Combat Crawler X2

Combat Crawler X2 (7721-1) is a set in the Exo-Force theme, released in 2007. It has 561 pieces and 3 minifigures.

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Number:7721-1
Released:September 2007
Pieces:561
Box size:48 × 38.4 × 7.2 cm
Theme:Exo-Force

Box size and weight as measured by Brickset.

Product details

Number: 7721-1
Name: Combat Crawler X2
Theme: Exo-Force
Released: September 2007
Launched: September 2007
Retired: December 2007 in the United States
Pieces: 561
Minifigures: 3
RRP: ≈ 41.15 EUR (34.99 GBP) (United Kingdom)≈ 44.53 EUR (49.99 USD) (United States)
Price per piece: ≈ 0.073 EUR (0.062 GBP) (United Kingdom)≈ 0.079 EUR (0.089 USD) (United States)

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

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Recommended retail price

What LEGO published as the recommended retail price, market by market, in that market's own currency. No market's price is ever derived from another's.

United Kingdom ≈ 41.15 EUR (34.99 GBP) Available 10/24/2007 to 9/11/2008.Recorded by BrickDb since 10/2/2026

United States ≈ 44.53 EUR (49.99 USD) Available 10/24/2007 to 12/21/2007.Recorded by BrickDb since 10/2/2026

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

Building instructions

All building instructions for this set on LEGO.com

Parts in this set

164 inventory lines

Catalogue image of the part Tile Special 1 x 2 Grille with Bottom Groove

Tile Special 1 x 2 Grille with Bottom Groove 2412b· Black

×3

Tile Special 1 x 2 Grille with Bottom Groove 2412b· Light Bluish Gray

×2

Catalogue image of the part Tile 1 x 4 with Groove

Tile 1 x 4 with Groove 2431· Red

×1

Catalogue image of the part Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs]

Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] 2444· Black

×1

Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] 2444· Dark Bluish Gray

×7

Catalogue image of the part Plate 2 x 12

Plate 2 x 12 2445· Dark Bluish Gray

×2

Brick 2 x 6 2456· Black

×2

Catalogue image of the part Brick Special 1 x 2 with Pin

Brick Special 1 x 2 with Pin 2458· Dark Bluish Gray

×8

Catalogue image of the part Plate Special 1 x 2 Side Handle [Free Ends]

Plate Special 1 x 2 Side Handle [Free Ends] 2540· Black

×4

Plate Special 1 x 2 Side Handle [Free Ends] 2540· Yellow

×3

Catalogue image of the part Technic Disc 3 x 3

Technic Disc 3 x 3 2723· Black

×2

Catalogue image of the part Technic Pin with Friction Ridges Lengthwise and Center Slots

Technic Pin with Friction Ridges Lengthwise and Center Slots 2780· Black

×33

Catalogue image of the part Technic Beam 1 x 4 Thin with Stud Connector

Technic Beam 1 x 4 Thin with Stud Connector 2825· Black

×4

Catalogue image of the part Lever Small Base with Black Lever

Lever Small Base with Black Lever 298c02· Yellow

×2

Catalogue image of the part Technic Brick 1 x 2 - 1 x 2 Angled with Bumper Holder [Closed Front]

Technic Brick 1 x 2 - 1 x 2 Angled with Bumper Holder [Closed Front] 2991· Dark Bluish Gray

×4

Brick 2 x 4 3001· Black

×2

Handlebars 30031· Light Bluish Gray

×1

Brick 1 x 2 3004· Black

×3

Brick 1 x 2 3004· Dark Bluish Gray

×1

Brick 1 x 1 3005· Black

×4

Catalogue image of the part Fence Spindled 1 x 4 x 2 [2 Top Studs]

Fence Spindled 1 x 4 x 2 [2 Top Studs] 30055· Dark Bluish Gray

×3

Brick 1 x 6 3009· Light Bluish Gray

×1

Plate 2 x 4 3020· Light Bluish Gray

×2

Plate 2 x 3 3021· Red

×2

3 minifigures

Minifigures in this set

Catalogue image of the minifigure Devastator with Trans-Red Torso and Red Eyes