Milwaukee 107 Vs 103; Which One is Worth Your Money?

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If you are buying a new touring bike for yourself or wondering which engine could be the best, don’t worry.

Milwaukee 107 Vs 103

I have searched online and couldn’t find any comprehensive comparison of Milwaukee 107 and Milwaukee 103 engines, which could help me choose the best one. 

But don’t worry because I have worked harder to discover the differences between these engines to help you better understand which could be best for you. 

Let’s dive into:

Which is the Best Engine, the Milwaukee 107 or the Milwaukee 103?

Milwaukee 107 is the latest version of 103, and of course, it has more upgrades and advanced features than the previous model.

It is better in torque than 103, and many other performance features are included. 

If you still need clarification, read this comparison article until the end, and you can decide the better option.

Related: Milwaukee 107 vs 114 Comparision

Comparison Milwaukee 107 Vs 103

Features Milwaukee-Eight 107Milwaukee 103 
Displacement 107 cubic inches (1753 cc)103 cubic inches (1688 cc)
Bore 100 mm98.4 mm
Stroke 111.1 mm111.1 mm
Compression Ratio 10.0:19.6:1
Engine Torque 111 ft-lb (150 Nm) at 3250 rpm100 ft-lb (135 Nm) at 3000 rpm
Fuel System Electronic Sequential Port Fuel Injection (ESPFI)Electronic Sequential Port Fuel Injection (ESPFI)
Cooling Air Cooled or Liquid CooledAir Cooled 
Configuration V Twin V Twin 

There are many differences when comparing the Milwaukee 107 to the 103. The Milwaukee 107 has a high-performance motor delivers up to 2000 RPM, providing superior drilling speed. 

Its compact design and lightweight build enhance user comfort and reduce fatigue during prolonged use.

Additionally, it incorporates an LED light, improving visibility in low-light work conditions.

When we see the Milwaukee 103, while slightly less powerful, it delivers a commendable performance. Its motor offers up to 1500 RPM, sufficient for most drilling tasks. 

What sets the 103 apart is its extended battery life. Thanks to efficient power management, users can perform their tasks for a longer period without needing to recharge.

Furthermore, it sports a durable all-metal gear case, ensuring the tool can withstand tough job site conditions.

What is Milwaukee 107?

The Milwaukee-Eight 107 engine, manufactured by renowned motorcycle company Harley-Davidson, is a powerful and reliable V-twin engine known for its impressive performance. 

It features a displacement of 107 cubic inches (or 1753cc), making it one of the most potent engines in Harley-Davidson’s lineup.

Milwaukee 107 Vs 103

The engine is air-cooled with four valves per cylinder, allowing for increased airflow and improved performance.

Furthermore, the Milwaukee-Eight 107 offers a torque of 111 ft-lb at 3250 rpm, providing riders with robust power and acceleration.

In addition to its impressive power and performance, the Milwaukee-Eight 107 engine has various advanced features that make it different from its predecessors. 

It has a single chain-driven camshaft, hydraulic lifters, and a quick-release latch for easy access to the valve train. These features contribute to its overall reliability and ease of maintenance. 

Moreover, the engine’s electronic throttle control and dual spark plugs per cylinder contribute to its smooth and efficient operation.

The Milwaukee-Eight 107 engine is powerful and offers a sleek and modern design, making it a favourite among Harley-Davidson enthusiasts.

Its blacked-out finish gives it a bold and aggressive look, while the chrome accents add a touch of elegance. Its design also features an improved cooling system and a smoother ride quality.

The engine’s exhaust system also features a 2-into-1 design, providing improved exhaust flow and a deep, throaty sound.

Related: Harley 107 Engine Problems

What is Milwaukee 103?

The Milwaukee-Eight 103, commonly known as the Milwaukee 103, is an engine model produced by the Harley-Davidson.

This engine model became a staple for the Harley-Davidson touring range in 2012. It’s a V-twin engine with two cylinders arranged in a ‘V’ configuration. 

Milwaukee 107 Vs 103

The ‘103’ in its name represents its capacity of 103 cubic inches, equivalent to 1688cc, offering significant power and torque over its predecessors. 

The engine has air-cooled overhead valves with a displacement of 1,690 cc, a compression ratio of 9.7:1, and a torque of 132 Nm at 3250 rpm.

Related: Harley Davidson 103 Engine Problems

It stands out for its smooth, quiet operation and an improved cooling system that reduces heat for the rider and passenger.

The Milwaukee 103 engine features an improved single camshaft design, which reduces the number of moving parts and increases reliability. 

It also has a six-speed transmission and a helical-cut fifth gear for smoother shifting.

The engine’s advanced design incorporates a counter-balanced system to reduce vibration, making long rides more comfortable for the rider. 

The electronic fuel injection system gives precise throttle response and better fuel economy, making it more efficient than previous models.

The Milwaukee 103 engine is known for its power-packed performance, offering a thrilling experience on the road.

It’s used in Harley-Davidson touring motorcycles such as the Street Glide, Road Glide, Ultra Limited, and Tri Glide. 

These bikes are designed for long-distance tours and have features like cruise control, large fuel tanks, and spacious storage compartments. 

Related: Is the Harley 103 a Good Engine

Which One is Worth Your Money, Milwaukee 107 or 103?

When considering the value proposition of the Milwaukee 107 versus the 103, it’s crucial to consider each model’s specific features, durability, and performance. 

The Milwaukee 107, with its advanced specifications and enhanced features, might be a worthwhile investment for professionals seeking top-tier performance and longevity. 

On the other hand, the Milwaukee 103, while less technologically advanced, could be a cost-effective option for those requiring reliable performance without high-end features. 

Choosing between the two depends on your requirements and budget considerations.


Is the 103 better than 107?

103 is not better than 107 because Milwaukee 107 is an advanced engine with more torque, power, speed and many latest features.

The air cooling system is advanced in 107, which may decrease the overheating while riding long routes.

What CC is Harley 103?

Harley Davidson introduced its Milwaukee 103 (1690 cc) engine in 2010 and used it in Electra Glide Ultra Limited models, and later on, it was used in 2012 for Softail models of Harley Davidson.

How many cc is a 107 engine?

Harley Davidson introduced the Milwaukee 107 engine with 1750 cc for Street Glide, Street Glide Special and many other models of Harley. 


There is a clear difference between the Milwaukee 107 and Milwaukee 103 because 107 is a more advanced model than 103.

If you are fine with your budget, you should choose the 107 because it has the latest features, more torque and speed, and power.

In addition, these models have a modern cooling system, which helps prevent overheating while on long routes. 

But if you have a bit of budget problems, then 103 is also a good option, which could be better compared to 107 but quite better than previous engines.

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