It is hard to believe that just last year Nippon Shaft celebrated fifteen years of their N.S. PRO MODUS3 iron shafts. Over that time, we have not only seen the offerings under that umbrella expand, but also amass over 390 professional victories worldwide, becoming one of the most successful lines of steel shafts within all of golf.
This year, Nippon Shaft is adding a sixth option to N.S. PRO MODUS3 and it is their most unique yet.
What is MODUS3 ?

When it comes to Nippon Shaft, most golfers are quite familiar with the N.S. PRO MODUS3, if you are one of our readers, then you for sure are. However, the story behind MODUS3 is just as important as the performance that the iron shafts provide.
You see, these were Nippon Shaft’s answer to providing an option for the best ball-strikers out there, more specifically, from requests by PGA Tour players. Using their legendary skill and technology within their steel production, MODUS3 was created with the goal of achieving desired trajectory, proper distance, and pinpoint accuracy.
To accomplish such things, Nippon Shaft has designed multiple options for golfers based on needs including release type (early, mid, later) or desired trajectories and spin. However, as they have expanded, the MODUS3 Tour options have been separated into two different categories.

First, the “5” Series have what the company called “traditional” EI curves which are similar to other products out there, bringing a familiarity while also implementing the feel and precision of N.S. PRO. Those options consist of the Tour 105, 115, and 125. On the other side is the “0” Series, made up of the Tour 120, 130, and now 110, these shafts all have unique EI curves that are the first of their kind on the market.
Nippon Shaft N.S. PRO MODUS3 Tour 110 Shafts
Honestly, on paper, there is a lot to be intrigued about when it comes to the new Tour 110’s. Not only are they the sixth shaft in the MODUS3 arsenal, but they are also the third in the “0” Series. More than that though, this one is designed address an ever growing demographic when it comes to steel iron shafts, a design that can bring tour level spin rates with a strong/flatter trajectory, but do it in a lighter overall weight.


Nippon Shaft describes the Tour 110 as if the 120, 130, and 105 all got together and had a child. Being honest, that is an extremely interesting blend of shaft profiles that are all quite different from one another, so with that in mind it should surprise no one when reading that they had to create a totally new bend profile to accomplish this. In fact, there is no other iron shaft on the market which exists right now like the Tour 110, it is legitimately patentable innovation.
The N.S. Pro MODUS3 Tour 110 is meant for golfers who have higher trajectories and battle ballooning in their irons, specifically into the scoring clubs, as well as golfers who fight turning their shots too much. Historically, to address this you would likely go heavier, but contrary to what many believe, the trend even on Tour now is to go lighter, hence this one coming in 105g to 115g depending on flex. As for that profile, the Tour 110 is actually less rigid in the tip section, similar to the Tour 130, but much stiffer as it works into the mid-section with the goal of providing a familiar feel similar to the types of driver shafts most popular on Tour at the moment.
The Details
Nippon Shaft will be producing the N.S. PRO MODUS3 Tour 110 iron shafts in R (105g), S (110g), and X (115g) flexes and the shafts will have torque ratings of 1.8, 1.6, and 1.5 respectively. The shafts are currently set for an April 2025 release date, with the price TBD.
Very interesting. I’m in a 105 guy – so I think the profile will be the opposite of what fits me. But I love Nippon, so I’m gonna try it out just to see.
I love how there are must so many good shafts in this weight class these days. 10 years ago, there were a handful of options.
very interesting offering. I like 120 more than 105’s so it’d be fun to try these to see if I like them.
BIG emphasis here for people remains that these are a one of a kind EI profile. It’s proprietary and it done by anyone else, including Nippon, there’s nothing else in the lineup like this.
[QUOTE=”Jman, post: 12885596, member: 1579″]
BIG emphasis here for people remains that these are a one of a kind EI profile. It’s proprietary and it done by anyone else, including Nippon, there’s nothing else in the lineup like this.
[/QUOTE]
Looking back at the graph in your article, how often do we see EI profile curves for irons with that pronounced of a hump in the mid area?
[QUOTE=”amarkabove, post: 12885620, member: 75272″]
Looking back at the graph in your article, how often do we see EI profile curves for irons with that pronounced of a hump in the mid area?
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If have to go dig in and sort through, it’s not unheard of though, but this combination of all three segments of the golf shaft is truly unique
Great read [USER=1579]@Jman[/USER]
Not sure if these would be my ideal shaft, but I’d sure like to try them out.
Going to finally get these installed into some iron heads this week and get them out since I think, hope, I finally might be over all this constant sickness.
I’ve got a long list of questions about this profile I’m hoping to get to work finding the answers to.
[QUOTE=”Jman, post: 12913174, member: 1579″]
Going to finally get these installed into some iron heads this week and get them out since I think, hope, I finally might be over all this constant sickness.
I’ve got a long list of questions about this profile I’m hoping to get to work finding the answers to.
[/QUOTE]
What heads will they be going in?
[QUOTE=”amarkabove, post: 12913446, member: 75272″]
What heads will they be going in?
[/QUOTE]
Honma TW Tour V’s
[USER=1579]@Jman[/USER] were you able to get these out yet? Very interested in this shaft, not sure it’d pull me away from graphite but it’s a possibility I guess.
[QUOTE=”Kmench, post: 12922936, member: 56250″]
[USER=1579]@Jman[/USER] were you able to get these out yet? Very interested in this shaft, not sure it’d pull me away from graphite but it’s a possibility I guess.
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My entire house is sick now so I’ve not. They’re actually getting built out tonight/tomorrow so I can start testing the heads and shafts on Tuesday. At least that’s the plan!
I’m eager to get them on the monitor, I’ve got a lot of questions for sure.
I have the 105 in X in my Srixon irons and still love them
Would be interesting to see how different these are to the 105 if I ever had the chance