How many pieces are in the Fire Stone Mech?

Fire Stone Mech contains 968 pieces.

What age is the Fire Stone Mech recommended for?

This set is recommended for ages 9+.

When was the Fire Stone Mech released?

Fire Stone Mech was released in 2020.

Breaking News

LEGO Retiring Soon List – October 2026 Update

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🏛 Ninjago

Set #71720

Fire Stone Mech

Fire Stone Mech is a visually striking, heavily armored powerhouse that brings a unique geological aesthetic to the Ninjago theme.

Before you buy

Who it's for: Ages 9+ · Intermediate build Perfect for Ninjago fans and builders who love chunky, heavily armored mechs
Build: 968 pieces · about 3.5 hours Build time is an estimate.
Price: $69.99 list price · 7.2¢ per piece
Availability: Retired at LEGO

★★★☆☆ 3.9 community rating from 104 ratings

Fans universally praise the chunky, imposing design and generous minifigure lineup, though some note that the leg articulation is slightly limited by the heavy armor plating.

$69.99

Check price on eBay

📝 Our Take

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

Fire Stone Mech is a visually striking, heavily armored powerhouse that brings a unique geological aesthetic to the Ninjago theme. With nearly 1,000 pieces, it ditches the typical sleek ninja look for a chunky, brawny build that screams elemental brawler.

This set is perfect for Ninjago fans and mech enthusiasts looking for solid display presence and great play features. The dual-minifigure cockpit and clever color blocking make it a satisfying construction project with a chunky, imposing final silhouette.

Skip this if you prefer agile, highly streamlined robots or dislike symmetrical builds. At nearly 30cm tall, it takes up substantial vertical shelf space and features some repetitive limb construction.

✨ New

Ask BlockTalk about this set

AI assistant with full set data

BlockTalk

Hi! I'm BlockTalk, your LEGO expert. Ask me anything about the Fire Stone Mech - building tips, investment potential, comparisons, or anything else!

Try asking:

How does the Fire Stone Mech scale with other Ninjago mechs? Can two minifigures actually fit comfortably in the cockpit? What makes the parts inventory in this set good for custom builds? Is this set a worthwhile investment now that it is retired?

🧱 Building Experience

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

🧩

968

Pieces

⏱

3.5h

Estimated Build Time

📊

Intermediate

Difficulty

📏

27cm × 19cm × 29cm

Dimensions

Build Highlights:

Sturdy internal skeleton that supports impressive articulation
Clever use of brackets and slopes to create rocky armor plating
Spacious dual-minifigure cockpit with detailed controls
Dynamic boulder-launching shooter mechanism integrated into the arms

📈 Investment Analysis

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

Not enough price history for a trend

B+

Investment Grade

⏳ Retired

As a retired Ninjago set from 2020 featuring a distinct mecha design, the Fire Stone Mech holds solid appeal for theme completionists and mech collectors alike. The inclusion of five minifigures—including exclusive hero variants—adds long-term secondary market value beyond just the brick count. While it may not command the astronomical premiums of modular buildings or major Star Wars UCS sets, its unique aesthetic and solid piece-to-price ratio at launch make it a reliable performer for sealed collectors looking for steady appreciation.

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

⚖ Compare Similar Sets

Ninja Ultra Combo Mech

Ninjago • 1,104 pcs

$89.99

Zane's Titan Mech Battle

Compared to other mid-sized Ninjago mechs, the Fire Stone Mech stands out for its wider, stockier proportions and unique volcanic color scheme. While sets like Lloyd's Legendary Dragon focus on organic movement, this mech leans entirely into industrial, heavily-armored brawler territory, making it distinct on the shelf.

5 Minifigures Included

Cole / Hero Cole - Clip on Back

6 parts

B+

The set includes five minifigures featuring Hero Nya, Hero Kai, and Hero Cole alongside villains Murt and Moe, complete with unique weapon accessories and collectible 'Shadow Blade' elements.

📦 Parts Inventory

Official piece count: 968
Parts cataloged in this inventory: 194 unique parts, 950 pieces
Minifigures: 5

LEGO counts 968 pieces. This inventory comes from a separate parts catalog and lists 977, including the 27 parts inside the minifigures; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.

