Trix 22163 (HO) Union Pacific Railroad (UP) class 4000 "Big Boy" 4014 - DCC/sound
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Trix 22163 (HO) Union Pacific Railroad (UP) class 4000 "Big Boy" 4014 - DCC/sound

Factory-installed RP 25 wheels and ­Kadee-compatible couplers

Prototype: Union Pacific Railroad (UP) class 4000 "Big Boy" heavy freight locomotive. Version with oil firing. Road number 4014. The locomotive looks as it did in 2019, operational and restored by Union Pacific.

$735.00 $980.00 -25%
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 In Stock

In the event of a warranty issue, we will assist with your claim to respective manufacturer.


We ship world wide with Canada Post. Cost will be provided at checkout. Free pick-up in store.


Store Policy: All sales are final. We do not take any item in return or exchange for any reason.


  • One-time series of the "Big Boy", road number 4014, with oil firing, put back into operation by Union Pacific in the prototype.
  • Prototypical execution of the model.
  • Factory-installed RP 25 wheels and Kadee-compatible couplers.
  • DCC and extensive sound functions

Model: The locomotive has a digital decoder and extensive sound functions (DCC and mfx). It also has controlled high-efficiency propulsion. 8 axles powered. Traction tires. The locomotive has an articulated frame enabling it to negotiate sharp curves. It also has Boxpok driving wheels. 2 each 7226 smoke generators can be installed in the locomotive. The headlight changes over with the direction of travel. The headlight, the backup light on the tender, the number board lights, and the smoke unit contacts will work in conventional operation and can be controlled digitally. The engineer's cab lighting can be controlled digitally. Maintenance-free, warm white LEDs are used for the lighting. The running gear is articulated for operation on curves. The locomotive has Boxpok driving wheels. The locomotive comes from the factory with RP 25 wheels and Kadee-compatible couplers. The middle driving axles are spring-loaded. Steam lines are mounted to swing out and back with the cylinders. There is a close coupling between the locomotive and tender. There is a powerful speaker in the tender and the volume can be adjusted. Coupler hooks can be inserted in the pilot on the front of the locomotive. The locomotive has separately applied metal grab irons. There are many separately applied details. Figures of a locomotive engineer and fireman for the engineer's cab are included. Length over the couplers approximately 46.5 cm / 18-5/16". The locomotive comes in a wooden case.

The image of the locomotive is digitally retouched.

Notes for operating this locomotive: The locomotive can be used on curved track with a radius of 360 mm / 14-3/16" or more. However, we recommend larger radii. Due to the overhang of the long boiler, signals, catenary masts, bridge railings, tunnel portals, etc. must be installed for sufficient clearance on curves. The track must be well mounted due to the heavy weight of the locomotive. There might be limitations on your turntable or transfer table due to the weight and length of the locomotive.

Products bearing "Union Pacific" are made under trademark license from the Union Pacific Railroad Company.

A freight car set to go with this locomotive can be found in the Trix H0 assortment under item number 24914.


Packing and Shipping

Boy Boy item box dimensions: 61cm x 17cm x 12cm and 3.5kg
(Big Boy inside the wooden case with an outer cardboard item box)

Big Boy shipping box: 67cm x 23cm x 23cm and 4.5kg
(Big Boy with corner protections inside shipping box)

New product
65 cm
22 cm
22 cm
3.50 kg
1 Item
Data sheet
Track System
HO (2-rail) Code 83 / Code 100