Project X IO vs Modus 105: Which Golf Shaft is Right for You?

Both Project X IO and Modus 105 irons have been highly praised by golfers around the world, but what’s the differences?

The main differences between Project X IO and Modus 105 golf shafts are that Project X IO has a stiff tip and a softer mid-section for stability and low trajectory, while Modus 105 has a softer tip for a higher launch angle and more spin, offering a balance of distance, accuracy, and feel.

In this blog post, we will compare and contrast these two shafts to help you determine which one is the best fit for your game. 

project x io vs modus 105

Project X IO vs Modus 105: What are the differences?

The Project X IO Steel Iron Shaft and Nippon Modus 105 are both high-quality steel shafts designed for golf clubs, but they differ in several key aspects. Here are the main differences between the two:

FeatureProject X IO Steel Iron ShaftNippon Modus 105
ManufacturerTrue TemperNippon Shaft
Weight95-115 grams (varies by flex)Approximately 105 grams
Flex OptionsRegular, Stiff, Extra StiffRegular, Stiff, Extra Stiff, Tour
Bend ProfileUnique, penetrating ball flightMid-launch, mid-spin
Material and TechnologySteel with Variable Wall TechnologySteel with Multi Heat Treatment Technology
PriceGenerally more expensiveGenerally less expensive
TorqueLower torqueSlightly higher torque
Step PatternDistinct step patternTraditional, smooth step pattern
Target AudienceLow to mid-handicap playersBroader range of golfers
AestheticsBrushed steel finishChrome finish


The Project X IO Steel Iron Shaft is manufactured by True Temper, a well-known American brand in the golf industry, while the Nippon Modus 105 is made by Nippon Shaft, a renowned Japanese company specializing in golf shafts.


The Project X IO shafts are typically available in various weights, ranging from around 95 to 115 grams depending on the flex.

The Nippon Modus 105, as the name suggests, has a weight of around 105 grams.

The lighter shafts are generally designed to generate more clubhead speed, while heavier shafts offer more control and stability.


Project X IO shafts are available in different flex options, including regular, stiff, and extra stiff.

Nippon Modus 105 shafts also come in various flex options like regular, stiff, and extra stiff, but they also offer a unique “Tour” flex, which is designed for players who require additional control and accuracy.

Bend Profile

The Project X IO shafts have a unique bend profile that is designed to provide a more penetrating ball flight and improved trajectory control.

The Nippon Modus 105 has a mid-launch, mid-spin profile, which is intended to deliver a more balanced performance between distance and control.

Material and Technology

Both shafts are made from high-quality steel, but they utilize different technologies in their construction.

The Project X IO shafts use a unique Variable Wall Technology that optimizes the thickness of the shaft walls throughout the length of the shaft, resulting in a lightweight yet stable shaft.

The Nippon Modus 105 employs Multi Heat Treatment Technology, which strengthens the shaft and improves its overall performance.


Prices for both shafts may vary depending on the retailer, but generally speaking, the Project X IO Steel Iron Shaft tends to be more expensive than the Nippon Modus 105.

Modus 105 vs project X IO: Which one is the game improvement shaft?

Choosing the right shaft to improve your game depends on your individual swing characteristics, skill level, and personal preferences.

Both the Project X IO Steel Iron Shaft and Nippon Modus 105 offer unique benefits and can help improve your game, but it’s essential to select the one that best suits your needs.

Here’s a general guideline on which shaft might be a better fit for you:

  • Project X IO Steel Iron Shaft

If you are low to mid-handicap golfer seeking improved control, accuracy, and a more penetrating ball flight, the Project X IO shafts might be a better choice.

These shafts are designed for players who prioritize control and stability, with a unique bend profile that offers a firm feel and a lower trajectory.

  • Nippon Modus 105

If you’re looking for a more balanced performance, with a combination of distance and control, the Nippon Modus 105 could be a better fit.

These shafts cater to a broader range of golfers and feature a mid-launch, mid-spin profile that provides a good balance between distance and accuracy.


Here are some frequently asked questions (FAQs) about the Project X IO Steel Iron Shaft and Nippon Modus 105:

Can I use these shafts for both irons and woods?

While both shafts are primarily designed for irons, some golfers may use them for hybrid clubs as well.

However, they are not intended for use with fairway woods or drivers, as those clubs typically require shafts with different specifications.

How do I know which flex option is right for me?

The ideal flex for your shaft depends on your swing speed and personal preferences.

As a general guideline, slower swing speeds typically benefit from a more flexible shaft, while faster swing speeds require stiffer shafts for optimal performance.

Consulting with a professional club fitter can help you determine the best flex for your swing.

Can I mix and match shafts from different manufacturers in my iron set?

Yes, it’s possible to mix and match shafts from different manufacturers in your iron set. However, doing so may result in inconsistent performance across your clubs.

It’s usually recommended to use a consistent shaft model throughout your iron set for better control and feel.

How can I ensure that I have the correct shaft length for my clubs?

The ideal shaft length depends on your height, arm length, and posture. A professional club fitting session can help you determine the best shaft length for your needs.

In general, standard off-the-shelf shaft lengths work well for most golfers, but custom fitting can further optimize performance.

Final thoughts

Ultimately, the best way to determine which shaft is right for you is to consult with a professional club fitter.

They can analyze your swing, discuss your goals, and recommend the most suitable shaft based on your specific needs.

Testing both shafts on a launch monitor can also provide valuable insights into which one works best for you.

Keep in mind that improving your game requires not only the right equipment but also consistent practice, proper technique, and a focus on the fitness and mental aspects of the game.