Missing a piece? Check this set piece by piece, with look-alike colors flagged and element IDs for replacements.

Plate Special 2 x...

Part #: 10247 2× Black

Brick Curved 4 x ...

Part #: 11153 2× Red

Brick Curved 4 x ...

Part #: 11153 2× Light Bluish Gray

Tile Special 2 x ...

Part #: 11203 2× Black

Brick Special 1 x...

Part #: 11211 2× Dark Bluish Gray

Brick Special 1 x...

Part #: 11211 2× White

Brick Special 1 x...

Part #: 11211 1× Red

Plate Special 1 x...

Part #: 11458 6× Dark Bluish Gray

Plate Special 1 x...

Part #: 11476 2× Red

Plate Round 4 x 4...

Part #: 11833 2× Light Bluish Gray

Brick Wedged, Slo...

Part #: 13349 1× Black

Brick Curved Inve...

Part #: 13547 6× Light Bluish Gray

Brick Curved Inve...

Part #: 13547 6× Red

Brick Wedged, Slo...

Part #: 13548 2× Dark Bluish Gray

Brick Wedged, Slo...

Part #: 13548 6× Red

Brick Curved 2 x ...

Part #: 15068 1× Black

Plate Special 1 x...

Part #: 15070 4× Pearl Gold

Launcher Trigger,...

Part #: 15392 2× Dark Bluish Gray

Launcher, Plate S...

Part #: 15403 2× Light Bluish Gray

Tile Special Roun...

Part #: 15535 1× Red

Brick Sloped 45° ...

Part #: 15571 10× Pearl Gold

Brick Sloped 45° ...

Part #: 15571 5× Light Bluish Gray

Plate Special 1 x...

Part #: 15573 1× Red

Brick Sloped 45° ...

Part #: 15672 8× Dark Bluish Gray

Brick Sloped 45° ...

Part #: 15672 2× Dark Red

Tile Special 1 x ...

Part #: 15712 3× Red

Tile Special 1 x ...

Part #: 15712 2× Pearl Gold

Plate Special 1 x...

Part #: 18649 2× Black

Technic Pin Conne...

Part #: 18654 4× Pearl Gold

Plate Special 1 x...

Part #: 18677 2× Red

Tile Special Roun...

Part #: 20482 1× Reddish Brown

Large Figure Shou...

Part #: 21560pr0017 1× Red

Tile Special 2 x ...

Part #: 22385 2× Red

Tile Special 2 x ...

Part #: 22385 3× Light Bluish Gray

Brick Sloped 45° ...

Part #: 22388 2× Trans-Orange

Brick Sloped 45° ...

Part #: 22388 2× Light Bluish Gray

Brick Special 1 x...

Part #: 22885 3× Tan

Brick 2 x 2 Corner

Part #: 2357 2× Dark Bluish Gray

Plate 2 x 2 Corner

Part #: 2420 15× Dark Tan

Brick Curved Inve...

Part #: 24201 4× Red

Brick Curved 3 x ...

Part #: 24309 1× Black

Weapon Spear Tip ...

Part #: 24482 1× Pearl Gold

Wedge Plate 3 x 3...

Part #: 2450 2× Red

Wedge Plate 3 x 3...

Part #: 2450 2× Light Bluish Gray

Brick Special 1 x...

Part #: 2458 2× Black

Brick Wedged 3 x ...

Part #: 2462 2× Dark Bluish Gray

Plate Special 1 x...

Part #: 2540 24× Pearl Gold

Plate Special 1 x...

Part #: 2540 2× Dark Bluish Gray

Plate Special 1 x...

Part #: 26047 4× Pearl Gold

Plate Round 2 x 2...

Part #: 2654 4× Dark Bluish Gray

Wedge Plate 2 x 2...

Part #: 26601 4× Red

Wedge Plate 2 x 2...

Part #: 26601 6× Dark Red

Wedge Plate 2 x 2...

Part #: 26601 4× Light Bluish Gray

Tile Special 2 x ...

Part #: 27263 2× Red

Technic Pin with ...

Part #: 2780 8× Black

Tile 2 x 2 Curved...

Part #: 27925 8× Pearl Gold

Brick Sloped 45° ...

