How many pieces are in the MX-81 Hypersonic Operations Aircraft?

MX-81 Hypersonic Operations Aircraft contains 795 pieces.

When was the MX-81 Hypersonic Operations Aircraft released?

MX-81 Hypersonic Operations Aircraft was released in 2008.

LEGO MX-81 Hypersonic Operations Aircraft set 7644

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🏛 Mars Mission

Set #7644

MX-81 Hypersonic Operations Aircraft

The MX-81 Hypersonic Operations Aircraft is a standout set from the Mars Mission theme.

Before you buy

Who it's for: Intermediate build Perfect for LEGO fans who enjoy building futuristic vehicles and creating imaginative space adventures.
Build: 795 pieces · about 4.5 hours Build time is an estimate.
Availability: Retired at LEGO

★★★★☆ 4.3 community rating from 63 ratings

Fans appreciate the MX-81's unique design and vibrant color scheme, praising its playability and display value. Some criticize the reliance on stickers and the relative simplicity of certain building sections.

Check price on eBay

📝 Our Take

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

The MX-81 Hypersonic Operations Aircraft is a standout set from the Mars Mission theme. Its sleek design and vibrant color scheme capture the futuristic aesthetic of space exploration, making it a visually appealing model. The inclusion of multiple minifigures and play features adds to its overall charm.

This set is perfect for LEGO enthusiasts who enjoy building vehicles and creating imaginative space adventures. The intermediate building experience provides a satisfying challenge without being overly complex. The finished model is ideal for display or engaging in creative play scenarios.

Skip this if you prefer licensed themes or highly detailed, realistic models. While the MX-81 is visually striking, its blocky design and fictional setting may not appeal to those seeking more authentic or intricate builds. Consider LEGO City Space sets for a more grounded experience.

✨ New

Ask BlockTalk about this set

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BlockTalk

Hi! I'm BlockTalk, your LEGO expert. Ask me anything about the MX-81 Hypersonic Operations Aircraft - building tips, investment potential, comparisons, or anything else!

Try asking:

How does the MX-81 Hypersonic Operations Aircraft compare to other LEGO space-themed sets in terms of design and playability? What are some creative ways to expand the Mars Mission theme with custom builds using the MX-81's parts? How has the value of the MX-81 Hypersonic Operations Aircraft changed since its retirement, and what factors might influence its future value? What are the best strategies for displaying the MX-81 Hypersonic Operations Aircraft to showcase its unique features and color scheme?

🧱 Building Experience

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

🧩

795

Pieces

⏱

4.5h

Estimated Build Time

📊

Intermediate

Difficulty

Build Highlights:

Building the complex wing structures
Assembling the landing gear and cockpit mechanisms
Incorporating Technic elements for structural integrity
Creating a visually striking model with a unique color scheme

📈 Investment Analysis

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

Not enough price history for a trend

Investment Grade

⏳ Retired

The MX-81 Hypersonic Operations Aircraft presents a moderate investment opportunity. As a retired set from the Mars Mission theme, it has a degree of nostalgia and appeal for collectors. While not as universally popular as some licensed themes, its unique design and limited availability could drive appreciation over time. However, the set's value is heavily dependent on its condition and the completeness of its parts. Potential investors should carefully assess the market demand and the set's overall condition before making a purchase.

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

📖 About This Set

Look out, aliens -- here comes the MX-81 Hypersonic Operations Aircraft! Covered with high-tech alien-fighting weaponry, the MX-81 is five incredible vehicles in one, including a mining scout rover with quick-deployment platform, twin attack cruisers with swing-out wings, a mobile flying lab, and more. Just watch out for surprise alien attack! Includes 3 astronaut minifigures and 1 glow-in-the-dark alien minifigure and a new commander alien!

⚖ Compare Similar Sets

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The MX-81 Hypersonic Operations Aircraft offers a unique building experience compared to other space-themed sets. While sets like the Space Shuttle Exploration Mission 31044-1 offer a more realistic portrayal of space travel, the MX-81 focuses on a more imaginative and futuristic design. Collectors who appreciate the retro-futuristic aesthetic of the Mars Mission theme may prefer the MX-81 over more contemporary space sets.

