Hero image 0 of LEGO NINJAGO Kai’s Dragon Mech Battle Pack Building Toy for Boys, Girls, & Kids, Ages 6+ - Poseable Dragon Figure & 3 Character Minifigures for Pretend Play - Gift Idea for Birthdays - 71851, 0 of 8
Overall pick
LEGO NINJAGO Kai’s Dragon Mech Battle Pack Building Toy for Boys, Girls, & Kids, Ages 6+ - Poseable Dragon Figure & 3 Character Minifigures for Pretend Play - Gift Idea for Birthdays - 71851
Key item features
- DRAGON TOY FOR KIDS – Kids power up to fight villains with the LEGO NINJAGO Kai's Dragon Mech Battle Pack (71851) building toy for boys and girls ages 6 years old and up
- POSABLE FIGURE WITH ACTION FEATURES – The dragon has posable legs, large wings, claw hands and an upper body that rotates 360 degrees, plus a cockpit to place a minifigure inside
- 3 NINJAGO MINIFIGURES – Includes Kai, Sora and a villainous Earth Monster so kids can play out action-packed good vs. evil battles
- ACCESSORIES FOR PRETEND PLAY – Kai has 2 swords, Sora has 2 swords and the Earth Monster has claw hands, all perfect for helping builders play out scenes from season 4 of the NINJAGO Dragons Rising TV show
- GIFT FOR GIRLS & BOYS – Makes a fun birthday gift or anytime present for kids who love ninja toys and action figures
- A FUN WAY TO BUILD – The LEGO Builder app includes digital tools that make it easy for kids to save sets, track progress and zoom in and rotate models using 3D instructions
- DIMENSIONS – This 85-piece toy building set features a dragon standing over 3.5 in. (9 cm) high
Specs
- BrandLEGO
- ThemeLEGO Ninjago
- Piece count85
- Minimum recommended age6 years
- FeaturesCollectible
- CharacterKai, Sora, Earth Monster
Current price is USD$9.99
Price when purchased online
Out of stock
How do you want your item?
Out of stock
Similar items you might like
Based on what customers bought
Best seller LEGO NINJAGO Kai's Motorcycle Speed Race Building Toy for Kids - Pretend Play Motorcycle Toy With 2 Minifigures - Building Blocks for Boys & Girls, Ages 6 - Gift Idea for Birthdays - 71838 $9.97
Best seller
$997current price $9.97LEGO NINJAGO Kai's Motorcycle Speed Race Building Toy for Kids - Pretend Play Motorcycle Toy With 2 Minifigures - Building Blocks for Boys & Girls, Ages 6 - Gift Idea for Birthdays - 71838
2004.6 out of 5 Stars. 200 reviewsBest seller LEGO City Go-Karts and Race Drivers Toy Playset - 2 Driver Minifigures, Race Car Toy for Boys & Girls, Ages 5 - Gift Ideas for Birthday - 60400 $8.99 Was $9.99
Best seller
$899current price $8.99, Was $9.99$9.99LEGO City Go-Karts and Race Drivers Toy Playset - 2 Driver Minifigures, Race Car Toy for Boys & Girls, Ages 5 - Gift Ideas for Birthday - 60400
9804.7 out of 5 Stars. 980 reviews100+ bought since yesterday LEGO Sonic the Hedgehog Sonic: Speedster Lightning Race Car Toy for Boys & Girls - Toy Building Set W/Sonic Minifigure for Kids & Gamers, Ages 7 - Gift Idea for Birthdays - 77117 $9.97
100+ bought since yesterday
$997current price $9.97LEGO Sonic the Hedgehog Sonic: Speedster Lightning Race Car Toy for Boys & Girls - Toy Building Set W/Sonic Minifigure for Kids & Gamers, Ages 7 - Gift Idea for Birthdays - 77117
1834.7 out of 5 Stars. 183 reviewsBest seller LEGO Star Wars The Mandalorian & Grogu's Speeder Bike - Building Toy for Boys & Girls, Ages 6 - Great Gift for Kids - W/ 2 Star Wars Figures - 75436 $9.97
Best seller
$997current price $9.97LEGO Star Wars The Mandalorian & Grogu's Speeder Bike - Building Toy for Boys & Girls, Ages 6 - Great Gift for Kids - W/ 2 Star Wars Figures - 75436