Part #: 28192 2× Red

Brick Sloped 45° ...

Part #: 28192 2× Dark Bluish Gray

Brick Sloped 45° ...

Part #: 28192 4× Light Bluish Gray

Brick Sloped 45° ...

Part #: 28192 12× Pearl Gold

Large Figure Armo...

Part #: 28220 1× Light Bluish Gray

Large Figure Armo...

Part #: 28220 1× Black

Bracket 1 x 2 - 1...

Part #: 28802 2× Light Bluish Gray

Weapon Sword / Ma...

Part #: 29109 1× Flat Silver

Brick Wedged, Cur...

Part #: 29119 1× Light Bluish Gray

Brick Wedged, Cur...

Part #: 29119 1× Red

Brick Wedged, Cur...

Part #: 29120 1× Light Bluish Gray

Brick Wedged, Cur...

Part #: 29120 1× Red

Tyre 14 x 9 Smoot...

Part #: 30028 2× Black

Brick 2 x 2

Part #: 3003 2× Lime

Brick 1 x 2

Part #: 3004 2× Light Bluish Gray

Part #: 30166 1× Light Bluish Gray

Plate Special / S...

Part #: 30166 1× Dark Red

Plate 2 x 4

Part #: 3020 19× Dark Bluish Gray

Part #: 3021 12× Light Bluish Gray

Plate 2 x 2

Part #: 3022 16× Lime

Plate 2 x 2

Part #: 3022 13× Dark Bluish Gray

Part #: 3031 2× Dark Bluish Gray

Plate 4 x 6

Part #: 3032 1× Red

Plate 2 x 8

Part #: 3034 3× Dark Bluish Gray

Brick Sloped 18° ...

Part #: 30363 2× Dark Bluish Gray

Bar 4L (Lightsabe...

Part #: 30374 1× Reddish Brown

Brick Sloped 45° ...

Part #: 3038 2× Dark Bluish Gray

Brick Sloped 45° ...

Part #: 3039 3× Red

Brick Sloped 45° ...

Part #: 3039 1× Dark Bluish Gray

Brick Sloped 45° ...

Part #: 3044c 3× Red

Brick Sloped 45° ...

Part #: 3044c 3× Dark Bluish Gray

Brick Sloped 45° ...

Part #: 3046a 2× Dark Bluish Gray

Brick Curved 2 x ...

Part #: 30602 2× Red

Brick Curved 2 x ...

Part #: 30602 2× Light Bluish Gray

Part #: 3070b 2× Yellow

Plate Special 1 x...

Part #: 32028 1× Light Bluish Gray

Technic Axle and ...

Part #: 32034 2× Black

Technic Pin Long ...

Part #: 32054 4× Black

Technic Axle 2 No...

Part #: 32062 3× Red

Technic Bush 1/2 ...

Part #: 32123b 2× Light Bluish Gray

Technic Beam 2 x ...

Part #: 32140 4× Black

Brick Curved Inve...

Part #: 32803 5× Light Bluish Gray

Brick Special 1 x...

Part #: 32952 6× Red

Plate Special 2 x...

Part #: 33909 2× Light Bluish Gray

Part #: 3623 5× Dark Bluish Gray

Brick Sloped Inve...

Part #: 3660 2× Tan

Plate 1 x 6

Part #: 3666 2× Dark Bluish Gray

Plate 1 x 6

Part #: 3666 3× Dark Red

Bracket 1 x 1 - 1...

Part #: 36840 4× Dark Bluish Gray

Bracket 1 x 1 - 1...

Part #: 36840 12× Bright Light Orange

Bracket 1 x 1 - 1...

Part #: 36841 12× Light Bluish Gray

Technic Axle 4

Part #: 3705 2× Black

Technic Axle 6

Part #: 3706 2× Red

Plate 1 x 4

Part #: 3710 11× Dark Tan

Technic Bush

Part #: 3713 2× Red

Weapon Sword Curv...

Part #: 37341a 2× Pearl Gold

Weapon Dagger / K...

Part #: 37341b 2× Pearl Gold

Weapon Sword Blad...

Part #: 37341c 2× Pearl Gold

Weapon Scythe / H...

