How many pieces does the LEGO Kai's Dragon Mech Battle Pack (71851-1) have?

The LEGO Kai's Dragon Mech Battle Pack set (71851-1) contains 85 pieces. It was released in 2026 as part of the LEGO Ninjago theme.

How can I find missing parts for LEGO set 71851-1?

On BrickMissing you can check which parts from the LEGO Kai's Dragon Mech Battle Pack (71851-1) you already own. Add your LEGO collection and we'll show exactly which of the 85 pieces you're missing and which you already have.

Can I build the LEGO Kai's Dragon Mech Battle Pack with parts I already have?

Use BrickMissing's free parts checker to find out. Add LEGO sets you own to your collection and we'll cross-reference all 85 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Kai's Dragon Mech Battle Pack from?

The LEGO Kai's Dragon Mech Battle Pack (71851-1) belongs to the LEGO Ninjago theme. You can browse all Ninjago sets on BrickMissing to find more sets from this theme.

Kai's Dragon Mech Battle Pack

🏷️ 71851-1•🎨 Ninjago•📅 2026•🧱 85 parts•Easy

LEGO Ninjago 71851-1 Kai's Dragon Mech Battle Pack presents Kai's Dragon Mech Battle Pack as a NINJAGO moment with action and story. Depending on the model, the appeal comes from ninja energy, dragons, mechs, temples or vehicles that suggest movement and conflict. That gives the set a clearer role within the NINJAGO world.

Parts Inventory

🧱 85 parts

Part	Color	Qty
Plate Special 1 x 2 with Clip Horizontal on Side 11476	Dark Red	1×
Plate Special 1 x 2 with 5.9mm Towball Socket and Towball 14419	Dark Bluish Gray	4×
Plate Special 1 x 2 5.9mm Centre Side Towball Socket 14704	Light Bluish Gray	4×
Tile Round 2 x 2 with Gold Dragon Head on Dark Blue Background print 14769pr0027	Pearl Gold	1×
Slope Curved 2 x 2 x 2/3 15068	Red	2×
Slope 45° 2 x 1 Triple with Inside Stud Holder 15571	Red	2×
Creature Body Part, Barb Large (Claw, Talon) with Clip 16770	Pearl Gold	4×
Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard] 21459	Pearl Gold	4×
Slope 45° 1 x 1 x 2/3 Quadruple Convex [Pyramid] 22388	Trans-Orange	3×
Plate Special 1 x 2 with End Towball 22890	Dark Bluish Gray	2×