5 Minifigures Included

Martian, Alien Commander

Mars Astronaut, Cheek Lines

5 parts

Mars Astronaut, Orange Sunglasses, Stubble

5 parts

Mars Astronaut, Stubble

5 parts

The set includes a diverse range of minifigures, featuring both Martian aliens and Mars Astronauts. The Alien Commander is particularly notable for its unique design and detailed printing.

📦 Parts Inventory

Official piece count: 795
Parts cataloged in this inventory: 164 unique parts, 772 pieces
Minifigures: 5

The official piece count includes the 23 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.

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

Wing, Tail 4 x 1 x 3

Part #: 2340 4× White

Equipment Goblet ...

Part #: 2343 2× Light Bluish Gray

Brick 2 x 2 Corner

Part #: 2357 4× White

Tile Special 1 x ...

Part #: 2412b 8× Trans-Red

Tile Special 1 x ...

Part #: 2412b 27× Orange

Plate 2 x 2 Corner

Part #: 2420 2× Black

Tile 1 x 4 with G...

Part #: 2431 7× White

Tile Special 1 x ...

Part #: 2432 1× Red

Tile Special 1 x ...

Part #: 2432 7× White

Plate Special 2 x...

Part #: 2444 1× White

Plate 2 x 12

Part #: 2445 9× Black

Part #: 2540 4× Orange

Tile Special 1 x ...

Part #: 2555 2× White

Panel 3 x 4 x 6 C...

Part #: 2571 4× White

Plate Round 2 x 2...

Part #: 2654 1× Red

Plate Round 2 x 2...

Part #: 2654 1× Trans-Dark Blue

Technic Pin with ...

Part #: 2780 30× Black

Brick Special 1 x...

Part #: 2877 6× White

Lever Small Base ...

Part #: 298c02 4× White

Brick 2 x 4

Part #: 3001 8× Black

Brick 2 x 4

Part #: 3001 6× Light Bluish Gray

Brick 2 x 3

Part #: 3002 9× White

Brick 2 x 2

Part #: 3003 1× Red

Brick 1 x 1

Part #: 3005 4× White

Brick 2 x 10

Part #: 3006 2× White

Brick 1 x 8

Part #: 3008 2× Black

Brick 1 x 4

Part #: 3010 2× Dark Bluish Gray

Brick Round 2 x 2...

Part #: 30151a 2× Trans-Clear

Rock 1 x 1 Jewel ...

Part #: 30153 4× Trans-Neon Green

Plate 2 x 4

Part #: 3020 2× White

Plate 2 x 4

Part #: 3020 2× Orange

Plate 2 x 4

Part #: 3020 2× Black

Plate 2 x 3

Part #: 3021 9× White

Plate 2 x 2

Part #: 3022 2× Orange

Plate 1 x 2

Part #: 3023 5× Black

Plate 1 x 2

Part #: 3023 13× White

Brick Special 1 x...

Part #: 30236 6× White

Brick Special 1 x...

Part #: 30237a 2× Dark Bluish Gray

Brick Sloped Inve...

Part #: 30283 2× Black

Plate 4 x 10

Part #: 3030 1× Black

Equipment Space B...

Part #: 30304 1× Dark Bluish Gray

Plate 4 x 4

Part #: 3031 4× Blue

Plate 4 x 4

Part #: 3031 6× Black

Plate 4 x 6

Part #: 3032 3× White

Plate 2 x 8

Part #: 3034 1× Black

Plate 2 x 8

Part #: 3034 8× Blue

Tile Special 2 x ...

Part #: 30350b 2× Black

Bar 1 x 8 with Br...

Part #: 30359b 16× White

Bar 1 x 8 with Br...

Part #: 30359b 6× Black

Cylinder 3 x 6 x ...

Part #: 30360 2× White

Brick Sloped 18° ...

Part #: 30363 4× White

Brick Sloped 45° ...

Part #: 3037 1× Black

Brick Sloped 45° ...

Part #: 3039 2× White

Brick Sloped 45° ...

Part #: 3040b 2× Black

Brick Special 1 x...

