Set Facts
- Kai’s Dragon Mech features posable legs, large wings, claw hands, a 360-degree rotating upper body, and a cockpit for a minifigure.
- The set includes 3 minifigures: Kai with two swords, Sora with two swords, and an Earth Monster with claw hands.
- The scenes that can be recreated are based on season 4 of the NINJAGO Dragons Rising TV show.
Regional Retail Prices (LEGO.com/Store)
Kai’s Dragon Mech Battle Pack Reviews
Brick Fanatics
“The 86-piece 71851 Kai’s Dragon Mech Battle Pack includes Kai, Sora and an Earth Monster with a suite of new pieces to collect for only £8.99 / $9.99 / €9.99. The dragon-resembling mech is the star of the set, mixing well with the new oversized ninja hood element.”
Brickset
“71851 Kai's Dragon Mech Battle Pack is a simple set, but one executed pretty much perfectly! While none of the minifigures are exclusive, their availability in a cheaper set is pleasing, even without Kai's tail and wings, welcome though those would be. Predictably, the Earth... More Monster is the most interesting, with its spiked head.”
Full review at brickset.com
Subtheme Analysis
Community Stats
Kai’s Dragon Mech Battle Pack currently ranks #1 out of the top most owned sets in Ninjago Dragons Rising Season 4.
About Ninjago Dragons Rising Season 4

LEGO Ninjago, also known as Ninjago: Masters of Spinjitzu, theme was introduced in 2011 and included sets that are based off of original storylines, a TV series and The LEGO Ninjago Movie, a movie based on the theme. The main premise of the Ninjago universe is based around six teenage Ninja, Kai, Jay, Cole, Zane, Nya, and Lloyd, who have been trained by their master Sensei Wu, fighting forces of evil to protect the land of Ninjago.
Dragons Rising Season 4 curently consists of 13 sets, all released this year.
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Boys, girls and fans of the NINJAGO Dragons Rising TV show ages 6 and up can enjoy hours of imaginative play with the LEGO NINJAGO Kais Dragon Mech Battle Pack (71851) building set. This playset features a dragon mech toy with posable legs, large wings, claw hands and an upper body that rotates 360 degrees, plus a cockpit to place a minifigure inside.
This great value ninja toy also comes with 3 minifigures: Kai with 2 sword accessories, Sora with 2 swords and an Earth Monster toy with clawhands, letting kids enjoy hours of adventures as they act out scenes from season 4 of NINJAGO Dragons Rising.
The LEGO NINJAGO range of building sets and adventure toys for kids includes detailed mechs, dragons and temples so fans can role-play awesome ninja action. Kids can build each playset with confidence using the LEGO Builder app zoom, rotate in 3D and track progress with easy-to-follow digital instructions. Set contains 85 pieces.
MECH TOY FOR KIDS Kais Dragon Mech Battle Pack...
Description provided by LEGO©