How many pieces are in The Fire Knight Mech?

The Fire Knight Mech contains 997 pieces.

What age is The Fire Knight Mech recommended for?

This set is recommended for ages 14+.

When was The Fire Knight Mech released?

The Fire Knight Mech was released in 2025.

The Fire Knight Mech (Set 71846)

Name: The Fire Knight Mech
Brand: LEGO
SKU: 71846-1

The Fire Knight Mech

The Fire Knight Mech is a blazing addition to any Ninjago collection.

🏆 Best For: Perfect for Ninjago fans and those who enjoy building articulated mech models. ⏱ 4.5 hr build 🧩 997 pcs 🎂 Ages 14+

★★★★☆ 4.8 from 2 reviews

Fans appreciate the posability and striking color scheme of the Fire Knight Mech. Some find the build a bit repetitive, but overall it's considered a solid addition to the Ninjago line.

📝 Our Take

The Fire Knight Mech is a blazing addition to any Ninjago collection. This set brings the heat with its imposing design, dynamic posability, and vibrant color scheme, capturing the essence of Kai's fiery powers in brick form.

This set is perfect for Ninjago enthusiasts and mech fans of all ages. The build offers a satisfying challenge with a focus on articulation and detail, resulting in a striking display piece that's also fun to play with.

Skip this if you prefer smaller, more compact sets or are not a fan of the Ninjago aesthetic. Consider the smaller Ninjago dragon sets for a different building experience.

🧱 Building Experience

🧩

997

Pieces

⏱

4.5h

Build Time

📊

Intermediate

Difficulty

👤

14+

Ages

Build Highlights:

Intricate leg and arm articulation allows for dynamic poses.
Creative use of slopes and curved elements to create a sleek silhouette.
Incorporation of transparent orange elements to simulate fire effects.
Detailed cockpit area with space for the Kai minifigure.

📈 Investment Analysis

↓ Price declining

B+

Investment Grade

⏳ Active

The Fire Knight Mech presents a solid investment opportunity, fueled by the enduring popularity of the Ninjago theme and the inherent appeal of mechs to LEGO collectors. Its substantial piece count and the inclusion of an exclusive Kai minifigure enhance its long-term value. While the current price trend is falling, this could represent an attractive entry point for investors who believe in the set's potential for appreciation, especially as it nears retirement. Historically, Ninjago sets with unique minifigures and distinctive designs have performed well on the secondary market, suggesting a positive outlook for this set.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

📖 About This Set

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 mech’s 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 pieces.

NINJAGO® mech model – Older NINJAGO fans can add to their collection of LEGO® NINJAGO models with this highly detailed The Fire Knight Mech
Ninja display set – This dramatic scene depicting The Fire Knight Mech with a cape and spear locked in abattle with an ancient monster emerging from the sea can be displayed in your room
Interactive model – Ninja fans can remove the model from its base to stage stories from the NINJAGO® Legends Monstrosity series between the posable mech and a monster with movable tentacles
2 NINJAGO® minifigures – The model also includes ninja Kai with a blade, who can sit inside the mech’s chest, and a fisherman with a paddle in a boat to inspire extra storytelling
Premium gift for NINJAGO® fans – This modelis a high-quality gift idea for fans of NINJAGO Legends Monstrosity who want to showcase their fandom
A fun way to build – Let the LEGO® Builder app guide kids on an intuitive building adventure, where they can save sets, track progress and zoom in and rotate models in 3D while they build
A universe of ninja toys – LEGO® NINJAGO® sets let kids escape into a fantasy world of adventures with their ninja heroes
Measurements – The mech in this 996-piece building set stands over 15.5 in. (40 cm) tall when posed on the display stand with its spear