LEGO Kai's Dragon Mech Battle Pack (71851)

LEGO Kai's Dragon Mech Battle Pack, set number 71851, is a Ninjago set of 85 pieces with 3 minifigures, released in January 2026. Its recommended retail price was $9.99. It is due to retire in December 2027.

Specifications

Set number: 71851-1
Theme: Ninjago
Subtheme: Dragons Rising Season 4
Pieces: 85
Minifigures: 3
Exclusive minifigures: 1
Released: January 2026
Retirement date: December 2027
MSRP (USD): $9.99
MSRP (GBP): £8.99
MSRP (EUR): €9.99
MSRP (CAD): CA$12.99
Amazon price: $9.99
Amazon 90-day average: $10.63
Amazon price vs MSRP: +0.00%
BrickLink new from: $8.00
BrickLink new from vs MSRP: -19.92%
BrickLink new 6-month average: $14.99
New sold on BrickLink in 6 months: 1
BrickLink used 6-month average: $4.99
Used sold on BrickLink in 6 months: 1

Minifigures in this set

More sets in Dragons Rising Season 4

Parts in this set

Showing 12 of 20 parts.

Price tracking

StudFinder tracks Kai's Dragon Mech Battle Pack across Amazon and BrickLink and alerts you when the price falls past the discount you choose. Amazon most recently listed it at $9.99. The cheapest new BrickLink listing is $8.00. Full price history, retirement status and current deals are shown above.

How these prices are measured

The Amazon 90-day average of $10.63 is the mean of the lowest new Amazon listing for this set over the last 90 days, in US dollars. BrickLink figures are quoted for United States sellers in US dollars: "new from" is the lowest price a seller is currently asking, while the six-month averages are quantity-weighted means of the sales that actually completed on BrickLink over the last six months, drawn from 1 new and 1 used sales of this set. Each "vs MSRP" figure compares that price with this set's $9.99 recommended retail price.

Price sources

StudFinder does not sell LEGO. Every price above was observed at one of these marketplaces — follow a link to see what it costs there now.

Common questions

How much does LEGO Kai's Dragon Mech Battle Pack (71851) cost?

LEGO Kai's Dragon Mech Battle Pack launched at a recommended retail price of $9.99. Amazon most recently listed it at $9.99. The cheapest new listing on BrickLink is $8.00. That is 19.92% below its $9.99 MSRP.

Is LEGO 71851 retired?

Not yet. LEGO Kai's Dragon Mech Battle Pack is scheduled to leave production in December 2027, after which it will only be available second-hand. BrickLink sellers already list new copies from $8.00.

How many pieces does LEGO Kai's Dragon Mech Battle Pack have?

LEGO Kai's Dragon Mech Battle Pack (71851) contains 85 pieces. It also includes 3 minifigures, 1 of which appear in no other set.