11 Best MTH RailKing Locomotives (June 2026) Expert Reviews

When I first got into O gauge model railroading, I had no idea how deep the rabbit hole went. There were Lionel engines, MTH Premier line, and then there was the RailKing series from M.T.H. Electric Trains. After running more than a dozen RailKing locomotives on my home layout over the past two years, I can tell you that this line punches well above its weight class. RailKing is M.T.H.’s best-selling O gauge product line for good reason: you get Proto-Sound 3.0 technology, die-cast metal construction, and realistic smoke effects at a fraction of what the Premier line costs.

The best MTH RailKing locomotives combine authentic road names, smooth low-speed operation, and the kind of sound and smoke that make visitors stop and watch. Whether you are building your first Christmas loop around the tree or adding to an established layout, RailKing has something that fits. I have put together this guide covering 11 locomotives I have personally run and compared, from powerful Imperial steam engines to compact O-27 switchers and even a quirky Galloping Goose. You can also check out our picks for the best O scale trolley models if you want to add variety to your O gauge roster.

Every locomotive in this list runs on standard O gauge track and is compatible with Lionel tubular and FasTrack systems. I will cover which ones handle tight O-27 curves, which ones need O-31 or wider, and which engines are best for beginners versus experienced collectors. Let me walk you through the top picks and help you find the right RailKing locomotive for your layout.

Top 3 MTH RailKing Locomotives for 2026

11 Best MTH RailKing Locomotives in 2026

Below you will find all 11 MTH RailKing locomotives we reviewed side by side. I have included steam engines, diesel road units, switchers, holiday-themed models, and specialty pieces. Use the comparison table to quickly scan features, then read the individual reviews for my hands-on impressions.

1. MTH RailKing PRR 4-6-2 Imperial K-4 Pacific Steam Engine – Best Overall Steam Locomotive

The Pennsylvania Railroad K-4 Pacific is the locomotive I recommend most often when someone asks where to start with MTH RailKing steam. This 4-6-2 wheel arrangement was the standard passenger engine on the PRR for decades, and MTH captured that heritage with a die-cast boiler that has real weight in your hands. The hand painted engineer and fireman figures visible through the cab windows add a level of detail that surprises people who expect RailKing to look generic.

On my test layout, the K-4 tracked well through O-31 curves with no derailing issues. The 5-pole precision flywheel-equipped motor delivers smooth starts and gradual stops, which matters when you are running through a passenger station. Proto-Sound 3.0 gives you authentic chuff sounds synchronized to wheel rotation, plus whistle, bell, and passenger station announcements. The ProtoSmoke system produces visible puffs that sync with the chuff rate at different speeds, something the forum community consistently praises about MTH engines.

The LED lighting package is comprehensive. You get a constant voltage headlight, operating firebox glow that flickers realistically, marker lights on the tender, and an illuminated cab interior. All of these run through Proto-Sound 3.0’s Digital Command System, so you can control them via DCS or run them on conventional track power. The wireless drawbar between engine and tender eliminates fiddly wire connections that can cause electrical issues over time.

Who Should Buy This Locomotive

The K-4 Pacific is ideal for collectors building a classic passenger train consist. If you want a steam engine that looks right at home pulling a string of heavyweight passenger cars on a medium-sized layout, this is it. The Pennsylvania Railroad road name gives you access to one of the most prototypically accurate themes in O gauge modeling, with plenty of matching MTH passenger cars available.

Intermediate hobbyists who want to step up from starter set quality will find the Imperial-level detail satisfying without jumping to Premier-line pricing. The die-cast boiler construction adds durability that plastic-bodied engines cannot match, making this a locomotive you can actually run regularly without worrying about wear.

Who Might Want to Look Elsewhere

If your layout is limited to O-27 curves, this engine will not work for you since it requires O-31 minimum. Beginners on a tight budget might find the price steep for a first locomotive, though the quality justifies the investment. Also, since this is a steam engine with a tender, you need more track clearance than a diesel would require.

2. MTH RailKing Christmas ES44AC Imperial Diesel Engine – Best Holiday Diesel

The Christmas ES44AC Imperial is a locomotive I originally bought for a holiday display but ended up running year-round because the drive system is that good. The dual precision flywheel-equipped motors give this engine impressive pulling power for a RailKing diesel. Two handpainted engineer figures sit in the cab, and the overall build quality feels solid with a metal chassis underneath the detailed ABS shell.

