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10425 LEGO Duplo Train Tunnel and Tracks Expansion Set thumbnail image

10425 LEGO Duplo Train Tunnel and Tracks Expansion Set
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10425 LEGO Duplo Train Tunnel and Tracks Expansion Set
  • Train Tunnel and Tracks Expansion Set thumbnail
  • Train Tunnel and Tracks Expansion Set thumbnail
  • Train Tunnel and Tracks Expansion Set thumbnail
  • Train Tunnel and Tracks Expansion Set thumbnail
  • Train Tunnel and Tracks Expansion Set thumbnail

LEGO 10425 Train Tunnel and Tracks Expansion Set is a Duplo set currently available at retail for $19.99 and is projected to retire at the end of 2029. Current new-sealed secondary market prices range from $22 to $29. Momentum for the set is fading, with prices sitting well below retail.

Forecast Model

This shows the set's value since release and where our forecast expects it to go.
LEGO 10425 Train Tunnel and Tracks Expansion Set is a DUPLO Trains set released in 2025, containing 20 pieces. It includes a tunnel build, a 10-piece track, a funnel element, a 2-way points switch for changing directions, and an action brick that triggers light effects. The action brick illuminates the dark tunnel when activated by the interactive trains from sets 10427 and 10428. The expansion is designed to integrate with DUPLO train systems, with specific compatibility noted for sets 10427 and 10428.

By our estimate Train Tunnel and Tracks Expansion Set retires in 2029, and our forecast sees it worth around $25 five years out, after a retirement pop of about 16%.
Collector and Investor Standing
The tunnel and extra track give a toddler train a new route, complete with a switch to change direction. DUPLO train pieces tend to get played with rather than collected, which keeps collector interest modest. Investor interest is thin too, as the theme has grown slowly and market activity is cooling.
27/100
Collector
Little collector interest
DUPLO train track is made for play
32/100
Investor
Among the weakest
Before retirement
All regions

For Sale (New/Sealed)

This chart shows the sales listing trends of 10425 Train Tunnel and Tracks Expansion Set.
 (US) Amazon listing for Train Tunnel and Tracks Expansion Set
BrickEconomy Choice
$12.89
(US) DUPLO Town Train Tunnel and Tracks Expansion Set 10425 NEW $19.32
-3.4%
(US) DUPLO: Train Tunnel and Tracks Expansion Set (10425) $19.95
-0.2%
(US) Train Tunnel and Tracks Expansion Set from BrickLink seller BensBrickstore $19.95
-0.2%
(US) LEGO DUPLO Train Tunnel and Tracks Expansion Set Building Kit 10425 $19.99
(US) Official LEGO Train Tunnel and Tracks Expansion Set $19.99
(US) New/Sealed LEGO DUPLO Train Set 10425 - Train Tunnel and Tracks Expansion Set $21.94
+9.8%
(US) 10425 Train Tunnel and Tracks Expansion Set - 20 Pieces For Age 2+ $22.00
+10.1%
(US) DUPLO Town Train Tunnel and Tracks Expansion Set 10425 673419388986 $22.00
+10.1%
(US) 10 Extra Pieces of LEGO DUPLO Town Train Tunnel and Tracks Expansion Set $22.70
+13.6%
(US) LEGO Duplo Train Tunnel And Tracks Expansion Set Building Set 10425 NEW $22.99
+15.0%
(US) DUPLO 10425 Train Tunnel and Tracks - Expansion Set - New in Sealed Box $23.99
+20.0%
(NL) 10425 Train Tunnel and Tracks Expansion Set - [ New. ] $24.18
+21.0%
(US) Train Tunnel and Tracks Expansion Set from BrickLink seller sdh4718 $25.00
+25.1%
Picked for your regionShow 13 more listings

Market Momentum

Bearish
This set is selling well below retail.
Price vs retailLast 30 days
36% below retail
Lowest new price at Amazon
Outlook:50% bearish·49% neutral·1% bullish
Why it's moving, signals and outlook

Compared with other Duplo Interactive Train sets

All Duplo Interactive Train setsValueSince retail
10428 Big Interactive Community Train$140At retail
10427 Interactive Adventure Train$82At retail
10426 Train Bridge and Tracks Expansion Set$40At retail
10425 Train Tunnel and Tracks Expansion Set$20At retail

Duplo Interactive Train Sets

10428 Big Interactive Community Train

Theme / Subtheme Duplo / Trains
Year 2025
Pieces / Duplo figures 103 / 4
Availability Retail
10428 LEGO Duplo Big Interactive Community Train
Retail $139.99
Available at retail

10427 Interactive Adventure Train

Theme / Subtheme Duplo / Trains
Year 2025
Pieces / Duplo figures 57 / 2
Availability Retail
10427 LEGO Duplo Interactive Adventure Train
Retail $79.99
Available at retail

