---
product_id: 53642847
title: "Technic BASH! 42073 Building Kit (139 Pieces)"
brand: "lego"
price: "¥14347"
currency: JPY
in_stock: true
reviews_count: 8
category: "Lego"
url: https://www.desertcart.jp/products/53642847-technic-bash-42073-building-kit-139-pieces
store_origin: JP
region: Japan
---

# Engine pops out on impact Powerful pull-back motor Sturdy front bumper Technic BASH! 42073 Building Kit (139 Pieces)

**Brand:** lego
**Price:** ¥14347
**Availability:** ✅ In Stock

## Summary

> 🏁 Unleash the speed, crash with style, and build your legend!

## Quick Answers

- **What is this?** Technic BASH! 42073 Building Kit (139 Pieces) by lego
- **How much does it cost?** ¥14347 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/53642847-technic-bash-42073-building-kit-139-pieces)

## Best For

- lego enthusiasts

## Why This Product

- Trusted lego brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Custom Combo Power:** Merge with LEGO Technic 42072 WHACK! to create the ultimate WHACK! ‘N’ BASH! combo model for double the fun.
- • **Dynamic Impact Engine:** Watch the engine pop out on impact—an interactive feature that amps up the excitement.
- • **Race-Ready Performance:** Feel the thrill with a high-speed pull-back motor that launches your build into action instantly.
- • **Crash-Tested Durability:** Built tough with a sturdy front bumper and wide low-profile tires to withstand epic collisions.
- • **Creative Mastery in 139 Pieces:** Perfectly sized for ages 7-14, this set sparks creative thinking and hands-on building skills.

## Overview

The LEGO Technic BASH! 42073 is a 139-piece advanced building kit featuring a powerful pull-back motor, sturdy front bumper, and an engine that pops out on impact. Designed for kids aged 7-14, it measures 6 inches long and combines with the 42072 WHACK! set to create an extended combo model. This durable, interactive race car encourages creative play and hands-on engineering skills.

## Description

Experience the amazing power and acceleration of this rugged, high-speed LEGO Technic 42073 BASH! race car model, featuring a red, black and gray color scheme with racing stickers, sturdy front bumper, large rear spoiler and wide black rims with low profile tires. This advanced building set is equipped with a pull-back motor, and an engine pop-out function, which is activated on impact. Combine with the 42072 WHACK! pull-back model for extended play possibilities or to create the WHACK! ‘N’ BASH! combo model.

Review: Good quality - Good fun - We gave this as a gift to a 6 year old. His dad had to help him assemble it (about 20 minutes) The instructions were easy to follow and he loved the action of the engine popping out when it ran into an object, he played with it for hours. The car itself held up extremely well as it was run into objects over and over again and never lost a piece off the car. Much better quality than expected for the price.
Review: Good value, great gift for the creator in your life. - Bought this for Christmas for my nine-year-old grandson. You can't go wrong with Legos, right? Give the model extra tricks and features, and it's sure to be a hit. I especially liked that it was a kit of some substance for a reasonable price, and this one can bear out lots and lots of use and reuse. With a lot of sets, they're tiny one-hit wonders (put it together and forget it); not really worth the jacked-up price. This one doesn't fall into that category, and, man! Does it look cool!

## Features

- Build a fast car with a powerful pull-back motor, sturdy front bumper, large rear spoiler, wide black rims with low profile tires and an engine that pops out on impact
- Combine this crash car toy with the LEGO Technic 42072 WHACK! to create an awesome WHACK! ‘N’ BASH! combo model with two pop out engines
- Measures over 2-inch (7cm) high, 6-inch (17cm) long and 3-inch (9cm) wide Combi model measures over 3-inch (9cm) high, 7-inch (20cm) long and 3-inch (10cm) wide
- 139 pieces – For boys and girls between the ages of 7 and 14
- LEGO Technic building sets are compatible with all LEGO construction sets for creative building

