LEGO 7721
Combat Crawler X2

LEGO 7721 Combat Crawler X2 box image
Set number
7721
Theme
Exo-Force
Pieces
581 pcs
Year
2007
Used & parts
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“Combat Crawler X2” is LEGO® “Exo-Force” theme set number 7721. Released in 2007, it has 581 pieces. With Re:GO you can automatically work out what percentage of this set you can build from the LEGO parts you already own, along with the missing parts and an estimated cost. Use the links below to compare prices on Amazon, Rakuten, Yahoo! Shopping, Mercari and Yahoo! Auctions, and find the best deal on new, used, or individual parts.

Part breakdown 156 types

Color split (most first)
Black×212
Dark Bluish Gray×125
Light Bluish Gray×100
Red×55
Yellow×30
Blue×9
Pearl Light Gray×9
Trans-Neon Green×6
Trans-Red×4
Tan×4
White×3
Trans-Neon Orange×2
Main parts (most used first)
6558 Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots
Black · ×46
2780 Technic Pin with Friction Ridges Lengthwise and Center Slots
Black · ×33
32013 Technic Axle and Pin Connector Angled #1
Dark Bluish Gray · ×16
32551 Large Figure Weapon, Claw Hook with Axle
Light Bluish Gray · ×12
3713 Technic Bush
Red · ×10
53451 Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small
Red · ×10
3023 Plate 1 x 2
Light Bluish Gray · ×9
43093 Technic Axle Pin with Friction Ridges Lengthwise
Blue · ×9
2458 Brick Special 1 x 2 with Pin
Dark Bluish Gray · ×8
32062 Technic Axle 2 Notched
Red · ×8
32064b Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening]
Black · ×8
32187 Technic Driving Ring Extension, 4 Ridges
Light Bluish Gray · ×8
3700 Technic Brick 1 x 2 [1 Pin Hole]
Light Bluish Gray · ×8
3709 Technic Plate 2 x 4 [3 Holes]
Dark Bluish Gray · ×8
6587 Technic Axle 3 with Stud
Dark Bluish Gray · ×8
2444 Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs]
Dark Bluish Gray · ×7
3023 Plate 1 x 2
Yellow · ×7
32064b Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening]
Dark Bluish Gray · ×7
3022 Plate 2 x 2
Dark Bluish Gray · ×6
32018 Technic Brick 1 x 14 [13 Pin Holes]
Black · ×6
32054 Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole]
Red · ×6
32316 Technic Beam 1 x 5 Thick
Black · ×6
32525 Technic Beam 1 x 11 Thick
Light Bluish Gray · ×6
3709 Technic Plate 2 x 4 [3 Holes]
Black · ×6

More “Exo-Force” theme sets

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