Arin's Battle Mech
71804-1 Ninjago 2024 104 parts 10.1% repair risk Easy
Engage in clashes with the LEGO Ninjago 71804 Arin's Battle Mech, a 104-piece set depicting scenes from Dragons Rising season 2. The set showcases Arin's mech, built with posable joints for action poses, armed with a large sword and a rotating blade. It includes the Arin minifigure, holding his katana, ready to pilot the mech. Opposing him is the Wolf Mask Warrior minifigure, armed with a sword and flying a glider featuring posable wings, a disc shooter, and two spears. A brick-built crystal cave holds a magic mallet, complemented by a weapons rack with two golden katana sword accessories. A Starter Brick streamlines the build, allowing for immediate play in any Ninjago adventure.
Parts Inventory
| Part | Qty | LEGO price each |
|---|---|---|
![]() Plate Special 1 x 2 with Clip Horizontal on Side 11476 | 1× | €0,15 |
![]() Slope Curved 2 x 1 No Studs [1/2 Bow] 11477 | 2× | €0,06 |
![]() Plate Special 1 x 2 5.9mm Centre Side Towball Socket 14704 | 2× | €0,13 |
![]() Tile Round 2 x 2 with Bottom Stud Holder 14769 | 3× | €0,07 |
![]() Tile Round 2 x 2 with Dragon Head, White Gear in Dark Azure Circle print 14769pr9988 | 1× | Check price → View |
![]() Tile Special 1 x 2 with Two Vertical Teeth / Tooth 15209 | 3× | Check price → View |
![]() Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573 | 1× | €0,06 |
![]() Wedge Plate 4 Stud 45° Angle Plate 15706 | 2× | €0,22 |
![]() Creature Body Part, Barb Large (Claw, Talon) with Clip 16770 | 2× | €0,19 |
![]() Plate Round Corners 2 x 6 Double 18980 | 1× | €0,18 |
![]() Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard] 21459 | 2× | €0,13 |
![]() Tile Special 2 x 3 Pentagonal 22385 | 1× | €0,13 |
Repairability
Can you fix Arin's Battle Mech if a piece goes missing?
7 of the 69 part+color combinations in this set appear in 3 or fewer sets ever made. Lose one of those and a replacement is very hard to find.
Theme average
6.4%
All sets
6.7%
Hardest to replace
More Ninjago sets
Browse more LEGO Ninjago sets related to Arin's Battle Mech, including models from 2024 and other sets in the same theme.
Build DNA
Parts inventory insights for Arin's Battle Mech
104 pieces puts this build -77% against the average Ninjago set and -82% against the average 2024 release.

Vs average Ninjago set
Average Ninjago set: 458 pieces across 410 other sets.
Vs average 2024 set
Average 2024 set: 574 pieces across 561 other sets.
Color profile
Dominant color
Black
Unique parts
0.3 pieces per unique type
Repeat factor
Average pieces per unique type.
Most used part
Slope Curved 4 x 1 Double with No Studs
6xResults are based on official LEGO part inventories. Accuracy improves as you confirm set completeness.
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![Slope Curved 2 x 1 No Studs [1/2 Bow]](https://cdn.rebrickable.com/media/parts/elements/6179812.jpg)








![Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard]](https://cdn.rebrickable.com/media/parts/elements/6116596.jpg)