1254.8 out of 5 Stars. 125 reviews100+ bought since yesterday LEGO Minecraft The Illager Desert Patrol Toy Figures and Playset - Building Minecraft Toy for Kids, Boys and Girls, Ages 7 - with 4 Figures for Pretend Play - Gift Idea for Birthdays - 21267 $11.99 Was $14.00
100+ bought since yesterday
2 optionsAvailable in additional 2 options$1199current price $11.99, Was $14.00$14.00LEGO Minecraft The Illager Desert Patrol Toy Figures and Playset - Building Minecraft Toy for Kids, Boys and Girls, Ages 7 - with 4 Figures for Pretend Play - Gift Idea for Birthdays - 21267
17234.7 out of 5 Stars. 1723 reviewsBest seller LEGO NINJAGO Zane's Battle Suit Mech Ninja Toy - Building Toy for Pretend Play for Kids, Boys and Girls, Ages 6 - with 3 Minifigures - Gift Idea for Birthdays - 71827 $9.86
Best seller
$986current price $9.86LEGO NINJAGO Zane's Battle Suit Mech Ninja Toy - Building Toy for Pretend Play for Kids, Boys and Girls, Ages 6 - with 3 Minifigures - Gift Idea for Birthdays - 71827
3604.7 out of 5 Stars. 360 reviewsBest seller LEGO Marvel Spider-Man Mech vs. Anti-Venom Building Toy Set - Spider-Man Toy for Kids, Boys and Girls, Ages 6 - Buildable Action Figure - Superhero Gift for Birthday - 76308 $12.99
Best seller
2 optionsAvailable in additional 2 options$1299current price $12.99LEGO Marvel Spider-Man Mech vs. Anti-Venom Building Toy Set - Spider-Man Toy for Kids, Boys and Girls, Ages 6 - Buildable Action Figure - Superhero Gift for Birthday - 76308
7064.7 out of 5 Stars. 706 reviews100+ bought since yesterday LEGO Creator 3 in 1 Wild Animals Surprising Spider Toy - Building Toy with 3 Build Options, Spider, Scorpion, or Snake - Animal Figures for Kids, Boys & Girls, Ages 7 - Birthday Gift Idea - 31159 $8.99 Was $12.88
100+ bought since yesterday
2 optionsAvailable in additional 2 options$899current price $8.99, Was $12.88$12.88LEGO Creator 3 in 1 Wild Animals Surprising Spider Toy - Building Toy with 3 Build Options, Spider, Scorpion, or Snake - Animal Figures for Kids, Boys & Girls, Ages 7 - Birthday Gift Idea - 31159
20924.7 out of 5 Stars. 2092 reviewsBest seller LEGO Minecraft The Warden Encounter Kids Toy - Collectible Building Set for Boys and Girls 7 - With Silent Ranger Minifigure - Great Birthday Gift for Gamers and Kids Who Love Minecraft Toys - 21274 $19.97
Best seller
$1997current price $19.97LEGO Minecraft The Warden Encounter Kids Toy - Collectible Building Set for Boys and Girls 7 - With Silent Ranger Minifigure - Great Birthday Gift for Gamers and Kids Who Love Minecraft Toys - 21274
6924.7 out of 5 Stars. 692 reviewsBest seller LEGO Minecraft Steve’s Taiga Adventure Building Toy for Boys & Girls - Video Game Playset & Toy Figures for Kids, Ages 6 - W/2 Minifigures & 2 Pretend Play Animals - Gift Idea for Birthdays - 21583 $9.97
Best seller
$997current price $9.97LEGO Minecraft Steve’s Taiga Adventure Building Toy for Boys & Girls - Video Game Playset & Toy Figures for Kids, Ages 6 - W/2 Minifigures & 2 Pretend Play Animals - Gift Idea for Birthdays - 21583
1204.8 out of 5 Stars. 120 reviewsBest seller LEGO Friends Ice Cream & Balloon Stand Building Toy for Girls & Boys - Pretend Play Set for Kids, Ages 6 - W/Liann & Paisley Minidolls & Accessories - Gift Idea for Birthdays - 42692 $7.37 Was $9.97
Best seller
$737current price $7.37, Was $9.97$9.97LEGO Friends Ice Cream & Balloon Stand Building Toy for Girls & Boys - Pretend Play Set for Kids, Ages 6 - W/Liann & Paisley Minidolls & Accessories - Gift Idea for Birthdays - 42692
544.7 out of 5 Stars. 54 reviewsLEGO F1 Collectible Race Cars - Limited Edition Model Car Building Kit - Mystery Box for Fans of Formula 1 and Kids, Boys, and Girls, Ages 6 - Collectible Gift Idea - 71049 $10.50
