# LEGO 42057-1 — Ultralight Helicopter (2017)

Source: https://www.brickmissing.com/sets/42057-1-ultralight-helicopter
Publisher: BrickMissing (https://www.brickmissing.com) — free LEGO parts checker. Not affiliated with the LEGO Group.

Take to the skies with the Ultralight Helicopter! Enjoy aerial adventures with this aerodynamic one-man helicopter, part of the Technic collection. It features spinning main and tail rotors, a controllable tail rudder, and a detailed engine with moving pistons. The open cockpit includes a detailed seat, all presented in a striking white, red, and black color scheme. A selection of stickers adds to its authentic helicopter look. This robust 2-in-1 LEGO Technic model, set 42057, can be rebuilt to create an Experimental Aircraft, providing a double build-and-play experience.

## Set facts

- Set number: 42057-1
- Name: Ultralight Helicopter
- Theme: Technic
- Released: 2017
- Pieces: 199
- Distinct part + colour lots: 78
- Build difficulty: easy
- Repairability: 1.3% of this set's lots are hard to replace (1 of 78 part+colour combinations appear in three or fewer sets in the entire LEGO catalog).

## Complete parts list (78 lots, 199 pieces)

Prices are the official LEGO Pick a Brick price per individual part, where LEGO publishes one.

