How many pieces are in the Motion Madness?

Motion Madness contains 243 pieces.

When was the Motion Madness released?

Motion Madness was released in 2003.

🏛 Inventor

Set #4090

Motion Madness

Motion Madness is a solid introduction to LEGO Technic.

Before you buy

Who it's for: Ages 7+ · Beginner build Children and young teens interested in learning basic Technic mechanisms
Build: 243 pieces · about 1.5 hours Build time is an estimate.
Price: $14.99 list price · 6.2¢ per piece
Availability: Likely retired

★★★★☆ 4.2 community rating from 9 ratings

A decent entry-level Technic set suitable for young builders. While not particularly exciting for experienced builders, it provides a good introduction to basic mechanical concepts and offers a simple, engaging building experience.

$14.99

Check price on eBay

📝 Our Take

AI-assisted editorial summary, grounded in our LEGO database and public community discussions. How we use AI

Motion Madness is a solid introduction to LEGO Technic. This set provides a fun and accessible way to explore basic gear mechanisms and movement, making it ideal for young builders eager to learn about how things work.

This set is perfect for children and beginners interested in Technic concepts. With a manageable piece count and clear instructions, it offers a rewarding building experience that's both educational and entertaining. The bright colors add to its appeal.

Skip this if you're an experienced Technic builder looking for a complex project. This set is designed for novices; consider more advanced Technic sets with intricate functions and higher piece counts for a greater challenge.

✨ New

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🧱 Building Experience

AI-assisted build estimate, grounded in our LEGO database and public community discussions. How we use AI

🧩

243

Pieces

⏱

1.5h

Estimated Build Time

📊

Beginner

Difficulty

Build Highlights:

Simple and clear instructions make it easy to follow
Introduces fundamental gear and axle concepts
Bright and colorful design enhances visual appeal
Offers interactive play with moving parts

📈 Investment Analysis

AI-assisted investment analysis, grounded in our LEGO database and public community discussions. How we use AI

↓ Price declining

C+

Investment Grade

⏳ Retired

Motion Madness, while a retired set from the Inventor theme, presents a mixed bag for investors. Its relatively low piece count and original MSRP limit its potential for significant appreciation. However, its age and the nostalgia factor associated with early Technic sets could make it a worthwhile addition to a niche collection. The falling price trend suggests caution, as the market may be saturated or demand is waning. Investors should monitor its price and consider its rarity and completeness before making a decision.

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

📖 About This Set

Is it a bird? A plane? No, it’s a LEGO model! Build a Motion Madness creation and watch it fly up a string or ride a bike across the floor! Invent whatever you choose, then set the wheels in motion as you place the creation on a string or wire and watch it go.

The special Idea Book included feaures full instructions for 6 models and inspiration for 9 more!

The Idea Book included with this set will bring hours of fun, with detailed step by step building instructions for 6 great models. Once you have mastered these, there are another 9 idea starters to inspire even more creative building with this Inventor Set!

Enter a whole new dimension of building with LEGO Inventor Sets! Construct wild creations of your own that really move, and then watch them go! Each LEGO Inventor Set features a wide assortment of elements in different shapes and colors, plus inspiration for many different models! Build whatever you like, however you like, and make it move, roll, or fly down a wire -- then take it apart and build it again. Combine sets and create totally unique models that are yours alone.

All Inventor Sets feature:

At least 6 full building instructions for cool models that move
Unique elements and new LEGO brick colors
Three levels of building fun -- Quick Build, Experienced Build, and Advanced Build

Imagine it.. build it.. and make it move!

⚖ Compare Similar Sets

Motion Madness is a basic Technic set designed for beginners. Compared to more advanced Technic sets, it lacks complexity and sophisticated functions. However, it serves as a great starting point for young builders interested in learning about gears and axles. Alternatives include newer entry-level Technic sets that may offer more modern building techniques and features, but this set's simplicity might be preferred by some.

📦 Parts Inventory

Official piece count: 243
Parts cataloged in this inventory: 78 unique parts, 243 pieces

Missing a piece? Check this set piece by piece, with look-alike colors flagged and element IDs for replacements.

String Cord Mediu...

Part #: 14728c487 1× Red

Tile Special 1 x ...

Part #: 2412b 2× Blue

Tile Special 1 x ...

Part #: 2412b 2× Yellow

Plate 2 x 2 Corner

Part #: 2420 2× Yellow

Plate 2 x 2 Corner

Part #: 2420 2× Black

Plate 2 x 2 Corner

Part #: 2420 2× Medium Blue

Technic Brick 1 x...

Part #: 2730 2× Blue

Technic Slope Lon...

Part #: 2744 2× Yellow

Technic Pin with ...