$1050current price $10.50LEGO F1 Collectible Race Cars - Limited Edition Model Car Building Kit - Mystery Box for Fans of Formula 1 and Kids, Boys, and Girls, Ages 6 - Collectible Gift Idea - 71049
3604.2 out of 5 Stars. 360 reviewsBest seller LEGO City EV Supercar Building Toy for Kids - Pretend Play Set for Boys & Girls, Ages 5 - Sports Car Toy W/Driver Minifigure - Gift Idea for Birthdays - 60486 $9.97
Best seller
$997current price $9.97LEGO City EV Supercar Building Toy for Kids - Pretend Play Set for Boys & Girls, Ages 5 - Sports Car Toy W/Driver Minifigure - Gift Idea for Birthdays - 60486
694.6 out of 5 Stars. 69 reviewsBest seller LEGO Marvel Spider-Man vs. Ghost Rider Motorcycle Building Toy for Boys & Girls, Ages 6 - Super Hero & Villain Playset W/2 Marvel Minifigures - Gift Idea for Kids & Fans - 76335 $9.97
Best seller
$997current price $9.97LEGO Marvel Spider-Man vs. Ghost Rider Motorcycle Building Toy for Boys & Girls, Ages 6 - Super Hero & Villain Playset W/2 Marvel Minifigures - Gift Idea for Kids & Fans - 76335
1584.8 out of 5 Stars. 158 reviews100+ bought since yesterday LEGO Star Wars: The Clone Wars Captain Rex Y-Wing Microfighter Building Set, Collectible Star Wars Y-Wing Toy for Kids with Captain Rex Minifigure, Star Wars Gift for Boys & Girls Ages 6 and Up, 75391 $8.99 Was $12.99
100+ bought since yesterday
2 optionsAvailable in additional 2 options$899current price $8.99, Was $12.99$12.99LEGO Star Wars: The Clone Wars Captain Rex Y-Wing Microfighter Building Set, Collectible Star Wars Y-Wing Toy for Kids with Captain Rex Minifigure, Star Wars Gift for Boys & Girls Ages 6 and Up, 75391
10584.7 out of 5 Stars. 1058 reviewsBest seller LEGO Marvel Spidey And His Amazing Friends Spidey on his Motorcycle vs. Rhino Building Toy for Kids - Super Hero Pretend Playset for Preschool Boys & Girls, Ages 4 - Gift Idea for Birthdays - 11206 $9.99
Best seller
$999current price $9.99LEGO Marvel Spidey And His Amazing Friends Spidey on his Motorcycle vs. Rhino Building Toy for Kids - Super Hero Pretend Playset for Preschool Boys & Girls, Ages 4 - Gift Idea for Birthdays - 11206
304.9 out of 5 Stars. 30 reviewsBest seller LEGO Marvel Iron Man Mech vs. Ultron Building Toy Set - Iron Man Toy for Kids, Boys and Girls, Ages 6 - Buildable Action Figure - Superhero Gift for Birthday - 76307 $14.97
Best seller
$1497current price $14.97LEGO Marvel Iron Man Mech vs. Ultron Building Toy Set - Iron Man Toy for Kids, Boys and Girls, Ages 6 - Buildable Action Figure - Superhero Gift for Birthday - 76307
3774.6 out of 5 Stars. 377 reviewsBest seller LEGO Star Wars Plo Koon’s Jedi Starfighter Microfighter Kids Toy - Building Toy for Pretend Play - Clone Wars Playset and Room Decor for Boys and Girls, Ages 6 - Birthday Gift Idea - 75400 $14.97
Best seller
2 optionsAvailable in additional 2 options$1497current price $14.97LEGO Star Wars Plo Koon’s Jedi Starfighter Microfighter Kids Toy - Building Toy for Pretend Play - Clone Wars Playset and Room Decor for Boys and Girls, Ages 6 - Birthday Gift Idea - 75400
4314.6 out of 5 Stars. 431 reviewsBest seller LEGO NINJAGO Lloyd's Green Forest Dragon Toys - Pretend Play Building Toys for Boys & Girls, Ages 6 - Dragon Figurine W/ 2 Minifigures for Kids - Gift Ideas for Birthdays - 71829 $19.96
Best seller
$1996current price $19.96LEGO NINJAGO Lloyd's Green Forest Dragon Toys - Pretend Play Building Toys for Boys & Girls, Ages 6 - Dragon Figurine W/ 2 Minifigures for Kids - Gift Ideas for Birthdays - 71829
4654.7 out of 5 Stars. 465 reviews100+ bought since yesterday LEGO Speed Champions 2 Fast 2 Furious Honda S2000 Car Toy for Kids, Boys, and Girls, Ages 9 - Gift for Birthdays for Race Car and Movie Fans - Includes Suki Minifigure - 77241 $26.95
