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Arin's Spinjitzu Battle Mech

Snapshot

vs RRP
34% under
Per piece
4.7¢

Value per piece

cost per part at each reference

4.7¢lowest market value

about 57% under retail, which runs ~11¢ a piece

Reference

MSRP11¢
Used market4.7¢
New market7.2¢
Set Retiring soon · Dec 2026

Arin's Spinjitzu Battle Mech

Reference
71839-1
Theme
Ninjago
Year
2025
Parts
213
UPC
673419405058
EAN
5702017815725

Arin's Spinjitzu Battle Mech is a LEGO set from the LEGO Ninjago theme released in 2025. It is built from 213 pieces.

New avg$15.25Used avg$9.91MSRP$22.99

Avg. 3rd-party market prices via BrickPicker, not CollectORbuild seller prices

See full valuation & price history →Track its value free →
Value history$15.25▲ +$0.87 (+6.1%)all time
$11$13$15
Jul 4New · used (dashed) · retail $22.99Jul 25

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Parts in this set (96)

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A peek at the pile. See the full list, grouped by color, on the parts page.

Brick Curved 2 x 1 No Studs [1/2 Bow]10×Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style]2×Brick Sloped 65° 2 x 1 x 2Photo shows a different color. This lot is Black.2×Brick Special 1 x 1 with Stud on 1 Side4×Brick Special 1 x 2 with Studs on 2 Sides2×Brick Wedged, Curved 2 x 3 x 2/3 Two Studs, Wing End1×Hair Coiled, Straight SidesPhoto shows a different color. This lot is Black.1×Minifig Neckwear Bandana (Ninjago)1×Weapon Hilt Symmetric1×Plate 2 x 24×Plate 2 x 33×Plate Angled 2 x 2 with Step and Hole in CenterPhoto shows a different color. This lot is Black.1×Wedge Plate 2 x 2 Cut Corner4×Wedge Plate 4 x 6 Cut Corners1×View all 96 →