Jay's Electro Mech
71740-1 Ninjago 2021 106 parts 14.9% catalog rarity Easy
The LEGO Ninjago 71740 Jay's Electro Mech stages a dynamic battle from Ninjago TV series Season 4. This 106-piece set features Jay's posable Electro Mech, designed with jointed limbs that allow for various action poses as he confronts the villain Eyezor. Jay, equipped with his golden sword, pilots the mech, while Eyezor maneuvers his compact ninja car, accompanied by a small spider toy. A dedicated golden-sword display element complements the scene. The build incorporates a specialized Starter Brick chassis, facilitating quick construction of the mech, which enables fans to recreate specific combat scenarios from the Ninjago universe.
Parts Inventory
Showing the first 12 rows of the parts list (106 pieces in total). The full list loads automatically.
| Part | Qty | LEGO price each |
|---|---|---|
| 1× | €0,10 | |
| 2× | €0,13 | |
| 4× | €0,07 | |
| 4× | Check price → View | |
| 1× | Check price → View | |
| 2× | €0,18 | |
| 1× | €0,10 | |
| 1× | €0,36 | |
| 2× | Check price → View | |
| 4× | €0,21 | |
| 1× | €0,11 | |
| 1× | €0,16 |
Catalog rarity
How common are the parts in Jay's Electro Mech?
10 of 67 recorded part+color combinations appear in 3 or fewer sets in our catalog. This does not measure replacement availability or price.
Theme average
6.4%
All sets
6.7%
Least common in our catalog
More Ninjago sets
Browse more LEGO Ninjago sets related to Jay's Electro Mech, including models from 2021 and other sets in the same theme.
Build DNA
Parts inventory insights for Jay's Electro Mech
106 pieces puts this build -77% against the average Ninjago set and -80% against the average 2021 release.

Vs average Ninjago set
Average Ninjago set: 458 pieces across 410 other sets.
Vs average 2021 set
Average 2021 set: 540 pieces across 471 other sets.
Color profile
Dominant color
Dark Blue
Unique parts
1.7 pieces per unique type
Repeat factor
Average pieces per unique type.
Most used part
Brick Round 4 x 4 Centre Hole
5xResults are based on official LEGO part inventories. Accuracy improves as you confirm set completeness.
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