Part #: 37341d 2× Pearl Gold

Weapon Scythe / H...

Part #: 37341e 2× Pearl Gold

Brick Sloped Inve...

Part #: 3747b 2× Light Bluish Gray

Part #: 4032a 2× Light Bluish Gray

Plate Special 1 x...

Part #: 41740 4× Black

Part #: 4185 1× Pearl Gold

Technic Wedge Bel...

Part #: 4185 1× Dark Bluish Gray

Mudguard 2 x 4 wi...

Part #: 41854 1× Black

Part #: 43093 4× Blue

Brick Wedged, Slo...

Part #: 43710 1× Dark Bluish Gray

Brick Wedged, Slo...

Part #: 43711 1× Dark Bluish Gray

Brick Curved 6 x 2

Part #: 44126 1× Dark Bluish Gray

Technic Rotation ...

Part #: 44224 2× Dark Bluish Gray

Technic Rotation ...

Part #: 44225 2× Light Bluish Gray

Mudguard 2 x 4 wi...

Part #: 44674 2× Red

Flag 2 x 2 Trapez...

Part #: 44676 10× Light Bluish Gray

Flag 2 x 2 Trapez...

Part #: 44676 14× Red

Bracket 1 x 2 - 2...

Part #: 44728 33× Dark Bluish Gray

Plate Special 1 x...

Part #: 44861 6× Light Bluish Gray

Plate Special 1 x...

Part #: 44861 4× Black

Brick Round 1 x 1...

Part #: 4588 2× Dark Bluish Gray

Brick Wedged, Cur...

Part #: 47406 1× Dark Bluish Gray

Technic Rotation ...

Part #: 47455 8× Black

Brick Wedged, Cur...

Part #: 47456 2× Dark Bluish Gray

Brick Wedged, Cur...

Part #: 47456 3× Red

Brick Curved 2 x ...

Part #: 47457 2× Light Bluish Gray

Brick Curved 2 x ...

Part #: 47457 4× Red

Brick Curved 2 x ...

Part #: 47457 2× White

Part #: 47755 1× Dark Bluish Gray

Technic Brick Spe...

Part #: 48169 4× Dark Bluish Gray

Technic Brick Spe...

Part #: 48170 2× Dark Bluish Gray

Technic Brick Spe...

Part #: 48171 6× Black

Plate Special 1 x...

Part #: 48336 3× Red

Technic Beam 1 x ...

Part #: 50923 2× Dark Bluish Gray

Brick Curved 3 x ...

Part #: 50950 1× Red

Brick Curved 3 x ...

Part #: 50950 3× Dark Bluish Gray

Brick Curved 3 x ...

Part #: 50950 2× Dark Red

Weapon Axe Head, ...

Part #: 53454 1× Flat Silver

Brick Sloped 30° ...

Part #: 54200 2× Dark Bluish Gray

Wedge Plate 6 x 3...

Part #: 54383 2× Red

Wedge Plate 6 x 3...

Part #: 54383 1× Light Bluish Gray

Wedge Plate 6 x 3...

Part #: 54383 1× Dark Bluish Gray

Wedge Plate 6 x 3...

Part #: 54384 1× Light Bluish Gray

Wedge Plate 6 x 3...

Part #: 54384 1× Dark Bluish Gray

Part #: 59900 2× Pearl Gold

Brick Sloped Inve...

Part #: 60219 1× Dark Bluish Gray

Plate Special 1 x...

Part #: 60470b 4× Light Bluish Gray

Plate Round 4 x 4...

Part #: 60474 1× Orange

Brick Special 1 x...

Part #: 60475b 1× Dark Bluish Gray

Plate Special 1 x...

Part #: 60478 4× Dark Tan

Brick Special 1 x...

Part #: 60583b 1× Light Bluish Gray

Weapon Sword / Sc...

Part #: 60752 1× Flat Silver

Brick Curved 1 x ...

Part #: 6091 2× Red

Plate Special 1 x...

Part #: 61252 1× Light Bluish Gray

Hinge Brick 2 x 2...

Part #: 6134 2× Black

Technic Beam 3 x ...

Part #: 61408 4× Black

Brick Sloped 18° ...

Part #: 61409 2× Red

Plate Round 1 x 1...