Part #: 30414 6× Light Bluish Gray

Brick Special 1 x...

Part #: 30526 2× Light Bluish Gray

Plate Round Corne...

Part #: 30565 2× Lime

Brick Curved 2 x ...

Part #: 30602 3× White

Brick Sloped 2 x ...

Part #: 30603 2× Black

Brick Round 1 x 1...

Part #: 3062b 4× Trans-Red

Brick Round 1 x 1...

Part #: 3062b 10× Dark Bluish Gray

Brick Round 1 x 1...

Part #: 3062b 18× Trans-Dark Blue

Tile 2 x 2 with G...

Part #: 3068b 1× Black

Tile 2 x 2 with G...

Part #: 3068b 7× White

Tile 1 x 2 with G...

Part #: 3069b 3× Lime

Technic Brick 1 x...

Part #: 32000 4× Dark Bluish Gray

Technic Axle and ...

Part #: 32016 2× Red

Technic Brick 1 x...

Part #: 32018 8× Black

Technic Pin Long ...

Part #: 32054 14× Red

Technic Brick 1 x...

Part #: 32064b 2× Red

Technic Brick 1 x...

Part #: 32064b 6× White

Technic Axle 5

Part #: 32073 2× Light Bluish Gray

Technic Axle and ...

Part #: 32184 1× White

Technic Beam 1 x ...

Part #: 32278 9× Black

Technic Beam 1 x ...

Part #: 32524 2× Black

Technic Beam 3 x ...

Part #: 32526 2× Black

Technic Brick 6 x...

Part #: 32532 1× Black

Technic Pin Long ...

Part #: 32556 12× Tan

Plate 1 x 8

Part #: 3460 5× Blue

Plate 1 x 3

Part #: 3623 4× White

Minifig Head [Pla...

Part #: 3626b 1× White

Brick Sloped Inve...

Part #: 3660 6× White

Brick Sloped Inve...

Part #: 3660 3× Black

Plate 1 x 6

Part #: 3666 1× Dark Bluish Gray

Brick Sloped 65° ...

Part #: 3678b 2× Black

Technic Brick 1 x...

Part #: 3700 6× Black

Technic Brick 1 x...

Part #: 3701 25× Black

Technic Brick 1 x...

Part #: 3703 4× White

Technic Axle 4

Part #: 3705 1× Black

Technic Axle 12

Part #: 3708 1× Black

Technic Plate 2 x...

Part #: 3709 5× Light Bluish Gray

Plate 1 x 4

Part #: 3710 11× Blue

Technic Bush

Part #: 3713 2× Light Bluish Gray

Brick Sloped Inve...

Part #: 3747b 2× White

Brick Sloped Inve...

Part #: 3747b 2× Black

Technic Axle Pin ...

Part #: 3749 2× Tan

Plate Special 1 x...

Part #: 3794a 5× Dark Bluish Gray

Plate 2 x 6

Part #: 3795 4× White

Steering Stand 1 ...

Part #: 3829c01 1× White

Plate 2 x 10

Part #: 3832 1× Light Bluish Gray

Hinge Brick 1 x 2...

Part #: 3937 10× Light Bluish Gray

Hinge Brick 1 x 2...

Part #: 3938 9× White

Brick Round 2 x 2...

Part #: 3941 5× White

Brick Round 2 x 2...

Part #: 3941 6× Lime

Cone 2 x 2 x 2, O...

Part #: 3942c 2× White

Cone 2 x 2 x 2, O...

Part #: 3942c 2× Black

Antenna 1 x 4 wit...

Part #: 3957a 1× White

Plate 6 x 6

Part #: 3958 1× White

Weapon Gun / Torc...

Part #: 3959 2× Light Bluish Gray

Equipment Radio [...

Part #: 3962b 1× Black

Plate Round 2 x 2...

Part #: 4032a 2× Black

Large Figure Weap...

Part #: 40340 1× Black

Brick Special 1 x...

Part #: 4070 2× Black

Hinge Brick 2 x 2...

Part #: 40902 1× Light Bluish Gray

Tile Round 2 x 2 ...