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Slope 45° 2 x 1 Triple with Inside Stud Holder	15571	Red	2×
Creature Body Part, Barb Large (Claw, Talon) with Clip	16770	Pearl Gold	4×
Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard]	21459	Pearl Gold	4×
Slope 45° 1 x 1 x 2/3 Quadruple Convex [Pyramid]	22388	Trans-Orange	3×
Plate Special 1 x 2 with End Towball	22890	Dark Bluish Gray	2×
Tile Round 1 x 1 Half Circle	24246	Red	4×
Plate Special, 2 x 2 Studs and Handle, Closed Ends (Mech Chest Plate / Armor)	27167	Dark Red	1×
Plate Special 2 x 3 with Rocks	27261	Red	2×
Tile 1 x 2 with Groove	3069b	Trans-Orange	2×
Plate Special 1 x 2 with 2 End Towballs	3170	Black	1×
Plate Special 1 x 2 Rounded with 2 Open Studs	35480	Dark Red	8×
Slope Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]	3660	Red	2×
Creature Body Part, Dragon / Thestral Wing with Bar Connection and Marbled Bright Light Orange Pattern	38547pat0002	Red	2×
Bracket 2 x 2 with 1 x 2 Vertical Studs	41682	Black	2×
Plate Special 1 x 2 [Open O Top Clip]	44861	Black	2×
Brick Special 1 x 1 with Studs on 2 Sides	47905	Dark Bluish Gray	1×
Plate Special 1 x 2 [Side Handle Closed Ends]	48336	Red	2×
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small	53451	Black	4×
Slope 30° 1 x 1 x 2/3 (Cheese Slope)	54200	Orange	1×
Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip]	60897	Orange	2×
Technic Pin with Friction Ridges Lengthwise with No Center Slots	61332	Black	1×
Weapon Hilt Symmetric	66909	Dark Bluish Gray	1×
Technic Brick Special 1 x 2 with Pin Hole and 1 x 2 Plate	73109	Red	1×
Flames 5 x 7 x 1 x 1/3 with Studs, Handle	7727	Trans-Orange	1×
Cockpit 4 x 2 x 3 with Pin Hole, and 2 Clips	98876	Dark Bluish Gray	1×
Bracket 1 x 2 - 1 x 2 Inverted	99780	Orange	2×
Headwear, Pearl Titanium Beetle Claws Pattern	7551pat0001	Dark Tan	1×
Hips and Dark Tan Legs with Rock Texture, Dark Bluish Grey/Orange Rocks print	970c11pr0009	Dark Tan	1×
Minifig Head Earth Monster, Rock Texture, Light Bluish Grey Shapes, Orange Eyer, Orange/Bright Light Yellow Rock Mouth	28621pr0009	Dark Tan	1×
Torso, Dark Bluish Grey Rock Texture, Orange/Bright Light Yellow Center, Gold Chain, Pendant print, Dark Tan Arms, Dark Bluish Gray Hands	973c11h12pr0003	Dark Tan	1×
Minifig Neckwear Shoulder Guards with Crystals and 2 Studs on Back	86124	Trans-Orange	1×
Hips and Red Legs with Robe End, Dark Red Sash, Gold Kneepads, Toes print	970c22pr0007	Red	1×
Torso, Ninja Robe, Gold Scales, Dragon print, Dark Red Arms, Black Hands	973c10h03pr0010	Red	1×
Wrap with Dark Red Spikes pattern	115499pat0003	Red	1×
Minifig Head Kai, Black/Red Eyemask, Angry Teeth/Dark Orange Eyebrows, Scar, Bandage, Smirk print	28621pr3977	Yellow	1×
Hair, High Ponytail with Dark Blue Headphones, Cat Ears pattern	5326pat0001	Coral	1×
Minifig Neckwear Bandana (Ninjago)	15619	Dark Blue	1×
Minifig Neckwear Armor Shoulder Pad Single with Scabbard for 2 Katanas, Wedge	5501	Pearl Gold	1×
Hips and White Legs with Coral Sash, Robe Ends, Gold/Sand Blue Knee Pads print	970c27pr0032	White	1×
Torso, Ninja Robes, Dark Blue/Coral Trim, Dark Blue Belt, Gold Cat print, White Arms, Dark Blue Hands	973c27h05pr0003	White	1×
Minifig Head Sora, Coral Eyeshadow and Lips, Gold Markings, Golden Eyes / Angry Grin print	28621pr3985	Yellow	1×

Build DNA

Parts inventory insights for Kai's Dragon Mech Battle Pack

85 pieces puts this build -82% against the average Ninjago set and -87% against the average 2026 release.

LEGONINJAGO

Vs average Ninjago set

-82%-375 parts

This set85

Average set460

Average Ninjago set: 460 pieces across 408 other sets.

Vs average 2026 set

-87%-546 parts

This set85

Average set631

Average 2026 set: 631 pieces across 423 other sets.

Color profile

13different colors

Dominant color

Red

Red20x

24%

Dark Red10x

12%

Pearl Gold10x

12%

Black10x

12%

Unique parts

1.8 pieces per unique type

Repeat factor

Average pieces per unique type.

Most used part

Plate Special 1 x 2 Rounded with 2 Open Studs

Results are based on official LEGO part inventories. Accuracy improves as you confirm set completeness.

This site is not affiliated with or endorsed by the LEGO Group.

Build Insights🧩46unique parts🎨13different colors📊6.5avg. parts per color🏆8×Plate Special 1 x 2 Rounded with 2 Open Studs

🎨 All Ninjago sets 📅 All sets from 2026

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