Part #: 6141 4× Trans-Orange

Brick Special 2 x...

Part #: 6232 2× White

Technic Pin Conne...

Part #: 62462 1× Red

Technic Pin Conne...

Part #: 62462 1× Light Bluish Gray

Tile 1 x 3

Part #: 63864 2× Blue

Weapon Lightsaber...

Part #: 64567 1× Pearl Titanium

Flame / Headwear ...

Part #: 64647 1× Trans-Bright Green

Plate Special 4 x...

Part #: 64799 2× Black

Brick Wedged, Slo...

Part #: 64867 4× Dark Bluish Gray

Brick Wedged, Slo...

Part #: 64867pr0004 2× Dark Bluish Gray

Weapon Sword with...

Part #: 66954pat0001 1× Black

Brick Curved 4 x ...

Part #: 66955 2× Dark Bluish Gray

Brick Curved 4 x ...

Part #: 66955 4× Red

Brick Wedged, Cur...

Part #: 66956 7× Light Bluish Gray

Brick Wedged, Cur...

Part #: 66956 7× Red

Sticker Sheet for...

Part #: 67955 1× [No Color/Any Color]

Large Figure Skel...

Part #: 74261 2× Dark Bluish Gray

Shield Round Bowe...

Part #: 75902pr0008 1× Flat Silver

Shield Round Bowe...

Part #: 75902pr0014 2× Pearl Gold

Plate Round 1 x 1...

Part #: 85861 22× Pearl Gold

Technic Brick 1 x...

Part #: 85943 2× Dark Bluish Gray

Brick Sloped 30° ...

Part #: 85984 2× Dark Bluish Gray

Brick Sloped 30° ...

Part #: 85984 2× Black

Brick Sloped 30° ...

Part #: 85984 2× Red

Brick Sloped 30° ...

Part #: 85984pr0002 2× Dark Bluish Gray

Tile 2 x 4 with G...

Part #: 87079 1× Tan

Brick Special 1 x...

Part #: 87087 4× Light Bluish Gray

Plate Special 2 x...

Part #: 87580 2× Red

Windscreen 6 x 6 ...

Part #: 87606 1× Trans-Orange

Bar 3L

Part #: 87994 2× Reddish Brown

Technic Brick Spe...

Part #: 92013 2× Dark Bluish Gray

Bar 1L with Top S...

Part #: 92690 1× Reddish Brown

Bar 1L with Top S...

Part #: 92690 1× Pearl Titanium

Plate Special 1 x...

Part #: 92692 1× Black

Technic Axle and ...

Part #: 92907 2× Light Bluish Gray

Brick Curved 4 x ...

Part #: 93273 2× Red

Brick Curved 4 x ...

Part #: 93273 3× Dark Bluish Gray

Brick Curved 4 x ...

Part #: 93273 2× Black

Bracket 1 x 2 - 2...

Part #: 93274 13× Black

Brick Curved 4 x ...

Part #: 93606 1× Red

Brick and Axle Se...

Part #: 96874 1× Orange

Brick Round 2 x 2...

Part #: 98100 2× Black

Brick Round 2 x 2...

Part #: 98100 2× Light Bluish Gray

Propeller 1 Blade...

Part #: 98135 1× Dark Bluish Gray

Propeller 1 Blade...

Part #: 98135 1× Pearl Gold

Arm Mechanical wi...

Part #: 98313 10× Pearl Gold

Ring 4 x 4 with 2...

Part #: 98341 1× Pearl Gold

Part #: 99207 15× Red

Bracket 1 x 2 - 2...

Part #: 99207 4× Black

Bracket 1 x 2 - 2...

Part #: 99207 9× Light Bluish Gray

Tile Special 1 x ...

Part #: 99563 6× Light Bluish Gray

Tile Special 1 x ...

Part #: 99563 24× Pearl Gold

Bracket 1 x 2 - 1...

Part #: 99780 20× Dark Tan

Bracket 1 x 2 - 1...

Part #: 99781 8× Black

A fantastic parts pack for builders, offering generous quantities of brackets in Dark Bluish Gray and Dark Tan, alongside a wealth of Pearl Gold ingots, plates, and slopes.