Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗

Ninjago · SET 71752

Ninja Sub Speeder

A ninja underwater speeder with wheels and a rounded cockpit. The compact build alternates chassis, blue bodywork and small fantasy-vehicle accessories.

Pieces: 356
Release year: 2021
Theme: Ninjago
Set number: 71752
LEGO recommended age: 8+
Archived regional retail price · Germany: 39.99 €

Official LEGO archive Official building instructions

Archived regional retail price in the stated market and currency. It does not establish the Italian launch price; no estimated currency conversion. Brickset ↗ · Reference checked on 22 October 2026

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Official English name verified at: LEGO English archive ↗ · Checked on 26 October 2026.

TIME TO BUILD

How long does it take to build Ninja Sub Speeder?

Individual build

A starting point for planning your build. Times for each experience level are editorial estimates, not measurements submitted by HowLongToBuild users.

Editorial estimate · first build

Beginner

≈ 2 h 45 minSuggested range1 h 30 min – 4 h 45 min

Intermediate

≈ 2 hSuggested range1 h – 3 h 15 min

Experienced

≈ 1 h 15 minSuggested range45 min – 2 h 15 min

Based 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

Editorial assessment: A ninja underwater speeder with wheels and a rounded cockpit. The compact build alternates chassis, blue bodywork and small fantasy-vehicle accessories. The rounded section rises between the two pairs of wheels. A first build following the instructions, including normal piece finding; an adult may help when needed. Breaks, subsequent play and any alternative models are excluded. For older sets, unnumbered bags or previously mixed pieces may prolong sorting. No verified timed build: indicative values with substantial variation.

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 · set-specific instructions ↗
Official name, pieces, age and imagery; no timed building data.
LEGO · set manual ↗
Document for this set number. The duration is an editorial estimate, not a LEGO timing.

Checked: 26 October 2026 · Method v1.0 · Limited reports; not a statistical average.

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MAKE ROOM FOR YOUR NEXT BUILD

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?

The model, the history, the ideas

Inside the set

Four large wheels

Pale rims contrast with the blue and gold-coloured structure.

LEGO source

A central cockpit

The rounded section rises between the two pairs of wheels.

LEGO source

Beyond the set

The stories, places and inventions behind your build.

Robots tethered to a ship

Real ROVs are underwater robots controlled from the surface through a cable carrying commands and data.

Read the full story

The tether carries commands down and data, including live video, back to the ship. Some systems use a higher companion vehicle to absorb ship movement. The connection is part of the control, power and observation system rather than merely a visible restriction.

NOAA Ocean Exploration

Hands on the seabed

Manipulator arms collect geological and biological samples without sending a person inside the vehicle.

Read the full story

ROV manipulators can collect biological and geological samples into onboard containers while pilots guide work using camera views. Exploration can therefore connect observations with physical material, allowing scientists to study encounters without being on the seafloor themselves.

NOAA Ocean Exploration

Expanded stories updated on 29 October 2026

Written by HowLongToBuild · Sources are linked with each story · Checked on 26 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.

TV series

LEGO Ninjago: Masters of Spinjitzu

2011

Another adventure in the same universe, for before or after your build.

Find streaming services · Italy ↗

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.

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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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SET THE MOOD

A soundtrack for your build

· Selected for the subject and atmosphere

Howard Shore’s orchestral writing offers an epic, travelling character. It suits imagined landscapes and architecture without conflating different fictional universes.

OUR PICK

The Lord of the Rings: The Fellowship of the Ring - The Complete Recordings

Howard Shore

Narrative and cinematic

Spotify ↗Apple Music ↗

Your listening moodChoose a different soundtrack

Editorial 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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