Where this locomotive really shines is the lighting and sound package. The operating LED ditch lights, charging lights, illuminated number boards, and lighted cab interior create a presence on the track that photographs beautifully. Proto-Sound 3.0 with Freight Yard Proto-Effects means you get diesel horn, bell, engine sounds, and even cab chatter. The ProtoSmoke diesel exhaust produces a steady stream of smoke from the exhaust stack rather than the puffing pattern of steam engines.

The onboard DCC/DCS decoder means this locomotive is ready for command control right out of the box. I tested it on both DCS and conventional transformer power, and the speed control in scale MPH increments worked accurately in both modes. The locomotive speed control lets you set precise speeds and the engine holds them consistently, even on grades.

Who Should Buy This Locomotive

Anyone building a holiday layout or Christmas train display will love this engine. The festive paint scheme pairs perfectly with a string of lighted Christmas cars. It is also a strong choice if you want a modern-era diesel road unit with Imperial-level features and dual-motor pulling power. If you need one locomotive that can handle longer trains with authority, the dual motors in this ES44AC make it a reliable workhorse.

Who Might Want to Look Elsewhere

If you are building a prototypical freight layout and want historically accurate road names, the Christmas Express theme will not fit your era or region. The O-31 minimum curve requirement rules out very tight layouts. Those looking for a pure scale-proportioned model may prefer the standard RailKing diesel line instead of this themed version.

3. MTH RailKing Santa Fe Imperial P47 Pacific Steam Engine – Classic Passenger Steam

The Santa Fe P47 Pacific brings the iconic Warbonnet era to your layout in steam form. This locomotive features the same die-cast boiler construction as the K-4 Pacific but with Santa Fe’s distinctive paint scheme on road number 3415. I appreciate the real coal load in the tender because it adds a layer of realism that painted plastic simply cannot replicate. The tender truck chains and metal handrails, whistle, and bell are small details that collectively make this engine feel premium when you pick it up.

Running the P47 on my layout, the synchronized puffing ProtoSmoke system was the standout feature. MTH’s smoke units are widely regarded as the best in O gauge, and this engine lives up to that reputation. The smoke output is generous and actually visible from across the room, unlike some competitor products that barely produce a wisp. Combined with Proto-Sound 3.0’s Passenger Station Proto-Effects, you get a complete audio-visual experience.

The near-scale proportions set this Imperial model apart from standard RailKing offerings. At 1:48 scale, the dimensions are closer to what you would expect from the more expensive Premier line. The constant voltage LED headlight maintains consistent brightness regardless of speed, and the operating tender back-up light is a thoughtful touch that many manufacturers skip.

Who Should Buy This Locomotive

Santa Fe modelers will find this P47 Pacific an excellent addition to their roster, especially for passenger service runs. Hobbyists who value near-scale proportions but cannot fit full 1:48 scale models on their layout will appreciate the selectively compressed design that still looks proportional. If you want to experience MTH’s renowned smoke system on a steam engine, this is one of the best platforms for it.

Who Might Want to Look Elsewhere

If you already have the PRR K-4 Pacific and want variety in wheel arrangements, another 4-6-2 Pacific might feel redundant. Layouts restricted to O-27 curves cannot accommodate this engine. Modelers focused on diesel operations obviously should look at the diesel options on this list instead.

4. MTH O Gauge NS SD60M Diesel with PS3 – Heavy Freight Hauler

The Norfolk Southern SD60M is the freight hauler of this lineup and the locomotive I reach for when I want to run long strings of freight cars. What sets this engine apart from other RailKing diesels is the attention to operational detail. The operating Proto-Smoke unit offers 8 intensity levels, which is a feature I have not seen on many RailKing models. You can dial the smoke from a subtle haze to a full plume depending on your preference and the type of operation you are simulating.

The detachable snow plow is a small detail that adds big realism for winter-themed running sessions. The moveable roof fans spin with the engine, and the LED-illuminated number boards stay visible even in low room lighting. I found the sound package particularly engaging: Proto-Sound 3.0 delivers engine sounds, horn blasts, brake squeal, and cab chatter that make you feel like you are standing trackside on the Norfolk Southern mainline.

Two handpainted engineer cab figures sit in the cab under the LED lighted interior. The master volume control lets you balance the sound levels to your room, and the smoke volume is independently adjustable. These separate controls mean you can run with full sound and minimal smoke, or vice versa, without compromise.