Part #: 4150 6× Black

Tile 1 x 8 with G...

Part #: 4162 4× White

Brick Wedged, Cur...

Part #: 41747 1× White

Brick Wedged, Cur...

Part #: 41748 1× White

Technic Axle and ...

Part #: 42003 6× Black

Brick Curved 6 x 1

Part #: 42022 4× Black

Brick Curved Inve...

Part #: 42023 6× Black

Technic Pin 1/2 w...

Part #: 4274 24× Blue

Plate 2 x 16

Part #: 4282 1× Black

Brick Sloped 33° ...

Part #: 4286 2× White

Technic Axle Pin ...

Part #: 43093 8× Blue

Panel 1 x 4 x 1 w...

Part #: 43337 1× Black

Box 2 x 2 x 2 [Ho...

Part #: 4345b 1× Trans-Neon Green

Box 2 x 2 x 2 Doo...

Part #: 4346 1× White

Brick Wedged, Cur...

Part #: 43712 1× White

Technic Axle 7

Part #: 44294 1× Light Bluish Gray

Hinge Panel 2 x 4...

Part #: 44572 1× Trans-Red

Plate 1 x 10

Part #: 4477 2× Black

Hinge Tile 1 x 4 ...

Part #: 44822 1× White

Technic Axle 3

Part #: 4519 3× Light Bluish Gray

Brick Wedged, Cur...

Part #: 45301 1× Black

Windscreen 10 x 6...

Part #: 45705 2× Trans-Orange

Windscreen 10 x 6...

Part #: 45705 1× White

Cone 1 x 1 [No To...

Part #: 4589 7× Trans-Dark Blue

Brick Special 1 x...

Part #: 4733 1× Black

Dish 2 x 2 Invert...

Part #: 4740 1× Trans-Dark Blue

Brick Wedged, Cur...

Part #: 47406 2× Black

Brick Curved 2 x ...

Part #: 47457 5× Light Bluish Gray

Plate Special 2 x...

Part #: 47720 2× Light Bluish Gray

Wheel Arch, Curve...

Part #: 47755 2× Orange

Hinge 1 x 3 Trian...

Part #: 47973 1× Dark Bluish Gray

Plate Special 1 x...

Part #: 48336 2× Black

Bar 1L with Clip

Part #: 48729a 1× Black

Brick Curved 3 x ...

Part #: 50950 6× Black

Brick Wedged, Cur...

Part #: 50955 1× White

Brick Wedged, Cur...

Part #: 50956 1× White

Flag 5 x 6 Hexago...

Part #: 51000 1× White

Wing Plate 20 x 5...

Part #: 54093 1× White

Brick Sloped 30° ...

Part #: 54200 2× Trans-Orange

Brick Sloped 30° ...

Part #: 54200 4× Black

Technic Axle 8 wi...

Part #: 55013 1× Dark Bluish Gray

Projectile, Techn...

Part #: 57028c01 1× Light Bluish Gray

Flexible Ribbed H...

Part #: 57539 2× Black

Flexible Ribbed H...

Part #: 57539 2× Orange

Launcher, Technic...

Part #: 57796 1× Dark Bluish Gray

Equipment Martian...

Part #: 58843 1× White

Brick Round Corne...

Part #: 58846 2× Black

Cylinder 9 x 4 x ...

Part #: 58947 1× Trans-Orange

Technic Axle 5.5 ...

Part #: 59426 1× Dark Bluish Gray

Plate Special 1 x...

Part #: 6019 2× White

Plate Special 1 x...

Part #: 60470a 2× Black

Technic Engine Bl...

Part #: 61069 4× White

Wheel Hard Plasti...

Part #: 6118 4× Orange

Hinge Brick 2 x 2...

Part #: 6134 1× Light Bluish Gray

Plate Round 1 x 1...

Part #: 6141 3× White

Plate Round 1 x 1...

Part #: 6141 2× Trans-Dark Blue

Plate Round 1 x 1...

Part #: 6141 7× Lime

Plate Round 1 x 1...

Part #: 6141 32× Orange

Brick Curved 4 x ...

Part #: 61678 14× White

Plate Special 4 x...