100+ bought since yesterday
$2695current price $26.95LEGO Speed Champions 2 Fast 2 Furious Honda S2000 Car Toy for Kids, Boys, and Girls, Ages 9 - Gift for Birthdays for Race Car and Movie Fans - Includes Suki Minifigure - 77241
33894.6 out of 5 Stars. 3389 reviews
About this item
Product details
Kids power up to fight villains with the LEGO NINJAGO Kai's Dragon Mech Battle Pack (71851) building toy for boys and girls ages 6 years old and up. Young builders prepare for epic showdowns as they build their dragon mech, complete with posable legs, large wings, claw hands and an upper body that rotates 360 degrees, plus a cockpit to place a minifigure inside. Once their build is complete, kids can recreate scenes from season 4 of the NINJAGO Dragons Rising TV show. This set includes 3 minifigures: Kai with 2 sword accessories, Sora with 2 swords and a villainous Earth Monster with claw hands, inspiring hours of pretend play good vs. evil battles. Makes a fun birthday gift or anytime present for kids who love ninja toys and action figures. The LEGO Builder app includes digital tools that make it easy for kids to save sets, track progress and zoom in and rotate models using 3D instructions. Contains 85 pieces.
- DRAGON TOY FOR KIDS – Kids power up to fight villains with the LEGO NINJAGO Kai's Dragon Mech Battle Pack (71851) building toy for boys and girls ages 6 years old and up
- POSABLE FIGURE WITH ACTION FEATURES – The dragon has posable legs, large wings, claw hands and an upper body that rotates 360 degrees, plus a cockpit to place a minifigure inside
- 3 NINJAGO MINIFIGURES – Includes Kai, Sora and a villainous Earth Monster so kids can play out action-packed good vs. evil battles
- ACCESSORIES FOR PRETEND PLAY – Kai has 2 swords, Sora has 2 swords and the Earth Monster has claw hands, all perfect for helping builders play out scenes from season 4 of the NINJAGO Dragons Rising TV show
- GIFT FOR GIRLS & BOYS – Makes a fun birthday gift or anytime present for kids who love ninja toys and action figures
- A FUN WAY TO BUILD – The LEGO Builder app includes digital tools that make it easy for kids to save sets, track progress and zoom in and rotate models using 3D instructions
- DIMENSIONS – This 85-piece toy building set features a dragon standing over 3.5 in. (9 cm) high
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.
Specifications
Brand
LEGO
Theme
LEGO Ninjago
Piece count
85
Minimum recommended age
6 years
Customer ratings & reviews
How item rating is calculated
Customer photos
Sort by |
Showing 1-3 of 12 reviews
May 13, 2026
crazytech2011
5 out of 5 stars review
Verified Purchase
I bought this lego set up for my grandson and he absolutely loves it.! the building of the legos challenged him. Where his mind is moving really fast. It helped him slow down. He loved the idea of being able to disassemble it and put it back together.Faster the second time. He loves working with his hands and he loves to be creative. So this toy was great for him.
Incentivized Review
Helpful?5XV3U6XIOL0L17086570428
Mar 17, 2026
JMG
Top Reviewer
5 out of 5 stars review
Verified Purchase
Go get this Ninjago Set
My nine-year-old had a easy time putting it together. He usually has a hard time doing Legos. The instructions for these were really easy for him. Super cool toy awesome for a Ninjago fan lover.
Helpful?5XV3U6XIOL0L17086570428
May 13, 2026
Matthew
5 out of 5 stars review
Verified Purchase
My son and I think it is awesome. The three mini figures are a bonus also. Especially the rock goblin guy.
Incentivized Review
Helpful?5XV3U6XIOL0L17086570428
