Arin's Spinjitzu Battle Mech

Arin's Spinjitzu Battle Mech (71839-1) is a set in the Ninjago theme, released in 2025. It has 201 pieces and 2 minifigures.

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Number:71839-1
Released:June 2025
Pieces:201
Box size:19.1 × 26.2 × 6.1 cm
Theme:Ninjago

Box size and weight as measured by Brickset.

In numbers

Over the last 30 days the lowest shop price recorded for this set was 15.02 USD, taken from 30 days with a price on record.

Since 9/25/2026 the lowest shop price has fallen from 20.47 USD to 15.02 USD, by 27 % (based on 42 days with a price on record).

LEGO expects to retire this set in December 2026.

Product details

Number: 71839-1
Name: Arin's Spinjitzu Battle Mech
Theme: Ninjago
Released: June 2025
Launched: June 2025
Retires: December 2026 (expected)
Pieces: 201
Minifigures: 2
RRP: ≈ 17.55 USD (24.99 CAD) (Canada)≈ 22.44 USD (19.99 EUR) (Germany)≈ 23.75 USD (17.99 GBP) (United Kingdom)22.99 USD (United States)
Price per piece: ≈ 0.087 USD (0.124 CAD) (Canada)≈ 0.112 USD (0.099 EUR) (Germany)≈ 0.118 USD (0.090 GBP) (United Kingdom)0.114 USD (United States)
Best price (30 days): 15.02 USD
Price per piece (best offer): 0.075 USD
Barcodes from shop data, not confirmed: EAN-13 5702017815725

≈ 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.

BrickLink market data

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Description from LEGO.com

Read the full description

Ninja fans aged 7 and over can play out scenes from season 3 of the NINJAGO® Dragons Rising TV show with this LEGO® NINJAGO Arin's Spinjitzu Battle Mech (71839) toy. This building set for kids features a NINJAGO mech with posable arms and legs, which can be tilted and twisted into different positions, a rotating torso, an opening chest to place a minifigure inside and 2 large sword accessories. Kids can also create their own ultimate mech by swapping body parts from Arin's Spinjitzu Battle Mech with parts from customisable mechs in the 2024 NINJAGO range (sold separately): Cole's Elemental Earth Mech (71806), Sora's Elemental Tech Mech (71807), Kai's Elemental Fire Mech (71808) and Lloyd's Elemental Power Mech (71817). The ninja toy role-play set comes with 2 minifigures: Arin with a crystal katana sword accessory and a Spectral Dragonian Warrior with its own sword accessory, plus a Baby Riyu model for kids to role-play gripping good vs. evil battles. Set contains 213 pieces.

Source: LEGO Shop Advertising

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Pricing

Best price ever≈ 15.02 USD (13.44 EUR) Advertising Sealed · gross · idee+spiel · seen 10/7/2026

Current best offer≈ 15.02 USD (13.44 EUR) Advertising Sealed · gross · idee+spiel · seen 11/3/2026

Price history

Lowest shop price now15.02 USD
Lowest ever 15.02 USD

Each day's lowest price among the shops' current offers, including VAT. A price in another currency is converted at the ECB reference rate of its day.

Monthly lows as a table

Month	Lowest price
November 2026	15.02 USD
October 2026	15.02 USD
September 2026	16.71 USD

≈ 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.

Price statistics by condition

Nobody has sold this set recently.

Sources idee+spiel: 48 · Hamleys: 40 · Proshop: 37 · LEGO® Shop (FR): 35 · LEGO® Shop (BR): 29 · LEGO® Shop (DE): 28 · Thalia: 28 · LEGO® Shop (BE): 27 · LEGO® Shop (GB): 27 · LEGO® Shop (GR): 27 · LEGO® Shop (AT): 26 · LEGO® Shop (CH): 26 · LEGO® Shop (CZ): 26 · LEGO® Shop (DK): 26 · LEGO® Shop (IE): 26 · LEGO® Shop (ES): 25 · LEGO® Shop (FI): 25 · LEGO® Shop (HU): 25 · LEGO® Shop (IT): 25 · LEGO® Shop (LU): 25 · LEGO® Shop (NL): 25 · LEGO® Shop (NO): 25 · LEGO® Shop (PL): 25 · LEGO® Shop (PT): 25 · LEGO® Shop (RO): 25 · LEGO® Shop (SE): 25 · LEGO® Shop (SK): 25 · Orell Füssli: 21 · Thalia (AT): 19 · bücher.de: 19 · Joybuy (FR): 15 · Toy Street: 15 · Zatu Games: 15 · OTTO: 14 · MediaMarkt (AT): 13 · Joybuy (DE): 12 · Joybuy (NL): 11 · Conrad (BE): 7 · Conrad (NL): 7 · Conrad (DE): 6 · BRICKMO: 3

Where these prices come from

On eBay

The cheapest eBay listings we saw in the last seven days. They are sellers' asking prices, so they are not in the shop price list or the best offer.

