Beginner
≈ 45 minSuggested range27 min – 1 h 12 min
Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗
Ninjago · SET 71840
Rogue vs. Drix Race Car Duel
Rogue and Drix face off in two small NINJAGO race cars.
- Pieces
- 111
- Release year
- 2025
- Theme
- Ninjago
- Set number
- 71840
- LEGO recommended age
- 4+
- LEGO retail price · Italy
- 19.99 €
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 26 October 2026
Official English name verified at: LEGO English catalogue ↗ · Checked on 26 October 2026.
TIME TO BUILD
How long does it take to build Rogue vs. Drix Race Car Duel?
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
Intermediate
≈ 30 minSuggested range18 min – 48 minExperienced
≈ 21 minSuggested range12 min – 34 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
Editorial assessment of the first illustrated arrangement: Rogue and Drix face off in two small NINJAGO race cars. Timing includes both cars and accessories, with adult help if needed. A first build following the instructions, including normal piece finding; an adult may help when needed. Breaks and subsequent play are excluded. 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.
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
Two liveries
Blue and gold contrast with red and black in the illustrated scene.
LEGO sourceBoth vehicles
Timing includes both cars and accessories, with adult help if needed.
LEGO sourceBeyond the set
The stories, places and inventions behind your build.
Three colours explain the strategy
In Pirelli’s announced 2026 F1 range, white, yellow and red identify Hard, Medium and Soft respectively. The colours distinguish each compound’s role during a race weekend.
Read the full story
The 2026 P Zero range contains compounds C1 to C5, while the familiar colours identify Hard, Medium and Soft during a Grand Prix. Pirelli redesigned the sidewall graphics with a chequered-flag motif but retained this colour code for following race choices.
Two colours for rain
Green and blue distinguish Intermediate and Full Wet tyres. A pit-stop tyre change can respond to water on the circuit as well as wear and race strategy.
Read the full story
The 2026 presentation retains green for Intermediate and blue for Full Wet. It also distinguishes the unchanged eighteen-inch rim from smaller tyre dimensions for the new cars. Colour communicates tyre use, while dimensions reflect another part of the car’s technical design.
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.
LEGO Ninjago: Masters of Spinjitzu
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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A soundtrack for your build
· Selected for the subject and atmosphere
Penguin Cafe’s acoustic interlocks offer movement and returning patterns for a vehicle build. This light rhythmic choice follows the pleasure of assembling shapes and mechanisms without setting a pace for your hands.
OUR PICK
Music from the Penguin Cafe
Penguin Cafe Orchestra
Rhythmic and livelyEditorial 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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