Monorail Transport System (6990-1) is a Futuron LEGO set released in 1988 with 731 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Futuron sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 5 minifigures and 162 unique part types.
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Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
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Release year
1988 (38 years ago — may be retired)
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Catalog scale
731 parts listed · 162 inventory lines tracked
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Minifigures
5 in this set's inventory — verify completeness when buying used
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Build manual
No digital manual in our catalog — check the box tab or LEGO.com
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Build complexity
Large set — expect sticker sheets or multiple subassemblies; inspect photos closely
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Gray era
Pre-2004 set — may use old light/dark gray instead of bluish gray
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Shipping weight (est.)
~1,136 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
Run the completion checker, compare photos to the inventory, and check live listings for sealed pricing
Related sets in this theme
Market value
No estimate on BrickID yet
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Minifigures in Monorail Transport System
Parts in this set
162 parts · page 1 of 4 · updating…
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Antenna 1 x 4 with Rounded Top3957a · ×2 · White -
Antenna 1 x 4 with Rounded Top3957a · ×2 · Trans-Dark Blue -
Antenna 1 x 4 with Rounded Top3957a · ×4 · Black -
Antenna 1 x 4 with Rounded Top3957a · ×2 · Trans-Red -
![Bar 1 x 3 [Clip / Anti-Stud]](https://cdn.rebrickable.com/media/parts/elements/4141580.jpg)
Bar 1 x 3 [Clip / Anti-Stud]4735 · ×4 · Black -
Baseplate 16 x 323857 · ×1 · Light Gray -
Baseplate 32 x 323811 · ×1 · Light Gray -
![Battery Box, 9V Small [Complete Assembly] with '9V' Print](https://cdn.rebrickable.com/media/parts/ldraw/15/4760p01c01.png)
Battery Box, 9V Small [Complete Assembly] with '9V' Print4760c01pr0001 · ×1 · White -
![Bracket 1 x 2 - 1 x 4 [Square Corners]](https://cdn.rebrickable.com/media/parts/elements/4159314.jpg)
Bracket 1 x 2 - 1 x 4 [Square Corners]2436 · ×2 · White -
![Bracket 1 x 2 - 1 x 4 [Square Corners]](https://cdn.rebrickable.com/media/parts/elements/243626.jpg)
Bracket 1 x 2 - 1 x 4 [Square Corners]2436 · ×4 · Black -
Bracket 2 x 2 - 1 x 42422 · ×1 · Black -
Bracket 2 x 2 - 2 x 23956 · ×6 · White -
![Bracket 3 x 2 - 2 x 2 [aka Space Seat]](https://cdn.rebrickable.com/media/parts/elements/459826.jpg)
Bracket 3 x 2 - 2 x 2 [aka Space Seat]4598 · ×1 · Black -
![Bracket 3 x 2 - 2 x 2 [aka Space Seat]](https://cdn.rebrickable.com/media/parts/elements/6024078.jpg)
Bracket 3 x 2 - 2 x 2 [aka Space Seat]4598 · ×1 · White -
Brick 1 x 13005 · ×4 · White -
Brick 1 x 13005 · ×4 · Black -
Brick 1 x 23004 · ×23 · White -
Brick 1 x 23004 · ×8 · Black -
Brick 1 x 2 with Black Grill Print3004pr9981 · ×2 · White -
Brick 1 x 43010 · ×5 · White -
Brick 1 x 43010 · ×5 · Black -
Brick 1 x 63009 · ×3 · Black -
Brick 1 x 63009 · ×4 · White -
Brick 1 x 83008 · ×4 · White -
Brick 2 x 23003 · ×8 · Black -
Brick 2 x 23003 · ×4 · White -
Brick 2 x 2 Corner2357 · ×1 · Black -
Brick 2 x 2 Corner2357 · ×4 · White -
Brick 2 x 33002 · ×2 · Black -
Brick 2 x 43001 · ×1 · Black -
Brick Round 1 x 1 Open Stud3062b · ×2 · Black -
Brick Round 1 x 1 Open Stud3062b · ×4 · Trans-Red -
Brick Round 1 x 1 x 2/3 Light Bulb Cover4770 · ×1 · Trans-Red -
Brick Round 2 x 2 with Axle Hole3941 · ×12 · Black -
Brick Round 2 x 2 with Axle Hole3941 · ×2 · Light Gray -
Brick Round 2 x 2 with Axle Hole3941 · ×3 · White -
Brick Sloped 33° 3 x 23298 · ×1 · Black -
Brick Sloped 45° 2 x 1 with Bottom Pin3040b · ×4 · Black -
Brick Sloped 45° 2 x 1 with Bottom pin, with 9 Large + 3 Small Black Buttons Print3040bpr0010 · ×2 · White -
Brick Sloped 45° 2 x 23039 · ×1 · Black -
Brick Sloped 45° 2 x 23039 · ×4 · White -
Brick Sloped 45° 2 x 2 with 12 Buttons, 3 Red Lamps, Black Panel Print3039pr9996 · ×2 · White -
Brick Sloped 45° 2 x 43037 · ×2 · White -
Brick Sloped 75° 2 x 1 x 3 with Open Stud4460a · ×4 · White -
![Brick Sloped 75° 2 x 2 x 3 [Hollow Studs]](https://cdn.rebrickable.com/media/parts/elements/4143976.jpg)
Brick Sloped 75° 2 x 2 x 3 [Hollow Studs]3684 · ×2 · White -
Brick Sloped Inverted 45° 2 x 13665 · ×4 · White -
![Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]](https://cdn.rebrickable.com/media/parts/elements/366001.jpg)
Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]3660 · ×2 · White -
Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed4871 · ×2 · White