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B075R17LPY |
| Additional Features | Non Toxic |
| Age Range Description | 84 months to 168 months |
| Best Sellers Rank | #260,863 in Toys & Games ( See Top 100 in Toys & Games ) #8,143 in Toy Building Sets |
| Brand Name | LEGO |
| Color | Multicolor |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.7 out of 5 stars 3,755 Reviews |
| Educational Objective | Creative Thinking |
| Global Trade Identification Number | 00673419280471 |
| Included Components | LEGO Building Elements |
| Item Dimensions | 10.32 x 5.55 x 2.84 inches |
| Item Type Name | Building Kit Toy |
| Item Weight | 0.01 Ounces |
| Manufacturer | LEGO SYSTEM A/S |
| Manufacturer Maximum Age (MONTHS) | 168.0 |
| Manufacturer Minimum Age (MONTHS) | 84.0 |
| Manufacturer Warranty Description | No Warranty |
| Material Type | Plastic |
| Model Name | BASH! |
| Model Number | 6210337 |
| Model Year | 2018 |
| Number of Pieces | 139 |
| Size | One Size |
| Theme | Vehicle |
| UPC | 673419280471 |

## Images

![Technic BASH! 42073 Building Kit (139 Pieces) - Image 1](https://m.media-amazon.com/images/I/61zWGy22O-L.jpg)

## Questions & Answers

**Q: What can I do about a missing piece?**
A: Hey there. If you've double-checked everywhere (packaging, build, floor, etc.) and a piece hasn't appeared, don't worry! It's easy to request a replacement part. Just go to LEGO.com/Service and choose the "Bricks & Pieces" option to get started.

Kind regards,
Emily
LEGO® Service

**Q: Is a manual included? The box implies the instructions are only available online, & I'd rather not print out 50+ color pages . . .**
A: The instructions for 42073 BASH! are included, but the instructions to combine this item with 42072 WHACK! to create WHACK! 'N' BASH! are only available online

**Q: What to do if package was damaged when received?**
A: Return to Amazon for a replacement.

**Q: Is this tough enough for 13 yr old boy to play with after building?**
A: I think it would be as long as they are not overly aggressive with it. However, we bought it for my at the time 6 yr old and my 10 year old helped him put together. I don’t know how much enjoyment a 13yo will get out of it.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good quality - Good fun
*by F***G on December 26, 2019*

We gave this as a gift to a 6 year old. His dad had to help him assemble it (about 20 minutes) The instructions were easy to follow and he loved the action of the engine popping out when it ran into an object, he played with it for hours. The car itself held up extremely well as it was run into objects over and over again and never lost a piece off the car. Much better quality than expected for the price.

### ⭐⭐⭐⭐⭐ Good value, great gift for the creator in your life.
*by N***S on December 1, 2019*

Bought this for Christmas for my nine-year-old grandson. You can't go wrong with Legos, right? Give the model extra tricks and features, and it's sure to be a hit. I especially liked that it was a kit of some substance for a reasonable price, and this one can bear out lots and lots of use and reuse. With a lot of sets, they're tiny one-hit wonders (put it together and forget it); not really worth the jacked-up price. This one doesn't fall into that category, and, man! Does it look cool!

### ⭐⭐⭐⭐⭐ This is such a robust and fun toy to build & play!
*by A***R on April 22, 2018*

This is a really robust fun toy! I (as well as my 5 y.o. boy) really liked LEGO Technic Stunt Bike (42058) because that doesn't break when kids play tough unlike regular lego! So I bought both Whack (42072) & Bash (42073) for my son & his friend. It's a bit challenging to 5 Y.O., but not overwhelming. I think it's just right amount to stimulate & develop cognitive & fine motor skills for 5~8 y.o. kids. Compared to Technic Stunt Bike, this pair run farther (less resistance after the wind-up motor runs out of propulsion), although the initial acceleration is slower. Also boys love these bad-ass racers more because they have something that breaks (sort of) when crash. You know... boys smile when something runs fast but they cracks when something breaks ;) I think it's a clever idea to include a built-in controlled-breaking mechanism.

## Frequently Bought Together

- LEGO Technic BASH! 42073 Building Kit (139 Pieces)
- LEGO Technic WHACK! 42072 Building Kit with Pull Back Toy Stunt Car, Popular Girls and Boys Engineering Toy for Creative Play (135 Pieces)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-24*