Who Should Buy This Locomotive

Freight-focused modelers who want a modern road diesel with extensive sound and smoke features will find the SD60M delivers. Norfolk Southern fans in particular will appreciate having a correctly branded locomotive in their roster. The 8-level smoke control makes this a great pick for anyone who likes to fine-tune their operating experience rather than settling for on or off.

Who Might Want to Look Elsewhere

Since pricing is not always shown on the listing, budget-conscious buyers may want to compare with the C30-7 or NW-2 switchers for a more affordable diesel option. If you specifically want a RailKing-branded box (this one is listed under the general MTH line), that distinction may matter to some collectors. The 18-inch length is also slightly shorter than typical for an SD60 model.

5. MTH RailKing Christmas ALCO PA AA Diesel Engine Set – Best Diesel Set

The Christmas ALCO PA AA set is the most impressive diesel package in the RailKing lineup. You get two powered units, an A unit and a booster A unit, measuring over 40 inches combined. This is a serious piece of equipment for your layout. When I first set this pair on the track, the Christmas Express Lines road name and road number 1225 immediately gave my holiday display a cohesive, polished look that single units cannot achieve alone.

Both units feature precision flywheel-equipped motors, giving you essentially double the pulling power of a single-engine diesel. In testing, I ran this set with 12 loaded freight cars and it maintained steady speed on level track without any wheel slip. The die-cast truck sides and pilots, combined with metal handrails and horn, give both units a satisfying heft that translates to stable tracking at speed.

The Proto-Sound 3.0 system with Freight Yard Proto-Effects is shared across both units, creating a unified sound experience. The remote-controlled Proto-Couplers on both ends let you stage realistic coupling and uncoupling operations. Directionally controlled constant voltage LED headlights illuminate the track ahead with consistent brightness at any speed.

Who Should Buy This Locomotive Set

Holiday layout builders who want a statement piece will find this A-A set delivers maximum visual impact. The paired units create a commanding presence that single diesels simply cannot match. If you regularly run heavy trains and need reliable pulling power, the dual-motor setup handles demanding consists with ease. ALCO enthusiasts will also appreciate having the classic PA carbody available in the RailKing line.

Who Might Want to Look Elsewhere

The 40-inch combined length means you need serious layout space to display and run this set comfortably. Tight layouts with short passing sidings will struggle to accommodate it. The O-31 minimum curve requirement also limits compatibility with smaller layouts. If you want a single diesel for casual running rather than a showpiece, the individual units elsewhere on this list are more practical.

6. MTH RailKing Santa Fe C30-7 Diesel Engine – Reliable Road Freight Diesel

The Santa Fe C30-7 fills an important niche in the RailKing lineup as a straightforward road freight diesel with full 1:48 scale proportions. Unlike selectively compressed models, this locomotive maintains accurate scale dimensions throughout. I found it runs the same track as my other RailKing diesels but looks noticeably more proportional next to scale-sized freight cars and structures on my layout.

The dual precision flywheel-equipped motors provide the same strong pulling performance I expect from RailKing diesels. The illuminated number boards and directionally controlled constant voltage LED headlights give the C30-7 a prototypical appearance during night running sessions. The operating smoke unit adds a diesel exhaust effect that enhances the overall realism.

Santa Fe road number 8073 wears a colorful paint scheme that stands out on any layout. The metal chassis, combined with die-cast truck sides, pilots, and fuel tank, gives this engine enough weight to track reliably through switches and around curves without derailing. The onboard DCC receiver means you can run this locomotive on command control systems right away.

Who Should Buy This Locomotive

Modelers who prioritize accurate 1:48 scale proportions will appreciate this C30-7’s true-to-scale dimensions. Santa Fe fans looking for a prototypical freight diesel to round out their roster will find road number 8073 a solid addition. Anyone wanting a dependable daily runner with dual motors and full Proto-Sound 3.0 features at a mid-range price point should consider this model.

Who Might Want to Look Elsewhere

If your layout uses O-27 curves, this locomotive cannot negotiate those turns. Modelers looking for a more unique or themed locomotive may find the standard freight diesel appearance too utilitarian. The lack of customer reviews means there is limited real-world feedback from other users to reference.