Part #: 6179 2× White

Technic Pin Conne...

Part #: 62462 6× White

Technic Brick 1 x...

Part #: 6541 2× Black

Technic Pin Long ...

Part #: 6558 8× Blue

Brick Wedged, Ang...

Part #: 6564 1× Black

Brick Wedged, Ang...

Part #: 6565 1× Black

Technic Axle 3 wi...

Part #: 6587 2× Dark Bluish Gray

Tile 1 x 6 with G...

Part #: 6636 8× Black

Technic Rubber Be...

Part #: 85544 1× Red

Brick Curved 2 x ...

Part #: 88930 1× White

🧱 Sticker Sheet 1 f...

Part #: 63091 1× [No Color/Any Color]

🧱 Sticker Sheet 2 f...

Part #: 63430 1× [No Color/Any Color]

The parts selection in the MX-81 Hypersonic Operations Aircraft is well-suited for MOC builders, with a variety of Technic elements and a generous quantity of orange tiles. The abundance of white and black pieces provides a solid foundation for creating custom vehicles and spacecraft.

🛒 Where to Buy

eBay

Search listings

→

💎 Notable Parts

Orange Tile Special 1 x 2 Grille with Bottom Groove (27x) $4.05

Black Technic Brick 1 x 4 [3 Pin Holes] (25x) $2.50

White Bar 1 x 8 with Brick 1 x 2 Curved Top End (Axle Holder Inside Small End) (16x) $4.00

Trans-Dark Blue Brick Round 1 x 1 Open Stud (18x) $5.40

Black Technic Brick 1 x 14 [13 Pin Holes] (8x) $4.00

Est. BrickLink Part Value

$19.95

💡 MOC Potential

🚀 Alternate spacecraft designs

🚗 Futuristic ground vehicles

🤖 Large scale mech

Community Insights

Real opinions from Reddit and YouTube

What Reddit Says

No Reddit discussions found for this set.

What YouTubers Say

Based on 5 videos

3.0 /5

Mixed

0% positive

BlockTalk AI

The LEGO MX-81 Hypersonic Operations Aircraft (7644) from the Mars Mission theme receives mixed reactions from LEGO YouTubers. While reviewers like JANG's LEGO Reviews offer neutral, descriptive overviews, others, such as Super Secret Bricks, express dislike for the set, suggesting a lack of universal appeal within the LEGO community.

🔄 LEGO Mars Mission 2008 MX-81 Hypersonic Operations Aircraft review! 7644 re upload

JANG's LEGO Reviews • 3.1K views Review

LEGO review 7644: MX-81 Hypersonic Operations Aircraft (2008, Mars Mission) 🔎

Super Secret Bricks • 1.3K views Review

Community Sentiment

Based on 5 YouTube reviews

Not enough Reddit data

YouTube

3.0 /5

Mixed

0% positive

Positive

Mixed

Critical

BlockTalk AI Analysis

What the Community Says

2 YouTube reviews

BlockTalk AI Summary

Super Secret Bricks explicitly states disliking the set, while JANG's LEGO Reviews provides an unscripted review, indicating an honest, albeit neutral, assessment. The limited data suggests divided opinions, with some finding value while others express disappointment.

Reddit Reviews

No Reddit reviews found

YouTube Reviews

2 videos

🔄 LEGO Mars Mission 2008 MX-81 Hypersonic Operations Aircraft review! 7644 re upload

JANG's LEGO Reviews

3.1K views Review

LEGO review 7644: MX-81 Hypersonic Operations Aircraft (2008, Mars Mission) 🔎

Super Secret Bricks

1.3K views Review

Community Content: These reviews are from Reddit and YouTube users sharing their personal experiences. Opinions may vary.

📖 Building Instructions 2

BUILD.INST. - 7644 BOOK 1/2

Download PDF

BUILD.INST. - 7644 BOOK 2/2

Download PDF

Inventory Statistics

166

Unique Parts

795

Official Piece Count

772

Cataloged Inventory Pieces

Minifigures

Spare Parts

The official piece count includes the 23 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.

Inventory Version: 1

Missing a piece? Use the Missing Piece Checker.