Ninja Adventures Start Here!
Unleash Arin's Battle Mech!

Join Arin in his posable mech to battle the Wolf Mask Warrior! Perfect for young Ninjago fans and easy to build.

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🏛 Ninjago
Set #71804

Arin's Battle Mech

Arin's Battle Mech is a fantastic entry point into the world of LEGO Ninjago mechs.

Before you buy

Who it's for
Ages 4+ · Beginner build Younger LEGO fans and those new to Ninjago mechs
Build
104 pieces · about 1.5 hours Build time is an estimate.
Price
$15.99 list price · 15.4¢ per piece
Availability
Retired at LEGO
★★★☆☆ 3.1 community rating from 18 ratings

Fans appreciate the set's affordability and posable design, making it a fun and accessible Ninjago mech. Some find the build to be too simple, but overall it's considered a good value for younger builders.

MSRP
$15.99
Best Price
$11.99
You Save
25% OFF
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📝 Our Take

AI-assisted editorial summary, grounded in our LEGO database and public community discussions. How we use AI

Arin's Battle Mech is a fantastic entry point into the world of LEGO Ninjago mechs. This small set packs a punch with its posable design and vibrant color scheme, making it an appealing build for younger fans or those new to the theme.

This set is perfect for kids aged 6+ who enjoy action-packed play and collecting minifigures. The build is straightforward and engaging, resulting in a sturdy mech that can withstand hours of imaginative battles.

Skip this if you're an experienced builder seeking a complex and challenging project. Consider larger Ninjago mech sets like the Lloyd's Titan Mech (70676-1) for a more intricate build experience.

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Hi! I'm BlockTalk, your LEGO expert. Ask me anything about the Arin's Battle Mech - building tips, investment potential, comparisons, or anything else!
Try asking:
How does Arin's Battle Mech compare to other Ninjago mechs in terms of size and playability? What are some ways to customize or modify this mech to make it unique? Is this set a good value for the price, considering the piece count and minifigures included? How durable is this mech for play, and will it hold up to repeated battles?

🧱 Building Experience

AI-assisted build estimate, grounded in our LEGO database and public community discussions. How we use AI
🧩
104
Pieces
⏱
1.5h
Estimated Build Time
📊
Beginner
Difficulty
Build Highlights:
  • Simple and enjoyable build process
  • Good introduction to basic mech construction techniques
  • Bright color scheme and posable limbs enhance playability
  • Easy to customize and modify

📈 Investment Analysis

AI-assisted investment analysis, grounded in our LEGO database and public community discussions. How we use AI
↓ Price declining
C+
Investment Grade
⏳ Retired
Arin's Battle Mech is a smaller, more accessible set, making it less likely to see significant appreciation compared to larger, more exclusive Ninjago sets. However, its affordability and popularity with kids could lead to modest gains, especially if the set is retired soon. The minifigures add some collectible value, but they are not exceptionally rare. Overall, it's a low-risk, low-reward investment.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

⚖ Compare Similar Sets

Arin's Battle Mech is a budget-friendly option compared to larger Ninjago mech sets. While it lacks the complexity and detail of those sets, it offers a more accessible entry point for younger fans or those new to the theme. Consider Lloyd's Battle Mech (71781-1) for a slightly larger and more detailed alternative.

2 Minifigures Included

The set includes two minifigures: Arin with a ninja headwrap and a Wolf Mask Warrior. The Wolf Mask Warrior is unique to this subtheme and adds to the set's playability.

📦 Parts Inventory

Official piece count
104
Parts cataloged in this inventory
60 unique parts, 95 pieces
Minifigures
2

The official piece count includes the 9 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.