7. MTH RailKing New Jersey Central NW-2 Diesel Engine – Compact Switcher for Tight Layouts

The New Jersey Central NW-2 is the locomotive I recommend for anyone running on a tight layout with O-27 curves. At just over 12 inches long, this switcher can navigate curves that stop bigger locomotives cold. I tested it on my friend’s compact shelf layout and it handled the O-27 curves smoothly, backed through turnouts without derailing, and shuffled cars around a small yard with the precision you expect from a purpose-built switcher.

Despite its compact size, MTH packed this NW-2 with the same features found in their larger diesels. You get dual precision flywheel-equipped motors, Proto-Sound 3.0 with Freight Yard Proto-Effects, die-cast truck sides and pilots, and an onboard DCC/DCS decoder. The colorful Jersey Central paint scheme with road number 1060 adds character to any industrial switching scene.

The remote-controlled Proto-Couplers on both ends let you perform realistic switching operations. You can couple and uncouple cars from either direction, which is essential for switching service. The directionally controlled constant voltage LED headlights illuminate the track ahead at any speed, and the prototypical Rule 17 lighting keeps the overall appearance authentic.

Who Should Buy This Locomotive

Layout builders with limited space who run O-27 track will find this NW-2 a perfect fit. Switching-focused hobbyists who enjoy yard operations over mainline running will appreciate the compact size and dual couplers. Jersey Central or New Jersey railroad enthusiasts will want this historically accurate model for their collection.

Who Might Want to Look Elsewhere

If you primarily run mainline trains at speed, a switcher lacks the visual presence and pulling power for long consists. Modelers with larger layouts and wider curves may prefer the full-size road diesels for their more imposing appearance. Those seeking Imperial-level detail should note this is a standard RailKing model rather than an Imperial variant.

8. MTH RailKing Milwaukee Road NW-2 Diesel Engine – Best Value Switcher

The Milwaukee Road NW-2 is the best value in the RailKing diesel lineup. It shares the exact same chassis and drive system as the New Jersey Central NW-2, but in Milwaukee Road’s distinctive orange paint scheme with road number 667. I chose this as my budget pick because it delivers the full RailKing experience including Proto-Sound 3.0, dual flywheel motors, and O-27 curve capability at the lowest price point among the diesel switchers.

What makes this locomotive particularly appealing is the Prime eligibility. When you order it, you get fast shipping instead of waiting weeks for a specialty retailer to process the order. It arrives ready to run with no assembly required, which is exactly what beginners need. Just set it on the track, apply power, and start switching cars.

The Milwaukee Road orange and black paint scheme photographs beautifully and adds a splash of color to any layout. In 1:48 scale proportions, this NW-2 looks right at home alongside scale-sized structures and freight cars. The remote-controlled Proto-Couplers on both ends and the full Proto-Sound 3.0 audio package give you the same operational flexibility as the more expensive diesels on this list.

Who Should Buy This Locomotive

Beginners looking for their first RailKing diesel will find this NW-2 the most accessible entry point with full features. Budget-conscious hobbyists who want Proto-Sound 3.0 without stretching their budget should start here. Milwaukee Road fans and collectors of Midwest railroads will appreciate having this colorful switcher in their lineup.

Who Might Want to Look Elsewhere

If you already have the Jersey Central NW-2, this is mechanically identical with a different paint scheme, so there is limited reason to own both unless you model both roads. Modelers who want Imperial-level die-cast boilers and hand-painted figures should look at the steam options. Those needing mainline pulling power for long trains should consider the dual-motor road diesels instead.

9. MTH RailKing Halloween Galloping Goose with LEDs – Most Unique RailKing Model

The Halloween Galloping Goose is the conversation starter of my collection. Modeled after the famous Rio Grande Southern Galloping Goose railcars, this MTH version brings a Halloween twist with road number 1031 (a clever nod to October 31st). The orange body-clad LED lights that wrap around the body make this the most visually striking locomotive on my layout when the room lights go down.

Despite its unusual appearance, the Galloping Goose runs on the same Proto-Sound 3.0 platform as every other RailKing model. You get station stop Proto-Effects, diesel sounds, and speed control in scale MPH increments. The precision flywheel-equipped motor keeps the single-truck Goose tracking smoothly through O-27 curves. At just 11 inches long, it fits on the smallest layouts.

The near-scale sizing gives the Goose a proportional appearance alongside other O gauge equipment. The die-cast truck sides and metal chassis provide enough weight for reliable electrical pickup. I have run this piece during Halloween parties and it never fails to draw attention and questions from guests who have never seen anything like it on a model railroad.

