How Fast Can a Harley Davidson Forty-Eight Go? You Won’t Believe It!

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If you’re looking for the Harley Davidson Forty-Eight top speed. Then you already know!

The Harley motorcycles are designed for comfort and with higher speeds. But the question is, what is top speed? In this article, we will explore the top speed of the Harley Davidson Forty-Eight.

Harley Davidson Forty-Eight Top Speed

Let’s dive into it!

What Is Harley Davidson Forty-Eight Top Speed?

The top speed of the Harley Davidson Forty-Eight is around 105-110 mph (169-177 km/h). 

While it might not seem fast compared to other motorcycles on the market, it’s crucial to remember that the Forty-Eight is not designed to be a speed demon. 

With its bulky design and upright riding position, the Forty-Eight isn’t optimized for high speeds but is built for comfort and style.

Factors Which Affect the Speed of Forty-Eight

Like other motorcycles, the top speed of the Harley Davidson Forty-Eight is influenced by a combination of mechanical, aerodynamic, and environmental factors. 

Here’s a detailed look at the various factors that can affect its top speed:

1. Transmission and Gearing

The transmission system and the gear ratios can significantly affect the top speed of any motorcycle. 

If the gears are set for quicker acceleration, then the bike may have a lower top speed, while longer gears allow for a higher top speed, but it might compromise on acceleration. 

The maintenance of the transmission system also plays a crucial role, as worn-out gears or a malfunctioning clutch can decrease the bike’s performance.

2. Aerodynamics

The design and shape of the motorcycle influence how it cuts through the air. 

The Forty-Eight has a relatively minimalist and compact design to deliver maximum speeds. 

Harley Davidson Forty-Eight Top Speed

3. Weight and Load

The overall weight of the motorcycle, combined with the weight of the rider and additional cargo, can influence the top speed. 

A heavier load requires more power to move at the same speed as a lighter load. 

Therefore, reducing unnecessary weight or optimizing the weight distribution can help achieve a higher top speed.

4. Tire and Wheel Specifications

The tires’ type, size, and condition also affect the top speed. Generally, tires are designed for better grip and excellent cornering.

But they could reduce the top speed due to increased rolling resistance. 

On the other hand, smoother tires might increase top speed but compromise on grip.

5. Maintenance and Condition

A well-maintained motorcycle will always perform better than a neglected one. Regular maintenance ensures that all parts are functioning properly.

Clean air filters, fresh engine oil, and a well-maintained exhaust system also contribute to achieving the top speed.

Harley Davidson Forty-Eight Specs

The Harley Davidson Forty-Eight is a Sportster lineup member known for its iconic design and performance. 

It features various features which make it stand out from other motorcycles.

Here are some potential features that could elevate the Forty-Eight’s specs:

Engine Specs 

The Evolution engine powers the Forty-Eight. It features an air-cooled engine, Evolution V-Twin.

Its engine displacement is about 1202 cc, and the bore x stroke is about 88.9mm x 96.8mm.

It also has a Compression Ratio 10:1 and an Electronic Sequential Port Fuel Injection (ESPFI).

This engine is known for its low-end torque, delivering punchy performance.

The characteristic V-Twin rumble makes the Forty-Eight a joy to ride in urban settings.

Harley-Davidson does not release the exact horsepower figures, but the 1202 cc engine is known to produce around 73 lb-ft of torque at 3,500 rpm

The Forty-Eight also features a 5-speed transmission, which is well-suited for its rich torque engine. 

Harley Davidson Forty-Eight Top Speed

Fuel Consumption 

One of the most iconic features of the Forty-Eight is its 2.1-gallon (7.9 liters) fuel tank. 

This tank looks stylish but is smaller than many other motorcycle tanks, so you will need frequent fill-ups on a long ride. 

Regarding fuel consumption, Forty-Eight, depending on the model year and riding conditions, averages around 48 to 51 miles per gallon (mpg) or 4.9 to 5.5 liters per 100 kilometers (l/100km). 

However, fuel consumption varies based on riding style, road conditions, and maintenance.

Weight and Seat Height 

The Forty-Eight has a running weight (which includes all fluids and a full gas tank) of approximately 556 pounds (252 kg)

This weight gives the motorcycle a solid feel on the road, ensuring stability at higher speeds and during cornering. 

The weight distribution and its unique design provide a balanced ride, making it suitable for city commuting and longer rides.

One of the defining characteristics of the Forty-Eight is its low-slung seat, which offers a commanding and comfortable riding position.

The laden seat height is approximately 26.2 inches (665 mm); this low seat height benefits riders who prefer having both feet flat on the ground when stationary.

Additional Features 

Digital Dashboard 

The forty-eight offers a digital dashboard that could offer you more information at a glance. 

The dashboard includes a GPS navigation, real-time weather updates, smartphone music, and call-handling integration. 

Lightweight Materials

The lightweight materials such as carbon fiber or advanced alloys reduce the bike’s overall weight. 

It would improve fuel efficiency and enhance the bike’s agility and handling, making it even more fun to ride.

Enhanced Security Features

To protect against theft, the Forty Eight incorporates advanced security features such as keyless ignition with fingerprint or facial recognition, a built-in alarm system, and a GPS-based tracking system.


Which Harley has the highest top speed?

FXDR 114 Harley-Davidson is among the fastest models, with a top speed of around 159-160 mph. 

It can go from 0 to 60 in only 2.5 seconds, which makes it the fastest production in the Harley line.

What is the full speed of Harley-Davidson?

Harley-Davidson’s top speed varies by model, but some models reach over 168 kmph. However, specific speeds depend on the bike’s design and modifications.

What can Harley go 200 mph?

The 1995 Buell Harley set a record to go over 202.989 mph, and it became the first motorcycle in the Harley lineup to cross 200 mph with less than 1650 cc.

Wrapping UP 

The Harley-Davidson Forty-Eight, part of the Sportster lineup, is renowned for its iconic design and performance. 

While it’s not built for extreme top speeds like some sports bikes, its top speed is impressive for its category. 

Its top speed is around 110 mph, depending on conditions and modifications.

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