Plate Special 1 x 2 with Clip Horizontal on Side Plate Special 1 x...
Part #: 11476 1× Magenta
Brick Curved 2 x 1 No Studs [1/2 Bow] Brick Curved 2 x ...
Part #: 11477 2× Sand Blue
Plate Special 1 x 2 5.9mm Centre Side Towball Socket Plate Special 1 x...
Part #: 14704 2× Light Bluish Gray
Tile Round 2 x 2 with Bottom Stud Holder Tile Round 2 x 2 ...
Part #: 14769 3× Dark Purple
Tile Round 2 x 2 with Dragon Head, White Gear in Dark Azure Circle Print Tile Round 2 x 2 ...
Part #: 14769pr9988 1× Pearl Gold
Tile Special 1 x 2 with Two Vertical Teeth / Tooth Tile Special 1 x ...
Part #: 15209 3× Black
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Plate Special 1 x...
Part #: 15573 1× Pearl Gold
Wedge Plate 4 Stud 45° Angle Plate Wedge Plate 4 Stu...
Part #: 15706 2× Black
Creature Body Part, Barb Large (Claw, Talon) with Clip Creature Body Par...
Part #: 16770 2× Black
Plate Round Corners 2 x 6 Double Plate Round Corne...
Part #: 18980 1× Black
Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard] Weapon Sword / Ka...
Part #: 21459 2× Pearl Gold
Tile Special 2 x 3 Pentagonal Tile Special 2 x ...
Part #: 22385 1× Dark Green
Plate Special 1 x 2 with End Towball Plate Special 1 x...
Part #: 22890 2× Dark Bluish Gray
Plant, Leaves 4 x 3 Plant, Leaves 4 x 3
Part #: 2423 1× Magenta
Plate Special, 2 x 2 Studs and Handle, Closed Ends (Mech Chest Plate / Armor) Plate Special, 2 ...
Part #: 27167 1× Bright Light Orange
Wheel Arch, Mudguard 3 x 4 with 2 x 2 Plate Wheel Arch, Mudgu...
Part #: 28326 1× Dark Bluish Gray
Brick 1 x 2 Brick 1 x 2
Part #: 3004 2× Magenta
Plate 2 x 3 Plate 2 x 3
Part #: 3021 1× Bright Light Orange
Plate 2 x 2 Plate 2 x 2
Part #: 3022 1× Dark Purple
Rock 1 x 1 Crystal 5 Point Rock 1 x 1 Crysta...
Part #: 30385 1× Opal Trans-Purple
Brick Sloped 45° 2 x 1 with Bottom Pin Brick Sloped 45° ...
Part #: 3040b 4× Magenta
Brick Curved 2 x 2 with Lip, No Studs Brick Curved 2 x ...
Part #: 30602 2× Black
Brick Round 1 x 1 Open Stud Brick Round 1 x 1...
Part #: 3062b 1× Magenta
Tile 2 x 2 with Groove Tile 2 x 2 with G...
Part #: 3068b 2× Bright Light Orange
Wedge Plate 4 x 6 Cut Corners Wedge Plate 4 x 6...
Part #: 32059 1× Black
Plate Special 2 x 2 with Only 2 studs Plate Special 2 x...
Part #: 33909 1× Black
Plate 1 x 6 Plate 1 x 6
Part #: 3666 1× Dark Blue
Technic Pin without Friction Ridges Lengthwise Technic Pin witho...
Part #: 3673 1× Yellow
Technic Brick 1 x 2 [1 Pin Hole] Technic Brick 1 x...
Part #: 3700 1× Dark Bluish Gray
Plate 2 x 6 Plate 2 x 6
Part #: 3795 3× Bright Light Orange
Animal Body Part / Plant, Tail / Claw / Horn / Branch / Tentacle, End Section Animal Body Part ...
Part #: 40379 1× Black
Bar 1 x 4 x 2 with Studs Bar 1 x 4 x 2 wit...
Part #: 4083 1× Black
Large Figure Weapon 6 Blade Ninja Star / Shuriken Large Figure Weap...
Part #: 41125 1× Pearl Gold
Plate Special 1 x 2, Top Clip [Open O] Plate Special 1 x...
Part #: 44861 2× Light Bluish Gray
Brick Wedged, Curved 2 x 3 x 2/3 Two Studs, Wing End Brick Wedged, Cur...
Part #: 47456 2× Pearl Gold
Rock Panel 2 x 4 x 6 Rock Panel 2 x 4 x 6
Part #: 47847 1× Dark Blue
Brick Special 1 x 1 with Studs on 2 Sides Brick Special 1 x...
Part #: 47905 1× Black
Technic Brick Special 2 x 2 with Pin Hole, with 2 Rotation Joint Sockets Technic Brick Spe...
Part #: 48172 1× Black
Plate Special 1 x 2 [Side Handle Closed Ends] Plate Special 1 x...
Part #: 48336 3× Dark Bluish Gray
Wedge Plate 2 x 4 Wedge Plate 2 x 4
Part #: 51739 1× Black
Brick Sloped Inverted 45° 6 x 1 Double with 1 x 4 Recessed Brick Sloped Inve...
Part #: 52501 1× Black
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Brick Sloped 30° ...
Part #: 54200 1× Trans-Red
Plate Special 1 x 2 with Clips Horizontal [Open O Clips] Plate Special 1 x...
Part #: 60470b 5× Black
Plate Special 1 x 2 with Handle on End [Closed Ends] Plate Special 1 x...
Part #: 60478 2× Black
Technic Pin with Friction Ridges Lengthwise with No Center Slots Technic Pin with ...
Part #: 61332 1× Black
Launcher, Brick Special 1 x 4 with Inside Clips (Disk Shooter) Launcher, Brick S...
Part #: 63783 1× Light Bluish Gray
Brick Wedged, Sloped 4 x 4 Fractured Polygon Top Brick Wedged, Slo...
Part #: 64867 1× Opal Trans-Purple
Wedge Plate 4 x 8 Cut Corners Wedge Plate 4 x 8...
Part #: 68297 1× Dark Tan
Brick Curved, 3 x 1 with 1/3 Inverted Cutout Brick Curved, 3 x...
Part #: 70681 2× Black
Mech Leg, Right, with Black Pin Mech Leg, Right, ...
Part #: 70943c01 1× Bright Light Orange
Mech Leg, Left, with Black Pin Mech Leg, Left, w...
Part #: 70946c01 1× Bright Light Orange
Technic Brick Special 1 x 2 with Pin Hole and 1 x 2 Plate Technic Brick Spe...
Part #: 73109 1× Light Bluish Gray
Shield Round Bowed with Gold Dragon, Red Eyes, Fans Print Shield Round Bowe...
Part #: 75902pr0022 1× Pearl Gold
Plate Angled 2 x 2 with Step and Hole in Center Plate Angled 2 x ...
Part #: 79846 2× Dark Green
Bar 3L Bar 3L
Part #: 87994 1× Pearl Gold
Weapon Sword / Khopesh Weapon Sword / Kh...
Part #: 93247 1× Flat Silver
Brick Curved 4 x 1 Double, No Studs Brick Curved 4 x ...
Part #: 93273 6× Dark Blue
Weapon Pike / Spear Flat End Weapon Pike / Spe...
Part #: 93789 2× Flat Silver
Weapon Sword, Big Blade with Bar Weapon Sword, Big...
Part #: 98137 1× Pearl Gold
Cockpit 4 x 2 x 3 with Pin Hole, and 2 Clips Cockpit 4 x 2 x 3...
Part #: 98876 1× Light Bluish Gray
The set includes a variety of useful plates, slopes, and tiles in black, magenta, and dark blue, making it a good source of parts for MOC builders looking to add color and detail to their creations.

