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G Scale Trains

We Buy G Scale Trains
G Scale trains for sale including steam and diesel locomotives, train sets and large scale model trains

Find G Scale Trains for Indoor & Garden Railroads

Shop G Scale trains for sale, including locomotives, rolling stock, train sets, and large-scale railroad equipment. Trainz offers new, pre-owned, vintage, discontinued, collectible, and hard-to-find G Scale trains for indoor layouts and garden railways.

Explore G Scale Steam Trains, G Scale Diesel Engines, and G Scale Train Sets, or shop G Scale trains from LGB, Aristo-Craft, and USA Trains.

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Shop G Scale Trains & Large Scale Model Railroading

Browse G Scale categories and manufacturers

Shop G Scale trains for sale, including locomotives, rolling stock, train sets, 45mm track, parts, accessories, and scenery for indoor railroads and garden railways. Trainz carries new and pre-owned G Scale equipment along with vintage, discontinued, collectible, and hard-to-find large-scale trains as inventory becomes available.

Whether you're starting a garden railway, expanding an established large-scale railroad, or searching for a particular locomotive, car, set, or replacement piece, use the categories and manufacturer collections below to narrow the selection.

G Scale Locomotives & Powered Equipment

Shop all G Scale engines and rolling stock together or narrow the selection by locomotive and powered-equipment type.

G Scale locomotives and rolling stock for sale including engines, freight cars and passenger cars Locos & Rolling Stock All engines & train cars G Scale diesel locomotives for sale including switchers, road diesels and large scale diesel engines Diesel Locomotives Switchers & road diesels G Scale steam locomotives for sale including narrow gauge, geared and mainline steam engines Steam Locomotives Steam engines & trains G Scale electric locomotives for sale including European, industrial and large scale electric engines Electric Locomotives Electric railway power G Scale motorized units for sale including powered rail vehicles and self-propelled railroad equipment Motorized Units Powered specialty rail vehicles Brass G Scale trains for sale including collectible locomotives and detailed large scale brass models Brass G Scale Trains Collectible brass models

G Scale Rolling Stock & Train Sets

Build complete large-scale trains with freight cars, passenger equipment, rail transit cars, and train sets.

G Scale freight cars for sale including boxcars, hoppers, tank cars, flatcars, gondolas and cabooses Freight Cars Freight rolling stock G Scale passenger cars for sale including coaches, baggage cars, observation cars and passenger rolling stock Passenger Cars Coaches & passenger cars G Scale rail transit cars for sale including trolleys, streetcars and large scale transit equipment Rail Transit Cars Trolleys & transit equipment G Scale train sets for sale including starter sets, passenger trains, freight trains and large scale sets Train Sets Starter & complete sets G Scale Thomas trains for sale including Thomas and Friends locomotives, train sets and large scale railway equipment Thomas Trains Thomas & Friends

G Scale Track, Parts & Layout

Find 45mm track, replacement parts, accessories, and scenery for building, repairing, expanding, and detailing a large-scale railroad.

G Scale 45mm track for sale including straight track, curves, switches and garden railway track G Scale Track 45mm track & switches G Scale train parts for sale including replacement parts for large scale locomotives and rolling stock G Scale Train Parts Repair & replacement parts G Scale accessories for sale including buildings, figures, vehicles and garden railway details G Scale Accessories Buildings, figures & details G Scale scenery for sale including landscaping, trees, roads and garden railway scenery G Scale Scenery Landscape & layout scenery

Shop G Scale Trains by Manufacturer

Browse dedicated G Scale and large-scale collections from popular model train manufacturers.

Aristo-Craft Aristo-Craft G Scale trains for sale including discontinued locomotives, rolling stock, track and large scale trains Bachmann Bachmann G Scale trains for sale including locomotives, rolling stock, train sets and large scale railroad equipment LGB LGB G Scale trains for sale including locomotives, rolling stock, train sets, track and garden railway equipment PIKO PIKO G Scale trains for sale including locomotives, rolling stock, train sets and garden railway equipment USA Trains USA Trains G Scale trains for sale including locomotives, freight cars, passenger cars and large scale railroad equipment

Understanding G Scale & Planning a Layout

Scale, track, power, and compatibility guidance

What Is G Scale?

G Scale is part of the large-scale model railroading hobby and is especially well known for garden railways. G Scale trains commonly operate on 45mm gauge track, but the models themselves are not limited to one exact proportion. Equipment commonly grouped within G Scale has been produced in several proportions, including approximately 1:22.5, 1:24, and 1:29.

The larger physical size provides room for substantial detail and makes G Scale suitable for indoor displays, large layouts, and outdoor railroads. Because proportions, dimensions, couplers, and minimum curve requirements can differ between products, compare individual specifications when combining equipment from different manufacturers or product lines. If you're comparing G Scale with other popular train sizes, our Model Train Scales Explained guide explains the major model train scales and their differences.

45mm Track & Garden Railway Planning

G Scale trains commonly operate on 45mm gauge track, which is widely used for indoor large-scale layouts and outdoor garden railways. A railroad can range from a simple loop to a large route with broad curves, long straight sections, switches, sidings, bridges, tunnels, and multiple operating areas.

