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71846 LEGO Ninjago Legends The Fire Knight Mech thumbnail image

71846 LEGO Ninjago Legends The Fire Knight Mech
Images 6Description 
71846 LEGO Ninjago Legends The Fire Knight Mech
  • The Fire Knight Mech thumbnail
  • The Fire Knight Mech thumbnail
  • The Fire Knight Mech thumbnail
  • The Fire Knight Mech thumbnail
  • The Fire Knight Mech thumbnail
  • The Fire Knight Mech thumbnail

LEGO 71846 The Fire Knight Mech is a Ninjago set currently available at retail for $119.99 and is projected to retire at the end of 2026. Current new-sealed secondary market prices range from $139 to $207, with the average above MSRP at $129. The Kai Master of Fire minifigure is exclusive to this set and is the most sought-after in the lineup.

Forecast Model

This represents the expected annual growth (CAGR) based solely on a forecast model.
LEGO 71846 The Fire Knight Mech is a Ninjago Legends set released in 2025, containing 996 pieces and 2 minifigures. The build centers on a posable, cape-wearing Fire Knight mech armed with a spear battling an ancient sea monster with movable tentacles, presented on a display base. Included minifigures are Kai with a magical sword and a fisherman with a paddle and small boat. The set is based on the Ninjago Legends Monstrosity series.

Once retired, the expected annual growth will be close to 5% after the second year, valuing the set between $140 and $145 shortly after it is retired.
Retirement risk. The Fire Knight Mech is anticipated to retire shortly across most LEGO retail markets and regional LEGO.com platforms, with a number of regions having already done so.
All regions

For Sale (New/Sealed)

This chart shows the sales listing trends of 71846 The Fire Knight Mech.
 (KR) NINJAGO 71846 Fire Knight Mech Building Set $118.01
-1.7%
(US) Official LEGO The Fire Knight Mech
BrickEconomy Choice
$119.99
(JP) 71846 NINJAGO The Fire Knight Mech 14+ Block Toy New $124.29
+3.6%
(KR) 71846 Ninjago The Fire Knight Mech NEW Product $125.00
+4.2%
(KR) 71846 Ninjago The Fire Knight Mech 996pcs Factory-Sealed $132.99
+10.8%
(US) The Fire Knight Mech from BrickLink seller premiumminifigs $134.99
+12.5%
(KR) NINJAGO 71846 The Fire Knight Mech $135.00
+12.5%
(US) The Fire Knight Mech from BrickLink seller BalancedLife $139.00
+15.8%
(US) The Fire Knight Mech from BrickLink seller bricked_out_co $140.00
+16.7%
(PL) Ninjago: The Fire Knight Mech (71846) - BRAND NEW $142.88
+19.1%
(NL) 71846 The Fire Knight Mech - [ New. ] $146.51
+22.1%
(IT) NINJAGO 71846 The Fire Knight Mech $147.22
+22.7%
(KR) 71846 Ninjago The Fire Knight Mech 996pcs Factory-Sealed $148.99
+24.2%
(JP) Ninjago Fire Knight Mech 71846 $153.45
+27.9%
Picked for your regionShow 9 more listings

Market Momentum

Bullish
As retirement gets closer, member demand is rising, so momentum is trending up.
DemandTop 8% in Ninjago
High demand and rising
12 months agoToday
Retirement popAbout typical for Ninjago
+11% value pop expected
Retires (est. end of 2026)12 months after
Outlook:7% bearish·13% neutral·80% bullish
Why it's moving, signals and outlook

The Fire Knight Mech Minifigs

The Fire Knight Mech contains 2 minifigures. All 2 minifigs are exclusive to this set.
njo0991
Fisherman
Fisherman with medium nougat hair wearing a sand green tunic and a conical hat on the back - njo0991
Exclusive
Value $9.99
njo0990
Kai Master of Fire
Kai, Master of Fire - njo0990
Exclusive
Value $42.92

Sets in Ninjago / Legends

71872 Ultra Dragon Battle

Theme / Subtheme Ninjago / Legends
Year 2026
Pieces / Minifigs 2,178 / 4
Availability Retail
71872 LEGO Ninjago Legends Ultra Dragon Battle
Retail $199.99
Available at retail

71870 The Twin Titan Mechs

Theme / Subtheme Ninjago / Legends
Year 2026
Pieces / Minifigs 1,707 / 3
Availability Retail
71870 LEGO Ninjago Legends The Twin Titan Mechs
Retail $139.99
Available at retail

71847 The Guardian Dragon

Theme / Subtheme Ninjago / Legends
Year 2025
Pieces / Minifigs 1,650 / 1
Availability Retail (Retiring soon)
71847 LEGO Ninjago Legends The Guardian Dragon
Retail $149.99
Available at retail
Retiring soon

71871 Battle at the Dragon’s Blade

Theme / Subtheme Ninjago / Legends
Year 2026
Pieces / Minifigs 1,016 / 4
Availability Retail
71871 LEGO Ninjago Legends Battle at the Dragon’s Blade
Retail $99.99
Available at retail

My Collection

The Fire Knight Mech Reviews

45 reviews
4.8
Collectors
Investors
BrickEconomy Member Review
“The Fire Knight Mech features a highly detailed, posable mech equipped with a cape and spear, engaged in battle with a sea monster. It includes two minifigures: Kai, who can be placed inside the mech's chest, and an exclusive fisherman. The set is designed for display, complete with a circular stand.”
Brickset
“NINJAGO offers no shortage of stunning mechs and 71846 The Fire Knight Mech adds another to the selection. The mech looks splendid in the stance shown on the packaging, attached to its base and fending off the sea monster, but also benefits from extensive articulation, which... More 71847 The Guardian Dragon lacked. I still narrowly favor the dragon, but the mech is far better than I expected!”
Full review at brickset.com

About Ninjago Legends

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.

Legends was introduced in 2025 and currently consists of 5 sets.
Read more
Older NINJAGO fans aged 14 and up can add to their collection of LEGO NINJAGO models with this stunning and highly detailed The Fire Knight Mech (71846) building kit. It features a dramatic scene of a cape-wearing, spear-holding mech locked in battle with an ancient monster emerging from the sea, and it will look great on display in a bedroom.

Ninja fans can also remove the model from its base to recreate stories from the NINJAGO Legends Monstrosity series. The mech has posable features and the sea monster has movable tentacles. The model also comes with 2 NINJAGO minifigures: Kai with a magical sword, who can be placed inside the mechs chest, and a fisherman with a paddle in a boat.

The rest of the LEGO NINJAGO range of sets (sold separately) includes dragons, vehicles and temples for fans to role-play adventures with their heroes. Each ninja playset can be created with the LEGO Builder app, which guides you on an easy and intuitive building adventure. Set contains 996...
Description provided by LEGO©