Harley-Davidson is one of the most recognized motorcycle brands across the globe. Among their many bike models, the FXR and Dyna series are highly popular partly because they are easy to customize.
But is there any similarity and difference between FXR vs Dyna? Yes. FXR and Dyna bikes are similar in many ways. For example, they both have a rear suspension, exposed shocks, and a V-twin motor. However, the two also differ in engine capacities, power output, frame designs, transmission, and fuel capacity.
Wait, that’s not all! There are more differences between FXR and Dyna bikes. So, read our guide to learn more.
FXR Vs Dyna Differences Table
Below, we will quickly look at the FXR (Factory Experimental Racing) and Dyna differences so you know how they compare.
| Features | FXR | Dyna |
| Years Available | 1981 to 1995 | 1991 to 2018 |
| Engine Type and Capacity | Shovelhead and V-Twin Evolution with a 1,340 cc capacity | Twin cam 103 pushrod V-Twin with a 1,449 to 1,690 cc capacity |
| Power and Torque Output | 46 to 58 horsepower and 67 lb.-ft torque | 77.78 horsepower and 81 lb.-ft torque |
| Transmission | 5-speed manual gearbox | 5 and 6-speed manual transmission |
| Frame Design | Small, triangular-shaped rigid frame | Mild steel-tubular frame. |
| Fuel Capacity | 3.96 to 4.2 gallons | 4.2 to 4.70 gallons |
| Handling and Maneuverability | Better handling and maneuvering around corners | Has a low tire pressure feeling when cornering |
| Parts Availability | Hard to find | Easy to find |
| Noise Level | Higher noise levels and vibrations | Lower noise and vibrations |
| Weight | Relatively lighter | Heavier than FXR |
| Price | More expensive | A little cheaper than FXR |
FXR vs Dyna: A Detailed Comparison
The FXR and Dyna have so much in common and also a ton of differences between them, which include:
1. Years Available
The first FXR was made in 1981 as a 1982 bike model. And in 1995, Harley stopped its FXR production because the frame was a tad expensive to manufacture. Then, the Dyna series replaced the FXR.
On the other hand, the first Dyna model, FXDB Sturgis, was produced in 1991. Harley continued with the production of the Dyna lineup until 2018. Then, the Dyna was replaced by the Softail line.
2. Engine Type and Capacity
The FRX came with a Shovelhead engine initially. But later on, the bikes started using an 80-inch rubber-mounted V-Twin Evolution engine. Regarding the engine capacity, the bikes have about 1,340 cc or 82 cubic inches displacement.
As for the Dyna, it is equipped with a high-output Twin Cam 103 pushrod V-twin engine. The engine capacity ranges between 1,449 cc or 88.53 cubic inches and 1,690 cc or 103.13 cubic inches. So, overall, the Dyna motorcycles have sizeable engines than their FXR counterparts.
3. Torque and Power Output
The FXR engine produces output power ranging from 46 to 58 HP at 5,000 RPM. On the other hand, its maximum torque is around 67 lb.-ft at 3,600 rpm.
With the Dyna, the engine produces around 77.78 HP at 5,000 rpm of power output. As for the torque output, the Dyna boasts 81 lb.-ft. Therefore, the Dyna series engines are more powerful.
4. Transmission
Another FXR Vs Dyna difference is the transmission. All FXR bikes utilize a 5-speed transmission. However, while Dyna’s older models have a 5-speed gearbox, the newer models use a 6-speed transmission, referred to as ‘’Cruise Drive”.
The 6-speed gearbox is available in Dyna models produced starting from 2006. Therefore, the engine of Dyna’s newer models tends to run with lesser strain due to more gears.
5. Frame Design
At first glance, you can differentiate the FXR from the Dyna in its frame design. This is because the FXR bikes feature a twin shock, triangular-shaped frame that is highly rigid.
However, because the FXR frame was expensive to build, Dyna bikes feature a mild steel-tubular frame. While this frame is cheaper to produce, it is less rigid. And compared to FXR’s smaller-sized frame, the Dyna frame is a little longer.
6. Fuel Capacity
The FXR is equipped with a one-piece gas tank, boasting a fuel capacity ranging from 3.96 to 4.2 gallons.
