Fujikura Speeder 565 vs 665

The Fujikura Speeder 565 and Speeder 665 are two of Fujikura’s most well known shafts. They are very popular amongst casual and higher level players alike. But what are the differences between the two, and how will each impact your golf game.

I compared both of these shaft’s specs to see what the main differences are as well as who they are better for.

What are the differences between the Fujikura Speeder 565 and 665? The main differences between the Fujikura Speeder 565 and Fujikura 665 is that the Speeder 565 weighs less, but has more torque and the Speeder 665 weighs more but has lower torque. Other than that both shafts are virtually identical in the rest of their specs.

Flex: Speeder 565 vs Speeder 665

One of the big similarities between these two shafts is in the flex options. Both shafts have 4 different flex options. These options are “light, regular, stiff, and extra stiff”. For those that don’t know, flex is the amount of bend that the shaft has. 

A shaft with more flex is better for players with slower swing speeds, and a shaft with a higher amount of stiffness is better for players with higher swing speeds. If you have high swing speeds, but choose a shaft that has too much flex, you risk reducing your accuracy. 

If you have low swing speed and choose a shaft that is too stiff, then you risk losing speed on impact, thus losing distance.

Weight: Speeder 565 vs Speeder 665

The first real difference between these two shafts is in their weight. The weight of a golf shaft does play a role in how you swing, but we will get into that in a second. The Fujikura Speeder 565 has 57, 59 and 60 grams options. Depending on what you are used to, these options may suit you well.

The Fujikura Speeder 665 has 61, 63, 66, and 67 gram options. Notice that there is a 10 gram difference between these two shafts. One of the big impacts, as you increase the weight of your shaft, is that you will lose some swing speed, thus losing distance in your shot. However, with the lighter shaft, you may be able to swing faster, but it could be a bit more inaccurate.

So, if you are looking to preserve your swing speed and distance, then the Fujikura Speeder 565 is for you. However, if you don’t mind the heavier shaft and want a bit more of a stable swing, then the Speeder 665 is for you.

Launch: Speeder 565 vs Speeder 665

Another similarity between these two shafts is the launch angle. Both shafts have a Mid and Mid/Low launch angle option. The launch angle is essentially the amount of degrees of lift the ball will get on impact. My understanding is that it is similar to the loft of a club head.

Because these are both driver shafts, they are generally supposed to keep the launch angle low, which is why they only come in Mid and Mid/Low options. There is only a few degrees difference between these two. So if you are looking to reduce the height of your drive, then the Mid/Low option is better for you. But if you are looking to get a bit more height on your drive, then the Mid option is better for you.

Spin: Speeder 565 vs Speeder 665

Similar to the launch, both shafts share the same amount of spin. In other words, both of these shafts are designed to give you the same amount of spin on your shot. With more spin, the ball is more likely to climb into the air compared to a shaft with a lower amount of spin. Once again, depending on what you are looking for (more height or less height on the drive), either of these shafts will suit you.

Torque: Speeder 565 vs Speeder 665

The last major difference between the Speeder 565 and the 665 is the torque options. For those that don’t know, torque in a golf shaft is essentially how prone the shaft is to twisting on impact. A shaft with lower torque is less prone to twisting. Higher torque is more prone to twisting on impact. 

Lower torque shafts are better for players with higher swing speeds and higher torque shafts are better for players with slower swing speeds. In the case of these two shafts, the Speeder 565 offers 5.8 and 6.0 torque options. The Speeder 665 offers torque options of 4.0 and 4.1. These two torques are significantly different from one another.

If you are someone who has a lower swing speed, then the higher torque (fujikura 565) is better for you. However, if you are known to have higher swing speeds, then the lower torque option is much better for you (fujikura 665).

Legality: Fujikura Speeder 565 vs 665

I double checked with the USGA and R&A equipment rules to make sure that both of these shafts are legal. According to the rules, both of these shafts are considered legal to use for any casual, high-level amateur, and professional golf games. So, feel free to use either of these shafts as they are totally legal to use.