Universal Building Set with Flex System (8074): parts list and STL files

Set 8074, Universal Building Set with Flex System, from 1991, has 317 pieces in 74 kinds of part and colour. Here is every part, with the ones you can 3D print at home and the ones to buy.

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Free: an STL file for every part you can print, the parts list and a BrickLink shopping list for the rest. Pro adds print-ready plates for a 256 mm bed and our printing guide. About ProYour Pro includes the print-ready plates.

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Universal Building Set with Flex System, built (3D picture) — What it looks like built. A 3D picture, not a photo, made from the LDraw model by Max Martin Richter (CC BY 2.0).

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265to print

52to buy

1spares

74kinds

265 to print, 52 to buy, 1 spare. Print: plain bricks, plates and beams you can make on a home 3D printer. Buy: clear, printed, rubber, electric and very thin parts, which are better ordered. Spares are the extras in the box.

Every part in set 8074

Parts in set 8074, Universal Building Set with Flex System
Colour	Part	Qty	Print or buy
Light Gray	4265a Bush 1/2 Toothed Type I [+ Opening]	25	Print
Black	2780 Pin with Friction Ridges Lengthwise and Center Slots	18	Print
Light Gray	2825 Beam 1 x 4 Thin with Stud Connector	15	Print
Light Gray	3713 Bush	12	Print
Light Gray	3749 Axle Pin without Friction Ridges Lengthwise	12	Print
Light Gray	4274 Pin 1/2 without Friction Ridges	12	Print
Black	3023 Plate 1 x 2	11	Print
Black	3700 Brick 1 x 2 [1 Pin Hole]	8	Print
Black	3701 Brick 1 x 4 [3 Pin Holes]	8	Print
Yellow	3710 Plate 1 x 4	8	Print
Black	3710 Plate 1 x 4	8	Print
Light Gray	3673 Pin without Friction Ridges Lengthwise	7	Print
Black	3705 Axle 4	6	Print
Black	3707 Axle 8	6	Print
Yellow	2711 Plate 1 x 5 with Toothed Ends, 2 Studs and Center Axle Hole	4	Print
Black	3022 Plate 2 x 2	4	Print
Light Gray	3651 Axle and Pin Connector	4	Print
Yellow	3700 Brick 1 x 2 [1 Pin Hole]	4	Print
Yellow	3702 Brick 1 x 8 [7 Pin Holes]	4	Print
Yellow	3703 Brick 1 x 16 [15 Pin Holes]	4	Print
Black	3706 Axle 6	4	Print
Black	3737 Axle 10	4	Print
Yellow	3738 Plate 2 x 8 [7 Holes]	4	Print
Black	3894 Brick 1 x 6 [5 Pin Holes]	4	Print
Black	4519 Axle 3	4	Print
Yellow	3023 Plate 1 x 2	3	Print
Light Gray	3647 Gear 8 Tooth	3	Print
Black	3708 Axle 12	3	Print
Black	3709 Plate 2 x 4 [3 Holes]	3	Print
Light Gray	4143 Gear 14 Tooth Bevel	3	Print
Light Gray	4442 Plate 1 x 8 with Toothed Ends	3	Print
Black	2420 Plate 2 x 2 Corner	2	Print
Black	2730 Brick 1 x 10 [9 Pin Holes]	2	Print
Yellow	3024 Plate 1 x 1	2	Print
Light Gray	3069b Tile 1 x 2 with Groove	2	Print
Black	3460 Plate 1 x 8	2	Print
Light Gray	3648a Gear 24 Tooth [Old Style - Three axle holes]	2	Print
Light Gray	3650c Gear 24 Tooth Crown with Reinforcements [New Style]	2	Print
Yellow	3666 Plate 1 x 6	2	Print
Black	3666 Plate 1 x 6	2	Print
Yellow	3701 Brick 1 x 4 [3 Pin Holes]	2	Print
Black	3702 Brick 1 x 8 [7 Pin Holes]	2	Print
Black	3703 Brick 1 x 16 [15 Pin Holes]	2	Print
Black	3704 Axle 2	2	Print
Yellow	3709 Plate 2 x 4 [3 Holes]	2	Print
Yellow	3795 Plate 2 x 6	2	Print
Yellow	3894 Brick 1 x 6 [5 Pin Holes]	2	Print
Black	3895 Brick 1 x 12 [11 Pin Holes]	2	Print
Yellow	3895 Brick 1 x 12 [11 Pin Holes]	2	Print
Light Gray	4019 Gear 16 Tooth with Round Holes [Old Style]	2	Print
Light Gray	4261 Steering Arm	2	Print
Light Gray	4263 Plate 1 x 4 with Toothed Ends	2	Print
Black	4716 Worm Gear	2	Print
Light Gray	3743 Gear Rack 1 x 4	1	Print
Light Gray	4032a Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)	1	Print
Light Gray	4150 Tile Round 2 x 2 with Bottom Cross	1	Print
Dark Gray	2900 Flex Cable End with Pin Connection [Old Style - No Clamp]	20	Buy
Black	2857 Tyre 30 x 20 Solid Balloon	4	Buy
Light Gray	4185 Wedge Belt Wheel [aka Pulley]	4	Buy
White	4266 Wheel 20 x 30	4	Buy
Light Gray	flex08c11 Flex Cable 11L	4	Buy
Black	71509 Rubber Band Small 13mm (Square Cross Section)	2	Buy
Dark Gray	75c14 Hose Rigid 3mm D. 14L / 11.2cm	2	Buy
Light Gray	flex08c07 Flex Cable 7L	2	Buy
Light Gray	flex08c19 Flex Cable 19L	2	Buy
Black	14728c100 String Cord Medium Thickness 100cm	1	Buy
Light Gray	2856c01 Turntable Large Type 1, 56 Tooth [Complete Assembly]	1	Buy
Trans-Yellow	3941 Brick Round 2 x 2 with Axle Hole	1	Buy
Black	70496 Hook, - Large	1	Buy
Dark Gray	75c05 Hose Rigid 3mm D. 5L / 4.0cm	1	Buy
Dark Gray	75c06 Hose Rigid 3mm D. 6L / 4.8cm	1	Buy
Light Gray	flex08c09 Flex Cable 9L	1	Buy
Light Gray	flex08c13 Flex Cable 13L	1	Buy
Black	71509 Rubber Band Small 13mm (Square Cross Section)	1 spare	Buy

Print set 8074 at home

The set tool makes an STL file for each of the 265 printable pieces, sorted by colour, plus a shopping list for the 52 to buy. Free, no account, and it runs on your own phone or computer.

Get the free print files

Pro adds print-ready plates for a 256 mm bed. About Pro

Parts data: Rebrickable, and it can differ slightly from your box. Part shapes: LDraw Parts Library (CC BY 4.0). Browse all sets. Independent project, not sponsored, authorised or endorsed by any brick company.