We have not seen a current eBay listing for this set.

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.

Canada ≈ 17.55 USD (24.99 CAD) unknown tax basis Available since 5/3/2025 — still on sale as far as we know.Recorded by BrickDb since 10/2/2026

Germany ≈ 22.44 USD (19.99 EUR) gross Available since 5/3/2025 — still on sale as far as we know.Recorded by BrickDb since 10/2/2026

United Kingdom ≈ 23.75 USD (17.99 GBP) gross Available since 5/3/2025 — still on sale as far as we know.Recorded by BrickDb since 10/2/2026

United States 22.99 USD net Available since 5/3/2025 — still on sale as far as we know.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

85 inventory lines

Catalogue image of the part Brick Curved 2 x 1 No Studs [1/2 Bow]

Brick Curved 2 x 1 No Studs [1/2 Bow] 11477· Black

×10

Brick Curved 2 x 1 No Studs [1/2 Bow] 11477· Bright Light Orange

×8

Catalogue image of the part Plate Special 1 x 2 with 5.9mm Centre Side Towball

Plate Special 1 x 2 with 5.9mm Centre Side Towball 14417· Dark Bluish Gray

×2

Catalogue image of the part Plate Special 1 x 2 5.9mm Towball Socket

Plate Special 1 x 2 5.9mm Towball Socket 14418· Light Bluish Gray

×2

Catalogue image of the part Tile Round 2 x 2 with Dragon Head, White Gear in Dark Azure Circle print

Tile Round 2 x 2 with Dragon Head, White Gear in Dark Azure Circle print 14769pr9988· Pearl Gold

×1

Catalogue image of the part Brick Curved 2 x 2 x 2/3

Brick Curved 2 x 2 x 2/3 15068· Bright Light Orange

×1

Catalogue image of the part Plate Special 1 x 1 with Vertical Tooth

Plate Special 1 x 1 with Vertical Tooth 15070· Pearl Gold

×2

Catalogue image of the part Technic Brick Special 2 x 2 with 10.2mm Balls with Holes and Axle Hole

Technic Brick Special 2 x 2 with 10.2mm Balls with Holes and Axle Hole 17114· Dark Bluish Gray

×1

Catalogue image of the part Plate Special Round 2 x 2 with Center Stud (Jumper Plate)

Plate Special Round 2 x 2 with Center Stud (Jumper Plate) 18674· Black

×1

Catalogue image of the part Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard]

Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard] 21459· Opal Trans-Clear

×1

Catalogue image of the part Tile Special 2 x 3 Pentagonal

Tile Special 2 x 3 Pentagonal 22385· Pearl Gold

×4

Catalogue image of the part Wedge Plate 2 x 2 Cut Corner

Wedge Plate 2 x 2 Cut Corner 26601· Black

×4

Catalogue image of the part Plate Special 2 x 3 with Rocks

Plate Special 2 x 3 with Rocks 27261· Black

×5

Brick 2 x 2 3003· Bright Light Orange

×2

Plate 2 x 4 3020· Bright Light Orange

×1

Plate 2 x 3 3021· Black

×3

2 minifigures

Minifigures in this set

Arin, Black Hair and Mask

/ fig-016431 /

No retail priceNo recent sales

Spectral Dragonian Warrior, Ghost Lower Body

/ fig-016379 /

No retail priceNo recent sales

Same theme, piece count within 15 %

Similar sets

Arin's Spinjitzu Battle Mech

In numbers

Product details

BrickLink market data

Description from LEGO.com

Can I build this?

Pricing

Price history

Latest price from each shop

On eBay

Recommended retail price

Building instructions

Parts in this set

Minifigures in this set

Arin, Black Hair and Mask

Spectral Dragonian Warrior, Ghost Lower Body

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