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 15.2% catalog rarity Easy

Kai's Dragon Mech Battle Pack (71851-1) is a LEGO set with a listed count of 85 parts. Available inventory data is shown below.

View at LEGO.com € 9,99→ lego.com

71851-1

3D build progress

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Parts Inventory

🧱 85 parts

Showing the first 12 rows of the parts list (85 pieces in total). The full list loads automatically.

Color	Qty	LEGO price each
Dark Red	1×	€0,15 View at LEGO → View
Dark Bluish Gray	4×	€0,17 View at LEGO → View
Light Bluish Gray	4×	€0,13 View at LEGO → View
Pearl Gold	1×	Check price → View
Red	2×	€0,13 View at LEGO → View
Red	2×	€0,10 View at LEGO → View
Pearl Gold	4×	€0,19 View at LEGO → View
Pearl Gold	4×	€0,13 View at LEGO → View
Trans-Orange	3×	€0,07 View at LEGO → View
Dark Bluish Gray	2×	€0,16 View at LEGO → View
Red	4×	€0,06 View at LEGO → View
Dark Red	1×	€0,44 View at LEGO → View

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Catalog rarity

How common are the parts in Kai's Dragon Mech Battle Pack?

15.2%High rarity

more commonless common

7 of 46 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

Creature Body Part, Dragon / Thestral Wing · Red · only this set in our catalogFlames 5 x 7 x 1 x 1/3 · Trans-Orange · only this set in our catalogWrap · Red · 2 sets in our catalog

How we calculate this →