🛒 Where to Buy

💎 Notable Parts

Dark Blue Slope Curved 4 x 1 Double with No Studs (6x) $0.90
Black Plate Special 1 x 2 with Clips Horizontal [Open O Clips] (5x) $0.75
Magenta Slope 45° 2 x 1 with Bottom Pin (4x) $0.60
Dark Purple Tile Round 2 x 2 with Bottom Stud Holder (3x) $0.45
Pearl Gold Wedge Curved 2 x 3 x 2/3 Two Studs, Wing End (2x) $0.50
Est. BrickLink Part Value
$3.20

💡 MOC Potential

🤖 Larger, more detailed Ninjago mech variations
🚗 Convert the mech into a futuristic vehicle
🏰 Use the parts to create a small fortress or outpost

Community Insights

Real opinions from Reddit and YouTube

What Reddit Says

No Reddit discussions found for this set.

What YouTubers Say

1 video found
BlockTalk AI

Keep the Piece praises Arin's Battle Mech (71804-1) as a good value 4+ set due to its combo model and printed shield scenery. However, the reviewer finds the villain glider design to be clunky.

What the Community Says

1 YouTube reviews
BlockTalk AI Summary

Keep the Piece praises Arin's Battle Mech (71804-1) as a good value 4+ set due to its combo model and printed shield scenery. However, the reviewer finds the villain glider design to be clunky.

Community Content: These reviews are from Reddit and YouTube users sharing their personal experiences. Opinions may vary.

Charts Inventory Statistics

60
Unique Parts
104
Official Piece Count
95
Cataloged Inventory Pieces
2
Minifigures
5
Spare Parts

The official piece count includes the 9 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.

Inventory Version: 1

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