Jay's Electro Mech (71740-1) is a Ninjago LEGO set released in 2021 with 106 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Ninjago sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 2 minifigures and 59 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
2021 (5 years ago — may be retired)
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Catalog scale
106 parts listed · 59 inventory lines tracked
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Minifigures
2 in this set's inventory — verify completeness when buying used
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Build manual
Digital booklet available on this page — use it to verify bag contents
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Shipping weight (est.)
~184 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
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Market value
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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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Minifigures in Jay's Electro Mech
Parts in this set
59 parts · page 1 of 2 · updating…
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![Animal Body Part, Dog Bone [Long]](https://cdn.rebrickable.com/media/parts/elements/4600307.jpg)
Animal Body Part, Dog Bone [Long]92691 · ×2 · White -
Animal, Scorpion30169 · ×1 · Dark Blue -
Bracket 1 x 2 - 2 x 244728 · ×2 · Dark Blue -
Bracket 1 x 2 - 2 x 244728 · ×1 · Black -
Brick 1 x 33622 · ×2 · Light Bluish Gray -
Brick Arch 1 x 43659 · ×2 · Black -
Brick Curved 2 x 2 with Lip, No Studs30602 · ×2 · Dark Tan -
Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End47457 · ×1 · Olive Green -
Brick Curved 3 x 2 No Studs24309 · ×4 · Blue -
Brick Curved 4 x 3 with 3 Layers, 1 x 3 Cutout on Underside66955 · ×2 · Dark Blue -
![Brick Round 2 x 2 [Grill]](https://cdn.rebrickable.com/media/parts/elements/6107194.jpg)
Brick Round 2 x 2 [Grill]92947 · ×2 · Pearl Gold -
Brick Round 2 x 2 with Axle Hole3941 · ×1 · Trans-Orange -
Brick Round 4 x 4 Centre Hole87081 · ×4 · Dark Bluish Gray -
Brick Round 4 x 4 Centre Hole87081 · ×1 · Black -
Brick Sloped 30° 1 x 2 x 2/385984 · ×2 · Dark Purple -
Brick Sloped 45° 2 x 1 Double with Inside Stud Holder3044c · ×1 · Dark Bluish Gray -
Brick Sloped 45° 2 x 1 Triple with Inside Stud Holder15571 · ×1 · Pearl Gold -
Brick Sloped 75° 2 x 1 x 3 with Hollow Stud4460b · ×2 · Reddish Brown -
Brick Sloped Inverted 45° 6 x 2 Double with 2 x 4 Recessed22889 · ×2 · Dark Blue -
![Brick Special 1 x 2 with Vertical Clip [Open O Clip]](https://cdn.rebrickable.com/media/parts/elements/6127738.jpg)
Brick Special 1 x 2 with Vertical Clip [Open O Clip]30237b · ×2 · Dark Bluish Gray -
Brick Wedged, Sloped 4 x 4 Fractured Polygon Top64867 · ×1 · Dark Bluish Gray -
Insect, Spider with Elongated Tail Section29111 · ×1 · Medium Nougat -
Large Figure Weapon 6 Blade Ninja Star / Shuriken41125 · ×1 · Flat Silver -
Launcher, Brick Special 2 x 6 Spring Shooter with Light Bluish Gray Top49743c01 · ×1 · Dark Bluish Gray -
Mech Leg, Left, with Black Pin70946c01 · ×1 · Blue -
Mech Leg, Right, with Black Pin70943c01 · ×1 · Blue -
Mudguard 2 x 4 with Molded Headlights44674 · ×4 · Dark Blue -
Plant, Round 1 x 1 - 3 Bamboo Leaves30176 · ×2 · Green -
Plate 1 x 43710 · ×2 · Dark Purple -
Plate 1 x 83460 · ×1 · Dark Blue -
Plate 2 x 23022 · ×2 · Blue -
Plate 2 x 33021 · ×2 · Light Bluish Gray -
Plate Round 4 x 4 with Pin Hole60474 · ×2 · Yellow -
Plate Round Half 4 x 822888 · ×1 · Tan -
Plate Special 1 x 2 5.9mm Centre Side Towball Socket14704 · ×2 · Light Bluish Gray -
![Plate Special 1 x 2 with Clips Horizontal [Open O Clips]](https://cdn.rebrickable.com/media/parts/elements/6337231.jpg)
Plate Special 1 x 2 with Clips Horizontal [Open O Clips]60470b · ×1 · Yellow -
![Plate Special 1 x 2 with Clips Horizontal [Open O Clips]](https://cdn.rebrickable.com/media/parts/elements/6337268.jpg)
Plate Special 1 x 2 with Clips Horizontal [Open O Clips]60470b · ×2 · Light Bluish Gray -
![Plate Special 2 x 2 with 1 Pin Hole [Complete Underside Rib]](https://cdn.rebrickable.com/media/parts/elements/6061025.jpg)
Plate Special 2 x 2 with 1 Pin Hole [Complete Underside Rib]10247 · ×1 · Yellow -
Plate Special 2 x 2 with Groove and Center Stud (Jumper)87580 · ×1 · Black -
Plate Special 2 x 2 with Towball and Hole15456 · ×2 · Black -
Projectile, Arrow with Shaft, Hollow Black Rubber End46537 · ×1 · Light Bluish Gray -
Rock Panel 2 x 4 x 647847 · ×1 · Dark Bluish Gray -
![Technic Brick 1 x 2 [1 Pin Hole]](https://cdn.rebrickable.com/media/parts/elements/370024.jpg)
Technic Brick 1 x 2 [1 Pin Hole]3700 · ×2 · Yellow -
Technic Brick Special 2 x 2 with Pin Hole, with 2 Rotation Joint Sockets48172 · ×1 · Black -
Technic Pin with Friction Ridges Lengthwise with No Center Slots61332 · ×1 · Black -
Technic Pin without Friction Ridges Lengthwise3673 · ×1 · Light Bluish Gray -
Tile 1 x 3 with Wood Grain print63864pr0012 · ×2 · Dark Tan -
Tile 2 x 326603 · ×1 · Dark Tan