Train Tunnel and Tracks Expansion Set (10425-1) is a set in the Trains theme, released in 2025. It has 20 pieces.
In numbers
Over the last 30 days the lowest shop price recorded for this set was 11.16 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 11.20 USD, by 45 % (based on 40 days with a price on record).
LEGO expects to retire this set in July 2027.
Product details
- Number
- 10425-1
- Name
- Train Tunnel and Tracks Expansion Set
- Theme
- Duplo › Trains
- Released
- January 2025
- Launched
- January 2025
- Retires
- July 2027 (expected)
- Pieces
- 20
- RRP
- ≈ 17.55 USD (24.99 CAD) (Canada)≈ 22.44 USD (19.99 EUR) (Germany)≈ 23.75 USD (17.99 GBP) (United Kingdom)19.99 USD (United States)
- Price per piece
- ≈ 0.878 USD (1.250 CAD) (Canada)≈ 1.122 USD (1.000 EUR) (Germany)≈ 1.188 USD (0.900 GBP) (United Kingdom)1.000 USD (United States)
- Best price (30 days)
- 11.16 USD
- Price per piece (best offer)
- 0.560 USD
- Barcodes from shop data, not confirmed
- EAN-13 5702017583808
BrickLink market data
We hold no current BrickLink prices for this set right now. BrickLink's own price guide is one click away.
Description from LEGO.com
LEGO® DUPLO® train track extension toddler toy
Read the full description
Extend toddlers’ train adventures with the Train Tunnel and Tracks Expansion Set (10425) toy for toddlers. Preschool kids aged 2+ grow their learning adventures as they add a tunnel and extra track to their LEGO® DUPLO® Town interactive toy train sets (10427 and 10428, sold separately). This creative building toy comes with a tunnel build and a 10-piece track, including a funnel element and a 2-way points switch so toddlers can change their train’s direction of travel. The action brick lights up the dark tunnel when activated by the interactive train from sets 10427 and 10428. This kids’ learning toy encourages a toddler’s development. By extending the train track through the toy tunnel, preschoolers learn spatial awareness. Using problem-solving skills to combine the toy track and prediction skills to determine the train’s destination, toddlers develop patience and focus as they discover the many routes they can make.
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Pricing
Price history
- Lowest shop price now11.20 USD
- Lowest ever 11.16 USD
Monthly lows as a table
| Month | Lowest price |
|---|---|
| November 2026 | 11.16 USD |
| October 2026 | 11.16 USD |
| September 2026 | 14.75 USD |
Price statistics by condition
Nobody has sold this set recently.
idee+spiel: 45 · Hamleys: 40 · Proshop: 40 · Spielemax: 40 · LEGO® Shop (US): 39 · LEGO® Shop (BR): 33 · LEGO® Shop (FR): 33 · Hugendubel: 28 · Thalia: 28 · LEGO® Shop (DE): 26 · LEGO® Shop (AT): 25 · LEGO® Shop (BE): 25 · LEGO® Shop (CH): 25 · LEGO® Shop (CZ): 25 · LEGO® Shop (DK): 25 · LEGO® Shop (GB): 25 · LEGO® Shop (GR): 25 · LEGO® Shop (ES): 24 · LEGO® Shop (FI): 24 · LEGO® Shop (HU): 24 · LEGO® Shop (IE): 24 · LEGO® Shop (IT): 24 · LEGO® Shop (LU): 24 · LEGO® Shop (NL): 24 · LEGO® Shop (NO): 24 · LEGO® Shop (PL): 24 · LEGO® Shop (PT): 24 · LEGO® Shop (RO): 24 · LEGO® Shop (SE): 24 · LEGO® Shop (SK): 24 · Orell Füssli: 21 · Thalia (AT): 19 · bücher.de: 18 · MediaMarkt (AT): 13 · OTTO: 13 · Joybuy (FR): 12 · Joybuy (NL): 12 · Joybuy (UK): 12 · Joybuy (DE): 11 · Toy Street: 10 · Zatu Games: 10 · Conrad (BE): 6 · Conrad (DE): 6 · Conrad (NL): 6 · BRICKMO: 1
Latest price from each shop
Countries (all)
On eBay
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Building instructions
Parts in this set
11 inventory lines
Same theme, piece count within 15 %