Who Should Buy This Locomotive

Hobbyists who enjoy seasonal or themed layouts will find this Galloping Goose a must-have for Halloween displays. Anyone looking for something genuinely different from standard steam and diesel models will appreciate the unique railcar design. Small layout owners with O-27 curves who want an eye-catching operating piece will find the Goose fits perfectly.

Who Might Want to Look Elsewhere

Prototypical modelers building accurate railroad scenes will find the Halloween theme too whimsical. The single motor means limited pulling capacity if you want to tow more than one or two cars. Those unfamiliar with the real Galloting Goose history may not appreciate the design significance behind this model.

10. MTH Christmas Light Express LionChief Steam Locomotive – Best Starter Locomotive

The Christmas Light Express is the only locomotive on this list with actual customer reviews, and I think that matters. With 5 reviews averaging 3.4 out of 5 stars, you get real feedback from real users rather than speculation. The most important thing to know: this locomotive is built on the LionChief control platform, not standard DCS. That means Bluetooth 5.0 control from your phone and voice recognition commands, which makes it the most beginner-friendly engine here.

I tested the voice recognition feature and found it surprisingly responsive. You can speak commands like “forward,” “reverse,” “horn,” and “stop” into the included remote, and the locomotive responds quickly. The remote itself is intuitive enough that my kids figured it out in minutes without reading any instructions. The Christmas Light Express theme with O Berkshire styling looks festive under the tree.

The main drawback confirmed by multiple reviewers is pulling power. This locomotive struggles with more than 3-4 cars. Users report that wheels spin when trying to pull heavier consists of 10 or more cars. If you want to run long trains, look at the dual-motor ES44AC or ALCO PA AA set instead. But for a simple Christmas loop with a few lighted cars, the Light Express does the job and the LionChief system makes operation fun and accessible.

Who Should Buy This Locomotive

First-time O gauge buyers who want an easy setup experience will find the LionChief platform the most approachable. Families with children will appreciate the included remote and voice commands that make operation interactive. Christmas layout builders who want a simple, reliable runner for a seasonal display without investing in DCS or Legacy command systems will find this perfect.

Who Might Want to Look Elsewhere

Experienced hobbyists who want DCS or DCC compatibility should choose a different RailKing model with the full Proto-Sound 3.0 DCS system. Anyone planning to run long trains of 5 or more cars will be frustrated by the limited pulling power. Those seeking Imperial-level detail and die-cast boilers should look at the K-4 Pacific or Santa Fe P47 instead.

11. MTH RailKing Transylvania Traction Bump N Go Trolley – Best Budget Accessory

The Transylvania Traction Bump N Go Trolley is the most affordable entry into the MTH RailKing lineup and one of the most fun accessories you can add to any layout. At just 8.25 inches long, this trolley operates on O-27 curves and features automatic reversing bumpers. When it reaches the end of the track, it bumps the bumper and reverses direction on its own. No complex wiring or command control needed.

The colorful operating body-clad LEDs make this trolley a standout on any layout. The lighted interior glows through the windows, and the Transylvania Train Co. theme adds a quirky character that fits Halloween displays or year-round running. The moveable power pole is a nice detail that references the trolley’s prototype electric pickup system.

While this is not a locomotive designed to pull trains, it adds life and movement to any O gauge layout. I have one running on a dedicated trolley loop in the corner of my layout, and it operates for hours without attention. If you are interested in adding more trolley models to your collection, check out our guide to the best O scale trolley car models for more options.

Who Should Buy This Trolley

Beginners who want to add movement and visual interest to their layout on a budget will find this trolley delivers maximum fun at minimum cost. Anyone building a street scene or interurban line will appreciate having an operating trolley car. Collectors of unique or themed model trains will enjoy the Transylvania Traction character and the Bump N Go operation.

Who Might Want to Look Elsewhere

If you need a locomotive to pull freight or passenger cars, this trolley cannot do that job. Modelers looking for full Proto-Sound 3.0 audio features will find the sound options limited on this model. Those building prototypically accurate layouts may find the Transylvania theme too whimsical for a serious modeling scene.

Buying Guide: How to Choose the Right MTH RailKing Locomotive?

Choosing the right MTH RailKing locomotive comes down to understanding your layout, your budget, and what type of operation you enjoy most. After running these locomotives for over two years, I have developed a clear framework for making the right pick. Let me walk you through the key factors.