| Qty | Part | Colour | Part no. | LEGO element ID | LEGO price each |
| ---: | --- | --- | --- | --- | --- |
| 5 | Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle | Dark Bluish Gray | 11214 | 6015356 | €0,29 |
| 5 | Technic Beam 1 x 5 Thin with Axle Holes on Ends | Black | 11478 | 6327028 | €0,25 |
| 3 | Technic Panel Fairing #21 5L Small Smooth, Side B | White | 11946 | 6330084 | €0,38 |
| 3 | Technic Panel Fairing #22 5L Small Smooth, Side A | White | 11947 | 6343987 | €0,38 |
| 1 | Wheel 18 x 8 with Fake Bolts and Deep Spokes with Inner Ring | Light Bluish Gray | 13971 | 6044729 | €0,21 |
| 6 | Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise | Black | 15100 | 6073231 | — |
| 1 | Technic Axle 5 with Stop | Reddish Brown | 15462 | 6159763 | €0,11 |
| 1 | Propeller 3 Blade 9 Diameter with Pin Hole, Recessed Center | Black | 15790 | 6055123 | €0,53 |
| 1 | Technic Steering Wheel Pilot's Yoke [Hollow Stud, Axle Hole with + Opening] | Dark Bluish Gray | 18352 | 6082043 | — |
| 3 | Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening] | Tan | 18575 | 6346517 | €0,36 |
| 1 | Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle | Black | 18651 | 6089119 | €0,08 |
| 1 | Technic Pin Connector Round 1L [Beam] | Dark Bluish Gray | 18654 | 6100030 | €0,05 |
| 4 | Technic Pin Connector Hub with 1 Axle | Light Bluish Gray | 22961 | 6123815 | €0,13 |
| 1 | Technic Panel Curved and Bent 6 x 3 | Dark Bluish Gray | 24116 | 6133243 | — |
| 1 | Technic Axle 3 with Stop | Reddish Brown | 24316 | 6135494 | €0,07 |
| 2 | Technic Axle Towball | Light Bluish Gray | 2736 | 4211375 | €0,13 |
| 15 | Technic Pin with Friction Ridges Lengthwise and Center Slots | Black | 2780 | 278026 | — |
| 1 | Technic Pin Connector Hub with 2 Axles | Dark Bluish Gray | 27940 | 6167281 | €0,17 |
| 1 | Technic Beam 1 x 4 Thin with Stud Connector | Black | 2825 | 6331570 | €0,21 |
| 2 | Technic Engine Cylinder without Side Slots, with Bottom Slots | Light Bluish Gray | 2850b | 6514436 | €0,59 |
| 2 | Technic Engine Piston Round | Yellow | 2851 | 4112203 | €0,18 |
| 2 | Technic Engine Connecting Rod | Light Bluish Gray | 2852 | 6000018 | €0,11 |
| 2 | Technic Engine Crankshaft | Yellow | 2853 | 4119474 | €0,16 |
| 1 | Technic Engine Crankshaft Center | Tan | 2854 | 6355727 | €0,19 |
| 1 | Sticker Sheet for Set 42057-1 | Unknown | 29041 | 6171760 | — |
| 1 | Technic Pin 3/4 | Tan | 32002 | 6013938 | €0,08 |
| 2 | Technic Axle and Pin Connector Angled #1 | White | 32013 | 6332573 | €0,08 |
| 1 | Technic Axle and Pin Connector Angled #3 - 157.5? | Black | 32016 | 6261386 | €0,13 |
| 1 | Technic Beam 1 x 5 Thin | Light Bluish Gray | 32017 | 4503416 | €0,15 |
| 3 | Technic Axle and Pin Connector Angled #2 - 180° | Black | 32034 | 6271869 | €0,11 |
| 3 | Technic Axle Connector with Axle Hole | Black | 32039 | 3203926 | — |
| 3 | Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] | Black | 32054 | 3205426 | — |
| 5 | Technic Axle 2 Notched | Red | 32062 | 4142865 | €0,07 |
| 1 | Technic Beam 1 x 6 Thin | White | 32063 | 6345239 | €0,13 |
| 2 | Technic Axle 5 | Light Bluish Gray | 32073 | 4211639 | €0,11 |
| 4 | Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced | Light Bluish Gray | 32123b | 6271165 | €0,04 |
| 4 | Technic Beam 2 x 4 L-Shape Thick | White | 32140 | 4118980 | — |
| 2 | Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole | Black | 32184 | 6276951 | €0,12 |
| 4 | Technic Axle and Pin Connector Angled #4 - 135° | Red | 32192 | 6262898 | €0,19 |
| 4 | Technic Gear 12 Tooth Double Bevel | Black | 32270 | 4177431 | €0,18 |
| 1 | Technic Axle and Pin Connector Perpendicular Double | Black | 32291 | 6280394 | €0,15 |
| 2 | Technic Link 1 x 9 | Black | 32293 | 6244698 | €0,36 |
| 2 | Technic Beam 1 x 3 Thick | White | 32523 | 4208160 | €0,10 |
| 1 | Technic Beam 1 x 3 Thick with Black '40 1977 - 2017' and 24 Tooth Gear Print | White | 32523pr0001 | 6170737 | — |
| 2 | Technic Beam 1 x 11 Thick | Black | 32525 | 6029578 | €0,33 |
| 1 | Technic Beam 3 x 5 L-Shape Thick | White | 32526 | 4585040 | €0,24 |
| 1 | Technic Pin Long without Friction Ridges | Tan | 32556 | — | — |
| 6 | Technic Axle 4 | Black | 3705 | 370526 | €0,08 |
| 1 | Technic Axle 6 | Black | 3706 | 370626 | €0,12 |
| 3 | Technic Bush | Light Bluish Gray | 3713 | 6275844 | €0,05 |
| 2 | Technic Axle Pin without Friction Ridges Lengthwise | Tan | 3749 | 4666579 | €0,06 |
| 11 | Technic Beam 1 x 2 Thin | Black | 41677 | 6338428 | €0,13 |
| 2 | Wheel 11 x 8 with Center Groove | Light Bluish Gray | 42610 | 4211758 | €0,11 |
| 3 | Technic Pin 1/2 | Black | 4274 | 4143005 | €0,05 |
| 5 | Technic Axle Pin with Friction Ridges Lengthwise | Black | 43093 | 4206482 | €0,06 |
| 1 | Technic Axle 7 | Yellow | 44294 | 6130009 | €0,16 |
| 4 | Technic Axle 3 | Light Bluish Gray | 4519 | 4211815 | €0,05 |
| 1 | Technic Axle Connector Hub with 3 Axles at 120° | Light Bluish Gray | 57585 | 4502595 | €0,28 |
| 2 | Technic Axle 5.5 with Stop [Rounded Short End] | Dark Bluish Gray | 59426 | 4508553 | €0,11 |
| 2 | Technic Axle Connector Smooth [with x Hole + Orientation] | Black | 59443 | 4512363 | €0,06 |
| 4 | Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole | Black | 60483 | 6265091 | €0,07 |
| 1 | Technic Beam 3 x 3 T-Shape Thick | Black | 60484 | 4552347 | €0,18 |
| 1 | Tyre Offset Tread with Center Band 23 x 7 | Black | 61254 | 4541455 | €0,24 |
| 1 | Large Figure Wing, Small | White | 61800 | 4548556 | — |
| 1 | Technic Axle and Pin Connector Perpendicular Triple | Black | 63869 | 6362991 | €0,17 |
| 1 | Technic Panel Fairing # 4 Small Smooth Long, Side B | White | 64391 | 4547582 | €0,58 |
| 1 | Technic Panel Fairing # 3 Small Smooth Long, Side A | White | 64683 | 4547581 | €0,58 |
| 6 | Technic Axle and Pin Connector Perpendicular | White | 6536 | 6261372 | €0,10 |
| 11 | Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots | Black | 6558 | 4514553 | — |
| 1 | Technic Gear 12 Tooth Bevel | Tan | 6589 | 4565452 | €0,10 |
| 2 | Technic Pin with Friction Ridges Lengthwise and Towball | Black | 6628 | 4184169 | — |
| 2 | Hose Rigid 3mm D. 9L / 7.2cm | Black | 75c09 | 6409912 | €0,76 |
| 1 | Technic Panel Fairing #1 Small Smooth Short, Side A | White | 87080 | 4558878 | €0,48 |
| 1 | Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Big Squared Pin Holes] | Red | 87082 | 4560172 | — |
| 1 | Technic Axle 4 with Stop | Dark Bluish Gray | 87083 | 6083620 | €0,07 |
| 1 | Technic Panel Fairing #2 Small Smooth Short, Side B | White | 87086 | 4558874 | €0,48 |
| 2 | Tyre 17.5 x 6 with Shallow Staggered Treads and Middle Band | Black | 92409 | 4617848 | €0,23 |
| 2 | Technic Rotor Blade Small with Hole and Axle Connector End | Dark Bluish Gray | 99012 | 6271639 | €0,30 |

## Notes

- Track which of these parts you own and see what is missing: https://www.brickmissing.com/sets/42057-1-ultralight-helicopter
- Inventory data is based on official LEGO inventories via the Rebrickable catalog, updated daily.
- Part images, minifigure lists and related sets are on the set page: https://www.brickmissing.com/sets/42057-1-ultralight-helicopter