the WHACK! ‘N’ BASH! combo for added action.
• Keep building with other LEGO Technic and LEGO System sets to deepen your creative scenarios.

LEGO Technic sets are designed to be compatible with other LEGO construction systems, supporting versatile, ongoing creative exploration. This BASH! model emphasizes action-friendly play and constructive exploration, presenting possibilities rather than promises—encouraging curious minds to imagine speed, impact, and combo-driven storytelling.