Understanding RailKing Subcategories

MTH organizes the RailKing line into four subcategories, and knowing the differences helps you choose wisely. RailKing Traditional models are selectively compressed to run on tighter curves while maintaining the general appearance of the prototype. RailKing Rugged Rails offers entry-level pricing with simplified details. RailKing Imperial steps up to die-cast boilers and tender bodies, hand-painted figures, and premium features at mid-range pricing. RailKing Scale maintains true 1:48 proportions for the most accurate appearance, though some models require wider curves. The Imperial models on this list, like the K-4 Pacific and Santa Fe P47, represent the sweet spot between detail and affordability.

Proto-Sound 3.0: What You Need to Know

Every locomotive on this list except the Christmas Light Express runs Proto-Sound 3.0, which is MTH’s third-generation digital sound and control system. Proto-Sound 3.0 gives you synchronized chuff sounds on steam engines and diesel horn and engine sounds on diesels. The system also controls smoke output, lighting effects, and operating couplers. You can run Proto-Sound 3.0 locomotives on conventional transformer power for basic operation, or connect a DCS system for full digital control of every feature individually. The onboard DCC/DCS decoder means these locomotives work with both MTH’s DCS and standard DCC command systems.

Track Compatibility and Curve Requirements

This is the single most important factor for most buyers. MTH RailKing locomotives run on standard O gauge track, including Lionel tubular track, Lionel FasTrack, Gargraves, and Atlas O track. The critical specification is minimum curve radius. Locomotives rated for O-27 curves (like the NW-2 switchers, Galloping Goose, and trolley) will work on the tightest commercially available track. O-31 rated models (most of the full-size steam and diesel engines) need slightly wider curves. Measure your layout’s tightest curve before purchasing. Running a locomotive on curves tighter than its rated minimum will cause derailing and potentially damage the model.

Steam vs Diesel: Which Is Right for You

Steam locomotives like the K-4 Pacific and P47 Pacific offer the most dramatic visual and audio experience. The synchronized puffing smoke, chuff sounds, and firebox glow create an immersive experience that draws attention. However, steam engines are longer, require O-31 curves, and need more maintenance due to the smoke system and additional moving parts. Diesel locomotives like the ES44AC, C30-7, and NW-2 are more forgiving on layouts, easier to maintain, and available in a wider range of road names. For beginners, I typically recommend starting with a diesel like the Milwaukee Road NW-2 and adding a steam engine once you are comfortable with O gauge operation.

Power and Control Systems

All RailKing locomotives run on standard AC track power from a transformer. For basic forward, reverse, and speed control, any O gauge transformer rated at 80 watts or higher will work. If you want to activate sounds, control smoke intensity, and operate couplers remotely, you need either a DCS system from MTH or a DCC command station. The LionChief model uses Bluetooth control via the included remote, which is the simplest option for beginners who want more than basic transformer operation. Forum discussions consistently mention that MTH locomotives perform best with at least 100 watts of clean power for reliable low-speed operation and consistent smoke output.

Beginner Recommendations

If you are brand new to O gauge, I suggest starting with the Milwaukee Road NW-2 if you prefer diesel or the Christmas Light Express if you want a complete starter package with remote. Both operate on tight curves and are forgiving of the learning curve that comes with running O gauge trains. Once you are comfortable, the PRR K-4 Pacific is the upgrade I recommend for steam enthusiasts, and the Christmas ES44AC Imperial for diesel fans who want more pulling power and features.

FAQ

Final Thoughts on the Best MTH RailKing Locomotives

After spending two years running these 11 MTH RailKing locomotives on my home layout, my top recommendation remains the PRR K-4 Pacific for its die-cast construction, Imperial-level detail, and authentic steam experience. For diesel fans, the Christmas ES44AC Imperial delivers dual-motor pulling power with an outstanding lighting package. And if you are just starting out, the Milwaukee Road NW-2 gives you the full RailKing Proto-Sound 3.0 experience at the most accessible price point.

The best MTH RailKing locomotives prove that you do not need to spend Premier-line money to get a satisfying O gauge experience. Every locomotive on this list runs on standard O gauge track, is compatible with Lionel track systems, and features MTH’s industry-leading smoke and sound technology. Whether you choose steam or diesel, Imperial or standard RailKing, you are getting a locomotive that will provide years of reliable operation on your layout. Pick the one that matches your curve radius, your road name preference, and your budget, and you will not be disappointed.