Part #: 2780 7× Black

Lever Small Base ...

Part #: 298c02 3× White

Part #: 3009 2× Black

Brick 1 x 4

Part #: 3010 1× Blue

Plate 2 x 4

Part #: 3020 6× Medium Blue

Plate 2 x 4

Part #: 3020 1× Black

Plate 2 x 3

Part #: 3021 3× White

Plate 2 x 2

Part #: 3022 8× Black

Plate 1 x 2

Part #: 3023 6× Medium Blue

Plate 1 x 2

Part #: 3023 4× Black

Plate 1 x 1

Part #: 3024 4× White

Plate 2 x 8

Part #: 3034 1× Medium Blue

Brick Sloped 18° ...

Part #: 30363 2× Blue

Brick Sloped 45° ...

Part #: 3039 1× Blue

Brick Sloped 45° ...

Part #: 3040b 2× Blue

Tile 2 x 2 with G...

Part #: 3068b 1× Medium Blue

Plate Special 3 x...

Part #: 3176 1× Blue

Technic Axle and ...

Part #: 32013 1× White

Technic Axle and ...

Part #: 32014 4× Blue

Technic Axle and ...

Part #: 32016 4× Medium Blue

Technic Axle and ...

Part #: 32034 4× White

Technic Axle Conn...

Part #: 32039 1× Black

Technic Axle 2 No...

Part #: 32062 8× Black

Technic Brick 1 x...

Part #: 32064c 7× Blue

Technic Brick 1 x...

Part #: 32064c 2× Yellow

Technic Axle and ...

Part #: 32126 4× Light Gray

Technic Gear 12 T...

Part #: 32270 2× Light Gray

Large Figure Weap...

Part #: 32551 1× Yellow

Technic Pin Long ...

Part #: 32556a 4× Light Gray

Brick Sloped 33° ...

Part #: 3298 2× Blue

Plate 1 x 8

Part #: 3460 2× Yellow

Wheel with Split ...

Part #: 3482 1× White

Plate 1 x 3

Part #: 3623 2× White

Technic Gear 24 T...

Part #: 3648b 1× Light Gray

Technic Gear 40 T...

Part #: 3649 1× Light Gray

Part #: 3666 4× Medium Blue

Technic Pin witho...

Part #: 3673 3× Light Gray

Technic Brick 1 x...

Part #: 3700 2× Medium Blue

Technic Brick 1 x...

Part #: 3700 2× Yellow

Technic Brick 1 x...

Part #: 3701 4× Blue

Technic Axle 4

Part #: 3705 6× Black

Technic Axle 6

Part #: 3706 2× Black

Technic Axle 8

Part #: 3707 1× Black

Plate 1 x 4

Part #: 3710 2× Black

Plate 1 x 4

Part #: 3710 6× Yellow

Technic Bush

Part #: 3713 4× Light Gray

Brick Sloped Inve...

Part #: 3747a 2× Blue

Part #: 3795 2× Medium Blue

Part #: 3941 4× Yellow

Cone 2 x 2 x 2, O...

Part #: 3942c 1× Yellow

Plate Round 2 x 2...

Part #: 4032a 2× White

Brick Special 1 x...

Part #: 4070 2× Blue

Technic Beam 1 x ...

Part #: 41677 2× Medium Blue

Brick Wedged, Cur...

Part #: 41764 2× Medium Blue

Brick Wedged, Cur...

Part #: 41765 2× Medium Blue

Brick Sloped 33° ...

Part #: 4286 2× Black

Brick Sloped 33° ...

Part #: 4286 2× Yellow

Brick Sloped Inve...

Part #: 4287a 2× Blue

Technic Axle Pin ...

Part #: 43093 8× Blue

Plate 1 x 10

Part #: 4477 2× Blue

Tyre with Centre ...

Part #: 44799 1× Black

Technic Axle 3

Part #: 4519 4× Light Gray

Brick 1 x 10

Part #: 6111 1× Black

Plate Round 1 x 1...

Part #: 6141 2× Black

Plate Round 1 x 1...

Part #: 6141 2× White

Technic Axle and ...

Part #: 6536 2× Dark Gray

Technic Pin Long ...

Part #: 6558 2× Black

Technic Axle 3 wi...

Part #: 6587 2× Dark Gray

Technic Pin with ...

Part #: 6628 2× Black

Rubber Band Mediu...

Part #: 71156 4× Black

Hinge Plate 1 x 4...

Part #: 73983 2× Blue

This set includes a variety of Technic axles, pins, and connectors in blue and black, providing a good starting point for building simple mechanical models. While not particularly rare, the quantities of these parts are useful for MOC builders looking to experiment with basic Technic functions.