On the other hand, the Dyna series fuel capacity ranges between 4.2 and 4.70 gallons. So, the Dyna gas tank can hold more fuel than the FXR, ensuring minimal stops just to refuel.
7. Handling and Maneuverability
Compared to the Dyna, the FXR models have better handling. This is because the FXR’s swingarm and engine stabilizer are directly mounted to the frame, giving the bike excellent rigidity. Thanks to its great handling, maneuvering around corners is easy with the FXR.
With the Dyna, the swingarm is mounted to the transmission and controlled by the shocks. Consequently, this reduces the bike’s stability, especially when riding hard. Even worse, when cornering, the Dyna series usually gives a low tire pressure feel, known as the ‘death wobble’.
8. Parts Availability
Finding replacement parts for the FXR series can be hard. This is because the bikes were discontinued a long time ago. And as it turns out, Harley Davidson does not stock or carry parts for bikes that old. But with extensive research, while referring to the parts catalog, you can find FXR parts.
With the Dyna series, the parts are readily available at any Harley-Davidson dealership. This is because the bikes have been in the market longer than the FXR models.
9. Noise Level
The FXR bikes are equipped with Evo motors. These engines sound like traditional Harleys. Not only do they make a lot of noise, but they also shake and vibrate.
However, Dyna does not use the same motor as FXR. Therefore, Dyna bikes have lower noise levels and vibration. They are almost dead silent compared to the FXR series.
10. Weight
Most of the Harley FXR models are considerably lighter than their Dyna counterparts. But how much does a Harley-Davidson weigh? Well, the FXR Super Glide has a dry weight of 551 lbs. On the other hand, the Dyna Super Glide has a 632 lbs. dry weight, ensuring stability even under a heavy load.
11. Price
Because of their rigid frame, the FXR series is very pricey. Their prices range from $22,000 to $8,650, depending on whether it’s new or used.
With the Dyna models, their prices range between $5,000 and $17,000, depending on the year model and bike’s condition.
Do The FXR and Dyna Have Any Similarities?
Yes. For example, apart from being manufactured by Harley Davidson, both bike series are no longer on the market today. The FXR series was discontinued in 1995, and the Dyna in 2018.
Additionally, with both bikes, you can customize them according to your preferences using aftermarket parts. For example, since the Dyna does not come with an engine stabilizer, you can add it for better rigidity.
With the FXR, you can customize it through performance upgrades. For instance, you can upgrade the exhaust systems and air filters. But to do this, you will need the Harley Stage 1 upgrade kit. Typically, the Harley stage 1 upgrade cost ranges between $1,000 and $1,500. Other similarities include:
- Exposed shocks
- 5-gear suspension for older models
- Equipped with a rear suspension
- Both use a V-twin engine
Which Is The Best Between FXR and Dyna?
Both bikes are about equal in reliability. Even so, most people who have tried both bikes swear by the FXR series. This is because its firm frame offers better stability and handling than the Dyna bikes.
Therefore, if you want a bike that can effortlessly tear up the road and carve corners, the FXR series is an excellent choice.
However, if you want a bike for cruising all day on the highway, you can get any Dyna series. These bikes have a more powerful engine than the FXR. In addition, their power output and torque are better than what FXR bikes offer.
FAQs
In this section, we will respond to commonly asked questions regarding how FXR vs Dyna.
Q: Is FXR faster than the Dyna series?
No. Dyna models are faster than FXR out of the box. However, the FXR bikes handle better. And with performance upgrades, they can ride as fast as the Dyna models.
Q: Which is a better cruiser bike between FXR and Dyna?
Both bikes belong to the cruiser category. However, the FXR is considered to be a better cruiser bike because of its superior handling capabilities. This means it is comfortable to ride long distances.
Q: Can you still find the FXR and Dyna in the market?
Yes. Although both models have been discontinued, you can still get pre-owned models in the used market. However, their availability may vary since some models are more sought after by bike enthusiasts.
Conclusion
FXR and Dyna bikes differ in many ways, making it easy to choose between the two. For example, they have different engine types and capacities, frame designs, and fuel capacities. Their weight, prices, power output, torque, handling, and noise level are also distinct.
But even with their many differences, the bikes are similar in numerous ways. After all, they are both made by Harley Davidson. That said, most bike enthusiasts swear that the FXR is the overall best compared to the Dyna series. This is partly due to their superior handling performance.