10426 Train Bridge and Tracks Expansion Set

Theme / Subtheme Duplo / Trains
Year 2025
Pieces / Duplo figures 42 / 1
Availability Retail
10426 LEGO Duplo Train Bridge and Tracks Expansion Set
Retail $39.99
Available at retail

Sets in Duplo / Trains

10508 Deluxe Train Set

Theme / Subtheme Duplo / Trains
Year 2013
Pieces / Duplo figures 134 / 3
Availability Retired
10508 LEGO Duplo Deluxe Train Set
Retail $109.99
Value $297.90
Growth  +170.8%
Annual growth 8.5%

3772 Deluxe Train Set

Theme / Subtheme Duplo / Trains
Year 2005
Pieces / Duplo figures 110 / 3
Availability Retired
3772 LEGO Duplo Deluxe Train Set
Retail $89.99
Value $202.43
Growth  +124.9%
Annual growth 9.4%

10875 Cargo Train

Theme / Subtheme Duplo / Trains
Year 2018
Pieces / Duplo figures 105 / 3
Availability Retired
10875 LEGO Duplo Cargo Train
Retail $129.99
Value $295.76
Growth  +127.5%
Annual growth 19.3%

66494 Train 3-in-1 pack

Theme / Subtheme Duplo / Trains
Year 2015
Pieces 88
Availability Retired
66494 LEGO Duplo Train 3-in-1 pack
Retail $109.99
Value $132.90
Growth  +20.8%
Annual growth 3.0%

2745 Deluxe Electric Train Set

Theme / Subtheme Duplo / Trains
Year 1996
Pieces / Duplo figures 83 / 3
Availability Retired
2745 LEGO Duplo Deluxe Electric Train Set
Retail $99.99
Value $253.23
Growth  +153.3%
Annual growth 5.4%

2933 Deluxe Train Set with Motor

Theme / Subtheme Duplo / Trains
Year 2000
Pieces / Duplo figures 75 / 3
Availability Retired
2933 LEGO Duplo Deluxe Train Set with Motor
Retail $99.99
Value $255.17
Growth  +155.2%
Annual growth 3.4%

3771 Train Starter Set

Theme / Subtheme Duplo / Trains
Year 2005
Pieces / Duplo figures 65 / 2
Availability Retired
3771 LEGO Duplo Train Starter Set
Retail $49.99
Value $100.53
Growth  +101.1%
Annual growth 9.6%

10874 Steam Train

Theme / Subtheme Duplo / Trains
Year 2018
Pieces / Duplo figures 59 / 2
Availability Retired
10874 LEGO Duplo Steam Train
Retail $64.99
Value $185.33
Growth  +185.2%
Annual growth 30.1%

2730 Electric Play Train Set

Theme / Subtheme Duplo / Trains
Year 1993
Pieces / Duplo figures 54 / 2
Availability Retired
2730 LEGO Duplo Electric Play Train Set
Retail $84.99
Value $215.86
Growth  +154.0%
Annual growth 3.4%

10507 My First Train Set

Theme / Subtheme Duplo / Trains
Year 2013
Pieces / Duplo figures 52 / 2
Availability Retired
10507 LEGO Duplo My First Train Set
Retail $44.99
Value $136.10
Growth  +202.5%
Annual growth 8.9%

2732 Push-Along Play Train Set

Theme / Subtheme Duplo / Trains
Year 1993
Pieces / Duplo figures 46 / 3
Availability Retired
2732 LEGO Duplo Push-Along Play Train Set
Retail $43.00
Value $215.86
Growth  +402.0%
Annual growth 5.0%

3778 Station

Theme / Subtheme Duplo / Trains
Year 2005
Pieces / Duplo figures 46 / 2
Availability Retired
3778 LEGO Duplo Trains Station
Retail $19.99
Value $106.50
Growth  +432.8%
Annual growth 4.8%

10810 Push Train

Theme / Subtheme Duplo / Trains
Year 2016
Pieces / Duplo figures 45 / 2
Availability Retired
10810 LEGO Duplo Push Train
Retail $29.99
Value $110.26
Growth  +267.7%
Annual growth 9.9%

2701 Train and Station Set

Theme / Subtheme Duplo / Trains
Year 1988
Pieces / Duplo figures 42 / 2
Availability Retired
2701 LEGO Duplo Train and Station Set
Retail $44.00
Value $192.59
Growth  +337.7%
Annual growth 4.0%

2936 Train Station

Theme / Subtheme Duplo / Trains
Year 2000
Pieces / Duplo figures 40 / 3
Availability Retired
2936 LEGO Duplo Train Station
Retail $29.99
Value $69.71
Growth  +132.4%
Annual growth 3.3%

2741 Electric Train Starter Set

Theme / Subtheme Duplo / Trains
Year 1996
Pieces / Duplo figures 34 / 2
Availability Retired
2741 LEGO Duplo Electric Train Starter Set
Retail $59.99
Value $488.67
Growth  +714.6%
Annual growth 6.3%

