How many pieces does the LEGO Combat Crawler X2 (7721-1) have?

The LEGO Combat Crawler X2 set (7721-1) contains 581 pieces. It was released in 2007 as part of the LEGO Exo-Force theme.

How can I find missing parts for LEGO set 7721-1?

On BrickMissing you can check which parts from the LEGO Combat Crawler X2 (7721-1) you already own. Add your LEGO collection and we'll show exactly which of the 581 pieces you're missing and which you already have.

Can I build the LEGO Combat Crawler X2 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 581 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Combat Crawler X2 from?

The LEGO Combat Crawler X2 (7721-1) belongs to the LEGO Exo-Force theme. You can browse all Exo-Force sets on BrickMissing to find more sets from this theme.

Combat Crawler X2

7721-1 Exo-Force 2007 581 parts 3.2% repair risk Intermediate

The EXO-FORCE faces a formidable threat with the Combat Crawler X2 (7721-1), a 2007 release from the Exo-Force theme. This menacing machine operates as two distinct battle units, presenting a dual challenge on Sentai Mountain and within the Golden City. In its combined configuration, the crawler boasts multiple clawed legs for traversing difficult terrain, incorporating a prison capture cage for enemy combatants. A powerful firing cannon, featuring a spring-loaded Technic missile, is mounted prominently for long-range assaults. When direct engagement intensifies, its front section detaches, transforming into an autonomous robot battle machine. Ryo, equipped with his own missile-launching strike flyer, must confront both elements of this advanced menace, employing hinge plates for his flyer's wing articulation to evade attacks.

Parts Inventory

🧱 581 parts

Part	Color	Qty	LEGO price each
Tile Special 1 x 2 Grille with Bottom Groove 2412b	Light Bluish Gray	2×	€0,06 View at LEGO → View
Tile Special 1 x 2 Grille with Bottom Groove 2412b	Black	3×	€0,06 View at LEGO → View
Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] 2444	Dark Bluish Gray	7×	Check price → View
Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] 2444	Black	1×	Check price → View
Plate 2 x 12 2445	Dark Bluish Gray	2×	€0,36 View at LEGO → View
Brick 2 x 6 2456	Black	2×	€0,29 View at LEGO → View
Brick Special 1 x 2 with Pin 2458	Dark Bluish Gray	8×	Check price → View
Plate Special 1 x 2 Side Handle [Free Ends] 2540	Yellow	3×	€0,07 View at LEGO → View
Plate Special 1 x 2 Side Handle [Free Ends] 2540	Black	4×	€0,07 View at LEGO → View
Technic Disc 3 x 3 2723	Black	2×	€0,21 View at LEGO → View
Technic Pin with Friction Ridges Lengthwise and Center Slots 2780	Black	33×	Check price → View
Technic Beam 1 x 4 Thin with Stud Connector 2825	Black	4×	€0,21 View at LEGO → View

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Repairability

Can you fix Combat Crawler X2 if a piece goes missing?

3.2%Low repair risk

easy to fixguard this box

5 of the 156 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

5.2%

All sets

6.7%

Hardest to replace

Crane Section 4 x 12 x 3 · Black · only this setSticker Sheet for Set 7721-1 · Unknown · only this setHinge Panel 2 x 4 x 3 1/3 Locking Dual 2… · Black · 2 sets ever

How we calculate this →