Twin-rotor Helicopter (42020-1) is a Technic LEGO set released in 2014 with 145 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Technic sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 48 unique part types.
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Building instructions
2 official booklets — read on BrickID
Book 1 of 2 · US Letter Book 2 of 2 · US Letter
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Parts in this set
48 parts · updating…
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Sticker Sheet for Set 42020-116026 · ×1 · [No Color/Any Color] -
Technic Axle 2 Notched32062 · ×5 · Red -
Technic Axle 34519 · ×1 · Light Bluish Gray -
Technic Axle 43705 · ×6 · Black -
Technic Axle 4 with Stop87083 · ×2 · Dark Bluish Gray -
Technic Axle 532073 · ×3 · Light Bluish Gray -
![Technic Axle 5.5 with Stop [Rounded Short End]](https://cdn.rebrickable.com/media/parts/elements/4508553.jpg)
Technic Axle 5.5 with Stop [Rounded Short End]59426 · ×2 · Dark Bluish Gray -
Technic Axle 744294 · ×1 · Light Bluish Gray -
Technic Axle 83707 · ×1 · Black -
Technic Axle and Pin Connector Perpendicular6536 · ×3 · White -
Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes42003 · ×6 · Light Bluish Gray -
Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole32184 · ×4 · Black -
Technic Axle and Pin Connector Perpendicular Triple63869 · ×1 · Light Bluish Gray -
Technic Axle Connector Hub with 3 Axles at 120°57585 · ×2 · Light Bluish Gray -
![Technic Axle Connector Smooth [with x Hole + Orientation]](https://cdn.rebrickable.com/media/parts/elements/4512360.jpg)
Technic Axle Connector Smooth [with x Hole + Orientation]59443 · ×4 · Light Bluish Gray -
Technic Axle Pin with Friction Ridges Lengthwise43093 · ×12 · Blue -
Technic Beam 1 x 11 Thick32525 · ×2 · Blue -
Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole60483 · ×1 · Black -
Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole60483 · ×2 · Light Bluish Gray -
Technic Beam 1 x 2 Thin41677 · ×2 · Blue -
Technic Beam 1 x 3 Thick32523 · ×2 · Blue -
Technic Beam 1 x 3 Thin6632 · ×6 · Black -
Technic Beam 1 x 4 Thin32449 · ×2 · White -
Technic Beam 1 x 4 Thin with Stud Connector2825 · ×2 · Light Bluish Gray -
Technic Beam 1 x 5 Thick32316 · ×1 · White -
Technic Beam 1 x 7 Thick32524 · ×2 · Light Bluish Gray -
Technic Beam 1 x 9 Thick40490 · ×2 · White -
Technic Beam 2 x 4 L-Shape Thick32140 · ×4 · Black -
Technic Beam 3 x 3 L-Shape with Quarter Ellipse Thin32249 · ×2 · Black -
Technic Beam 3 x 5 L-Shape Thick32526 · ×4 · Light Bluish Gray -
Technic Bush3713 · ×4 · Light Bluish Gray -
Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced32123b · ×4 · Light Bluish Gray -
Technic Gear 12 Tooth Bevel6589 · ×2 · Tan -
Technic Gear 12 Tooth Double Bevel32270 · ×2 · Black -
Technic Panel Fairing #1 Small Smooth Short, Side A87080 · ×1 · Blue -
Technic Panel Fairing #2 Small Smooth Short, Side B87086 · ×1 · Blue -
Technic Pin 3/432002 · ×4 · Tan -
![Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Big Squared Pin Holes]](https://cdn.rebrickable.com/media/parts/elements/4560174.jpg)
Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Big Squared Pin Holes]87082 · ×2 · Black -
Technic Pin Connector Toggle Joint Smooth Double with Axle and Pin Holes87408 · ×2 · Black -
![Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole]](https://cdn.rebrickable.com/media/parts/elements/4211865.jpg)
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole]32054 · ×5 · Light Bluish Gray -
Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots6558 · ×6 · Blue -
Technic Pin Long without Friction Ridges32556 · ×1 · Tan -
Technic Pin with Friction Ridges Lengthwise and Center Slots2780 · ×5 · Black -
Technic Pin without Friction Ridges Lengthwise3673 · ×2 · Light Bluish Gray -
Technic Rotor Blade Small with Hole and Axle Connector End99012 · ×6 · Dark Bluish Gray -
![Technic Tooth 1 x 3 with Axle Hole [Rounded Underside]](https://cdn.rebrickable.com/media/parts/elements/4611639.jpg)
Technic Tooth 1 x 3 with Axle Hole [Rounded Underside]41669 · ×2 · Trans-Clear -
Tyre 14 x 6 Solid Smooth50951 · ×4 · Black -
Wheel 11 x 8 with Center Groove42610 · ×4 · Light Bluish Gray