When planning a railroad, consider the minimum curve requirements of the locomotives and rolling stock, available space, rail material, track connections, and whether the layout will operate indoors or outdoors. Larger locomotives and longer passenger or freight cars can require broader curves than more compact equipment.

Track Power, Battery Power & Control Options

G Scale locomotives can use different power and control arrangements. Traditional track-powered trains receive operating power through the rails, while some locomotives use onboard batteries and may be paired with radio or other remote-control systems.

The appropriate setup depends on the locomotive and its installed electronics as well as the railroad itself. Battery operation can reduce dependence on electrical contact between wheels and rails, while track power remains common across many G Scale product lines. Check individual equipment specifications before choosing a power or control system.

G Scale, G Gauge, Gauge 1 & F Scale

Large-scale model train terminology can be confusing because different modeling proportions can operate on the same 45mm track gauge. G Scale and G Gauge are often used broadly within the hobby, while individual product lines may represent different prototype gauges and scale proportions.

Gauge 1 is generally associated with approximately 1:32 standard-gauge modeling, while F Scale commonly uses 1:20.3 to represent North American 3-foot narrow-gauge prototypes. G Scale products can use other proportions, including approximately 1:22.5, 1:24, and 1:29. Sharing 45mm track does not make these models the same scale, so differences in physical size can be noticeable when trains, figures, vehicles, and structures are placed together.

Buying G Scale Trains at Trainz

Pre-owned equipment, discontinued models, and Trainz inventory

Buying Used, Vintage & Discontinued G Scale Trains at Trainz

Trainz carries new and pre-owned G Scale equipment, including vintage, collectible, and discontinued models that may be difficult to find through current manufacturer catalogs. Shopping used can help you replace an older locomotive, complete a train set, or expand an established garden railway.

As private collections arrive, the selection may include locomotives, freight and passenger cars, train sets, track, replacement parts, buildings, and accessories. Original-boxed equipment and new old stock may also be available. Inventory changes regularly, so check individual listings for the specific models and condition details you need.

Thinking About Selling Your G Scale Train Collection?

Information about selling qualifying large-scale collections

Trainz purchases qualifying G Scale and large-scale train collections that may include locomotives, rolling stock, train sets, track, structures, scenery, accessories, parts, and other model railroad equipment.

Whether you're downsizing a garden railway, selling a longtime collection, or helping with an estate, visit Sell My Trains – How It Works to learn more about selling your trains to Trainz.

Learn about selling qualifying collections through Sell My Trains.

How Selling Your Collection Works

G Scale Model Train Questions

Frequently asked questions about large-scale railroading

What is G Scale?

G Scale refers broadly to large-scale model trains commonly operated on 45mm gauge track. Unlike model scales defined around one fixed proportion, equipment commonly grouped within G Scale can represent several modeling proportions.

Is G Scale the same as G Gauge?

The terms are often used interchangeably in the hobby, but scale and gauge describe different things. Scale refers to the proportion of the model compared with the prototype, while gauge refers to the distance between the rails. The large-scale trains commonly called G Scale or G Gauge generally operate on 45mm track.

What scale ratio is G Scale?

There is not one universal ratio for everything sold as G Scale. Large-scale product lines using 45mm track have been produced in several proportions, including approximately 1:22.5, 1:24, and 1:29. Check individual product specifications when matching equipment by scale proportion.

What kinds of G Scale trains can I buy?

G Scale equipment can include steam, diesel, and electric locomotives, motorized units, freight cars, passenger cars, rail transit equipment, train sets, 45mm track, parts, buildings, scenery, figures, vehicles, and other garden railway accessories.

Can G Scale trains run outdoors?

Many G Scale trains and track systems are designed with garden railway operation in mind, but outdoor suitability varies by manufacturer and product. Check recommendations for individual locomotives, rolling stock, track, electronics, structures, and accessories before leaving equipment exposed outdoors.

What track gauge do G Scale trains use?

G Scale trains commonly run on 45mm gauge track. Other large-scale modeling proportions, including Gauge 1 and F Scale, can also use 45mm track, so sharing the same track gauge does not mean the models are the same scale.

What are popular G Scale train manufacturers?

Well-known manufacturers associated with G Scale and large-scale model railroading include LGB, USA Trains, Bachmann, PIKO, Aristo-Craft, Accucraft, and others. Available brands at Trainz vary as new and pre-owned inventory arrives.

Does Trainz sell used G Scale trains?

Yes. Trainz carries pre-owned G Scale trains as inventory becomes available, including locomotives, rolling stock, train sets, track, accessories, parts, and other large-scale equipment. Inventory can also include vintage, discontinued, collectible, estate-find, and hard-to-find models.

Does Trainz buy G Scale train collections?

Yes. Trainz purchases qualifying G Scale collections that may include locomotives, rolling stock, train sets, track, buildings, scenery, accessories, parts, and other large-scale railroad equipment.

Browse our complete selection of Model Trains for additional scales, locomotives, rolling stock, train sets, track, accessories, and model railroad equipment.