Beginner
≈ 2 h 30 minSuggested range1 h 30 min – 3 h 45 min
Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗
Ninjago · SET 71808
Kai's Elemental Fire Mech
Kai’s mech combines armour, a cockpit and a large sword. Articulated arms and legs make choosing a pose part of completing the model.
- Pieces
- 322
- Release year
- 2024
- Theme
- Ninjago
- Set number
- 71808
- LEGO recommended age
- 7+
- LEGO retail price · Italy
- 29.99 €
Available at LEGO Italy when checked on 23 October 2026. Availability can change. Check the store for the latest information.
Retail price reported by the LEGO source for the stated market. Check the store for current price and availability; this does not establish the launch price. LEGO ↗ · Reference checked on 23 October 2026
Official English name verified at: LEGO English catalogue ↗ · Checked on 24 October 2026.
TIME TO BUILD
How long does it take to build Kai's Elemental Fire Mech?
A starting point for planning your build. Times for each experience level are editorial estimates, not measurements submitted by HowLongToBuild users.
Editorial model estimate · no verified measured building time
Intermediate
≈ 1 h 30 minSuggested range45 min – 2 h 15 minExperienced
≈ 45 minSuggested range15 min – 1 h 15 minBased on one person building the set for the first time, following the original instructions and using numbered bags where supplied. Includes normal piece-finding and minor adjustments; excludes long breaks, filming, dismantling and modifications. Sources may use different methods. This range is neither a statistical interval nor a limit: your build may take less or more time.
How we estimate times · sources and method
Symmetry and joints require distinguishing left from right. The estimate includes the complete mech and an initial pose. The three central durations are model-specific editorial assessments. Planning ranges extend approximately from 65% to 145%, rounded to quarter-hours; they are not measured experience-level averages or guaranteed limits.
Sources do not always specify the builder’s experience. The three experience bands are our editorial assessment, based on the complexity of the set and individual accounts where available.
- LEGO Italy · Kai's Elemental Fire Mech ↗
This source documents the model’s features and components, not a timed build. No sufficiently verifiable individual building-time report has been identified for this set.
- LEGO building instructions · Kai's Elemental Fire Mech ↗
Set-specific instructions checked against the set number, piece count and year. The duration is an editorial assessment based on piece count, construction type, mechanisms and detail.
Checked: 23 ottobre 2026 · Method v1.0 · Limited reports; not a statistical average.
BUILT BY THE COMMUNITY
Yours could be the first building time.
0 reviewed solo building times.
No solo building times have been reviewed yet. You can still find editorial estimates under Suggested times.
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How much display space does it need?
Assembled-model dimensions are not yet documented for this set. Box dimensions cannot tell you how much display space it needs.
BEYOND THE BRICKS
Did you know?
Inside the set
A body to recombine
The limbs and torso detach and are compatible with parts from the other customisable mechs specified by LEGO, sold separately.
LEGO sourceThe ninja climbs aboard
A cockpit holds the minifigure, while a large golden sword completes the robot’s silhouette.
LEGO sourceBeyond the set
The stories, places and inventions behind your build.
A gorilla as an engineering reference
JPL developed RoboSimian for a DARPA disaster-response challenge, taking a gorilla as its animal analogue.
Read the full story
Its four limbs support both movement across difficult terrain and object manipulation. The form serves practical tasks: crossing obstacles and working in damaged environments. Real robotics can therefore look beyond the human silhouette for useful solutions.
Movement begins with perception
Seven stereo-camera pairs and a LiDAR sensor let RoboSimian map its surroundings in three dimensions.
Read the full story
Articulated limbs alone cannot solve movement across complicated terrain: the robot also needs information about what surrounds it. The project makes perception as important as the conspicuous four-limbed mechanism.
Expanded stories updated on 29 October 2026
Written by HowLongToBuild · Sources are linked with each story · Checked on 23 October 2026. Historical facts and story details refer to the context described.
BEYOND THE BRICKS
Keep the story going
Films, series, games, books and music connected to this model or its universe.
LEGO Ninjago: Dragons Rising
Another adventure in the same universe, for before or after your build.
Title search on JustWatch: choose the result matching the title and year above.Streaming: Italian catalogue. Check availability, languages and terms on the external service. Searches are labelled; book results may include different editions.
Suggest a work or report a wrong connection →THE COMMUNITY’S EXPERIENCE
What was it like to build?
Three separate scores from 1 to 10. For difficulty, 1 means very easy and 10 means very difficult.
No approved ratings yet. Scores are never generated by this site or inferred from the recommended age.
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Building tips from the community
Specific steps, useful checks and sticking points. Contributions appear after moderation, in their original language. Do not upload instruction pages or personal contact details.
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Sign in to contributeSET THE MOOD
A soundtrack for your build
· Selected for the subject and atmosphere
Piano, noise and silence draw attention to sonic texture. The pairing follows unusual surfaces and suspended moods, offering something less predictable than conventional relaxing piano.
OUR PICK
Life, Life
Ryuichi Sakamoto · async
Intimate and spaciousEditorial suggestions, not official soundtracks for the set. External services may require an account or subscription; editions and availability can vary by country. Suggest another soundtrack →
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YOUR NEXT BUILD
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Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗
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