Search  for anything...

LEGO Technic Monster Jam Dragon Monster Truck Toy for Boys and Girls, 2in1 Racing Pull Back Car Toys for Off Road Stunts, Kids Birthday Gift Idea, Great Activity for Kids, 42149

  • Based on 2,230 reviews
Condition: New
Checking for the best price...
$38.99 Why this price?
Save $1.00 was $39.99

Buy Now, Pay Later


As low as $9 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon

Arrives Jun 23 – Jul 8
Order within 9 hours and 49 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Features

  • Features a 2-in-1 monster truck toy set with pull-back action: this Monster Jam Dragon truck rebuilds into a Crocodile buggy racing car toy
  • The LEGO Technic monster truck toy has dragon spikes and horns, and realistic colors and stickers to create the real-life Monster Jam Monster truck
  • Kids use the pull-back feature to send the toy truck racing along, recreating cool monster truck jumps and tricks from the Monster Jam arena
  • When they're ready for the next challenge, kids can rebuild the model into a Crocodile Buggy race car off road vehicle toy with pull back action
  • The LEGO Builder app can offer kids a helping hand, where they can zoom in and rotate models in 3D, track progress and develop new skills
  • This LEGO Technic 2in1 Monster Jam set makes a great Birthday gift for kids Ages 7 plus years old and fans of Monster Jam and truck toys

Description

Children who love Monster Jam have lots to discover with this LEGO Technic Monster Jam Dragon (42149) 2in1 pull-back truck toys for kids age 7 plus years old. This toy truck model lets kids recreate favorite scenes from the Monster Jam arena. It’s time for kids to put their skills to the test with this LEGO Technic 2-in-1 Monster Jam set. First they build the monster truck toy with its fierce dragon spikes, horns and fiery details. Then pull back the motor to send it speeding along – or perform cool tricks like a real competitor! When it’s time for something new, kids can rebuild the truck into a Crocodile Monster Truck racing toy for even more fun! An easy and intuitive building adventure with the LEGO Builder app awaits. Here kids can zoom in and rotate models in 3D, save sets and track their progress. LEGO Technic buildable models feature realistic movement and mechanisms that introduce LEGO builders to the universe of engineering in an approachable and realistic way. Treat a fan of Monster Jam and off road vehicles to this LEGO Technic 2in1 Monster Jam Truck Toys set as a great gift idea for kids Ages 7+ years old. This set makes a great summer DIY building toy idea for outdoor play for boys and girls ages 7-11. This Monster Jam toy truck model measures over 4.5 in. (12 cm) high, 7 in. (19 cm) long and 4 in. (11 cm) wide. Contains 217 Pieces.

Brand Name: LEGO


Manufacturer Minimum Age (MONTHS): 84


Sub Brand: LEGO Technic


Model Name: Monster Jam™ Dragon™ 42149


Model Number: 6420676


Age Range Description: Kid


Manufacturer Maximum Age (MONTHS): 1200


UPC: 673419371186


Global Trade Identification Number: 86


Manufacturer Part Number: 6420676


Model Year: 2023


Manufacturer Warranty Description: Warranty


Included Components: LEGO Building Elements


Item Type Name: Building Kit


Manufacturer: LEGO


Unit Count: 1.0 Count


Color: Multicolor


Theme: Action,Car,Dragon,Race,Truck Toy


Subject Character: Dragon


Number of Pieces: 217


Item Dimensions: 10.32 x 5.55 x 3.58 inches


Item Weight: 0.84 Pounds


Size: Assorted


Educational Objective: Creative Thinking


Is Assembly Required: No


Operation Mode: Manual


Number of Players: 1


Material Type: Plastic


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jun 23 – Jul 8

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • LEGO Technic Monster Jam Dragon Monster Truck
The LEGO Technic Monster Jam Dragon Monster Truck is a fantastic gift that my son absolutely loves. It was easy for him to put together with minimal assistance from me, and he's had a blast playing with it since. It's a great addition to his LEGO collection and provides hours of entertainment. Highly recommended for young LEGO enthusiasts! ... show more
Reviewed in the United States on February 2, 2024 by Zach

  • Good product
As pictured and a good product.
Reviewed in the United States on November 9, 2025 by CMB

  • Grandson loved it
My grandson loved this well-made vibrant colors
Reviewed in the United States on May 19, 2026 by Dean

  • Perfect for ages 6-8
This was a hit for a 7 year old boy's birthday! The instruction wasn't too complicated yet still feels like a big boys toy. Legos in general are always an excellent gift, and this one is a good price.
Reviewed in the United States on April 9, 2024 by Stew Van

  • Wonderful Lego Kit, but not a Toy
Wonderful Lego Kit, but not a Toy like I thought it was when I purchased for my kids. they have "Monster truck jumped" it till the wheels wont stay on, and "battle damaged" and the horns and decoration stay on anymore.
Reviewed in the United States on March 18, 2025 by Tabor031

  • Love Lego
Great Build
Reviewed in the United States on January 16, 2026 by 402

  • Recommend
My grandson love
Reviewed in the United States on December 29, 2025 by yahaira Rivera

  • Cute gift
Like it
Reviewed in the United States on November 19, 2025 by MaryLou Holmes

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...