2720 Goods Station

Theme / Subtheme Duplo / Trains
Year 1988
Pieces / Duplo figures 32 / 1
Availability Retired
2720 LEGO Duplo Trains Goods Station
Retail $24.99
Value $123.85
Growth  +395.6%
Annual growth 4.3%

10558 Number Train

Theme / Subtheme Duplo / Trains
Year 2013
Pieces / Duplo figures 31 / 1
Availability Retired
10558 LEGO Duplo Number Train
Retail $19.99
Value $124.27
Growth  +521.7%
Annual growth 11.0%

2700 Train Set

Theme / Subtheme Duplo / Trains
Year 1983
Pieces / Duplo figures 31 / 1
Availability Retired
2700 LEGO Duplo Train Set
Retail $24.99
Value $118.89
Growth  +375.8%
Annual growth 3.7%

2932 Train Starter Set with Motor

Theme / Subtheme Duplo / Trains
Year 2000
Pieces / Duplo figures 29 / 3
Availability Retired
2932 LEGO Duplo Train Starter Set with Motor
Retail $49.99
Value $299.93
Growth  +500.0%
Annual growth 4.6%

10872 Train Bridge and Tracks

Theme / Subtheme Duplo / Trains
Year 2018
Pieces / Duplo figures 26 / 1
Availability Retired
10872 LEGO Duplo Train Bridge and Tracks
Retail $24.99
Value $39.78
Growth  +59.2%
Annual growth 7.1%

3774 Bridge

Theme / Subtheme Duplo / Trains
Year 2005
Pieces 26
Availability Retired
3774 LEGO Duplo Trains Bridge
Retail $19.99
Value $221.55
Growth  +1008.3%
Annual growth 10.3%

10506 Train Accessory Set

Theme / Subtheme Duplo / Trains
Year 2013
Pieces 24
Availability Retired
10506 LEGO Duplo Train Accessory Set
Retail $19.99
Value $31.68
Growth  +58.5%
Annual growth 5.3%

10882 Train Tracks

Theme / Subtheme Duplo / Trains
Year 2018
Pieces 23
Availability Retired
10882 LEGO Duplo Train Tracks
Retail $19.99
Value $41.03
Growth  +105.3%
Annual growth 21.5%

2938 Train Tunnel

Theme / Subtheme Duplo / Trains
Year 2000
Pieces / Duplo figures 14 / 1
Availability Retired
2938 LEGO Duplo Train Tunnel
Retail $14.99
Value $40.99
Growth  +173.4%
Annual growth 3.9%

Train Tunnel and Tracks Expansion Set Questions

Is LEGO 10425 Train Tunnel and Tracks Expansion Set retired?

No. Released in January 2025, Train Tunnel and Tracks Expansion Set is still in production. LEGO has not announced a retirement date. Similar sets suggest it will retire around the end of 2029.

What is the one-year forecast for LEGO 10425 Train Tunnel and Tracks Expansion Set?

Our one-year forecast has Train Tunnel and Tracks Expansion Set at around $20 a year from now, close to where it is today. The short-term market reading is bearish. Demand, supply and price are tilting downward. Forecasts are estimates, not guarantees.

What is the piece count of LEGO 10425 Train Tunnel and Tracks Expansion Set?

Train Tunnel and Tracks Expansion Set is built from 20 pieces, about $1.00 each at retail.

Top lists

My Collection

Train Tunnel and Tracks Expansion Set Reviews

17 reviews
4.6
Collectors
Investors
BrickEconomy Member Review
“The DUPLO Train Tunnel and Tracks Expansion Set is a compact addition to DUPLO train systems, featuring 20 pieces including a tunnel and track segments. The set includes a switch track for directing trains and a stop gate for added control. The tunnel’s decorative brickwork and simple design make it a delightful element.”
 

About Duplo Trains

DUPLO trains have been part of the range since 1983, when push-along trains and DUPLO track first appeared. Electric trains followed in 1993, with a motor in the locomotive, and since then the line has come back every few years with a new design, a starter set and add-ons such as a station, a bridge, a tunnel and a level crossing. 10874 Steam Train from 2018 brought in coloured action bricks laid on the track, which make the engine stop, sound its horn, turn on its lights or change direction as it passes over them. The trains have also been a way to learn numbers, as in 10558 Number Train, and the 2025 trains are interactive too.

Trains currently consists of 50 sets that as of now has run from 1983 to 2025. As of today, 2741 Electric Train Starter Set is the most valuable Trains set with an estimated new/sealed value of $489.
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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 trains 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 toddlers 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 trains destination, toddlers develop patience and focus as they discover the many routes they can make.

Train track toy set Toddlers aged 2+ extend their LEGO DUPLO...
Description provided by LEGO©