Battle Arena (2520-1) is a Ninjago LEGO set released in 2011 with 463 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Ninjago sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 2 minifigures and 178 unique part types.
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Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
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Release year
2011 (15 years ago — may be retired)
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Catalog scale
463 parts listed · 178 inventory lines tracked
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Minifigures
2 in this set's inventory — verify completeness when buying used
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Build manual
No digital manual in our catalog — check the box tab or LEGO.com
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Shipping weight (est.)
~824 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
Run the completion checker, compare photos to the inventory, and check live listings for sealed pricing
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Market value
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Minifigures in Battle Arena
Parts in this set
178 parts · page 1 of 4 · updating…
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Animal Body Part / Plant, Tail / Claw / Horn / Branch / Tentacle, End Section40379 · ×4 · White -
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Medium87747 · ×5 · Black -
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Medium87747 · ×4 · White -
![Animal Body Part, Dog Bone [Long]](https://cdn.rebrickable.com/media/parts/elements/4600307.jpg)
Animal Body Part, Dog Bone [Long]92691 · ×1 · White -
![Animal Body Part, Dog Bone [Long]](https://cdn.rebrickable.com/media/parts/elements/4600309.jpg)
Animal Body Part, Dog Bone [Long]92691 · ×1 · Pearl Gold -
Bar 1L with Top Stud and Two Side Studs92690 · ×2 · Light Bluish Gray -
Bar 1L with Top Stud and Two Side Studs92690 · ×1 · Pearl Gold -
Bar 4L (Lightsaber Blade / Wand)30374 · ×1 · Light Bluish Gray -
Bar 4L (Lightsaber Blade / Wand)30374 · ×2 · Black -
Bar 4L (Lightsaber Blade / Wand)30374 · ×1 · Reddish Brown -
Brick 1 x 13005 · ×3 · Reddish Brown -
Brick 1 x 106111 · ×1 · Black -
Brick 1 x 106111 · ×1 · Reddish Brown -
Brick 1 x 23004 · ×1 · Lime -
Brick 1 x 2 x 5 with Blocked Open Studs and Bottom Stud Holder with Asymmetric Ridges2454a · ×1 · White -
Brick 1 x 2 x 5 with Blocked Open Studs and Bottom Stud Holder with Asymmetric Ridges2454a · ×2 · Reddish Brown -
Brick 1 x 43010 · ×2 · Reddish Brown -
Brick 1 x 63009 · ×1 · Black -
Brick 2 x 43001 · ×2 · Black -
Brick 2 x 62456 · ×1 · Dark Bluish Gray -
Brick 2 x 83007 · ×1 · White -
Brick Curved 1 x 2 x 1 1/3 with Curved Top6091 · ×2 · White -
Brick Curved 1 x 2 x 1 1/3 with Curved Top6091 · ×2 · Dark Bluish Gray -
Brick Round 1 x 1 Open Stud3062b · ×2 · Red -
Brick Round 2 x 2 Dome Top, Blocked Open Stud, Bottom Axle Holder30367b · ×4 · Red -
Brick Round 2 x 2 with Axle Hole3941 · ×14 · Reddish Brown -
Brick Round 2 x 2 with Axle Hole3941 · ×4 · Black -
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)54200 · ×2 · Dark Purple -
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)54200 · ×2 · White -
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)54200 · ×2 · Dark Bluish Gray -
Brick Sloped 30° 1 x 2 x 2/385984 · ×2 · Black -
Brick Sloped 33° 3 x 14286 · ×1 · Reddish Brown -
Brick Sloped 33° 3 x 14286 · ×3 · Black -
Brick Sloped 33° 3 x 23298 · ×2 · Light Bluish Gray -
Brick Sloped 45° 2 x 1 with Bottom Pin3040b · ×2 · Black -
Brick Sloped 45° 2 x 23039 · ×2 · White -
Brick Sloped 45° 2 x 23039 · ×1 · Reddish Brown -
![Brick Sloped 75° 2 x 2 x 3 [Hollow Studs]](https://cdn.rebrickable.com/media/parts/elements/4143982.jpg)
Brick Sloped 75° 2 x 2 x 3 [Hollow Studs]3684 · ×2 · Black -
Brick Sloped Inverted 45° 2 x 13665 · ×4 · Black -
Brick Special 1 x 1 with Headlight4070 · ×2 · Light Bluish Gray -
Brick Special 1 x 1 with Stud on 1 Side87087 · ×6 · Red -
![Brick Special 1 x 2 Palisade [aka Log]](https://cdn.rebrickable.com/media/parts/elements/4211180.jpg)
Brick Special 1 x 2 Palisade [aka Log]30136 · ×5 · Reddish Brown -
Brick Special 1 x 2 with Grille2877 · ×2 · Light Bluish Gray -
Brick Special 1 x 2 with Pin2458 · ×1 · Light Bluish Gray -
Brick Special 2 x 2 with Pin and Axle Hole6232 · ×2 · Dark Bluish Gray -
Brick Special 2 x 2 with Pin and Axle Hole6232 · ×2 · Light Bluish Gray -
![Brick Wedged, Curved 4 x 3 No Studs [Plain]](https://cdn.rebrickable.com/media/parts/elements/4567878.jpg)
Brick Wedged, Curved 4 x 3 No Studs [Plain]64225 · ×1 · White -
Brick Wedged, Sloped 4 x 2 Triple Left43710 · ×1 · Black