S2S Red Graphite Wood, Iron & Hybrid Shafts

S2S-Red-Wood-Shaft-mainS2S Red Graphite Wood  & Iron Shafts

A Unique Stiff Butt/Soft Center/Very Stiff Tip Design for Better Players Which Plays Stiff for Control but does not Feel Stiff


  • S2S Red designed with a unique, different bend profile – the majority of shafts for players with better swing fundamentals follow a similar progression of stiffness of butt firm/center firm/tip stiff over their length.  The butt stiff/center soft/tip stiff design of the S2S Red breaks this tradition to offer the better player a high performance shaft for better control with solid, not too stiff feel.
  • S2S Red shafts are for golfers with an above average to forceful transition and average to fast tempo with a later to very late release to deliver more clubhead stability at impact for control and accuracy but without a “boardy stiff” feel.
  • Fitting difference between S2S Red and S2S Black – the S2S Red and the S2S Black shaft designs can both be played by any golfer with a later to very late release, but the S2S Red is a better fit for the golfer who is a little to a lot more forceful and aggressive on the downswing while the S2S Black is a better fit for the golfer with an average to slightly above average level of downswing aggressiveness.
  • S2S Red iron shafts offer the same butt stiff/center soft/tip stiff design in a heavier > 100g shaft weight for players who wish to switch from steel who are comfortable with a little heavier total weight in the irons.
  • S2S Red Hybrid shafts for players with a very late release with average to above average transition and tempo force with average strength.

S2S Shaft Trim Charts



Ratings and Reviews

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Rating: 4.1/5 (38 votes cast)


S2S Red Graphite Wood, Iron & Hybrid Shafts, 4.1 out of 5 based on 38 ratings


  1. I looked at the bend profile of the S2S Red and S2S Black 65. Both shafts are rated for the same club head speed, transition force and tempo. I understand that Red has a much firmer tip and would suit people with a very late release. But the butt and middle design are very different for the two shafts yet have the same transition and tempo ratings. What differences do the butt to middle profile designs of the two shafts bring for feel and performance giving that a golfer has aggressive transition and tempo and have a late release of the club.

    Thank you


      If you look closely you can see that the transition, tempo and release ratings for the REd go up to 3 while for the Black they stop at 2.5. That’s my rating way to say that the Red can play a little stiffer and hence if the player is above average for downswing aggressiveness in the swing along with having a late release, the Red is perhaps the better of the two. The Red is quite unique in that it’s middle section is soft. That mutes the stiffness of the butt and slightly the upper tip section as well when the golfer releases the club aggressively to the ball. I would say that if you are a very aggressive swinger (a definite HITTER), then fine, try the Red. But if you are just kind of average in downswing aggressiveness then go with the Black. Either than or if your speed would normally put you into a Black S and you are not that aggressive on the downswing, then you could go with a Red R but tip it 3/4″ so it would be in between Red R and Red S.

      Hope this helps,

    • TOM

      Thank you for your reply. I now have a better understanding of what the two shafts are designed for. So if we have 2 shafts, one with a Stiff butt and soft mid and the other is the other way around would they perform and feel more or less the same?


      Theoretically it could be possible to get very close in duplicating a butt stiff/mid soft to a butt soft/mid stiff but it would not ever be exactly the same. That’s because of the relationship between actual stiffness and the diameters and wall thickness down the shaft. To a perceptive player, it would feel a little different as he put his transition force on the club and released it to impact.


  2. Tom,
    I now have a stock of the S2S Red Stiff wood shafts in my workshop – to possibly demo and convert a couple customers who swing harder than I do! My last order From Diamond shipped me two Red Stiff iron shafts mistakenly instead of the two Red Stiff woods that I had ordered. Of course, they bent over backwards to quickly send me what I had ordered. We get great customer service from Sharon over in the U.K.
    Anyway – I was fitted for Black Regular in the irons because I had to learn (with old steel Dynamic Stiffs and Regulars) not to move as hard at the ball on those shorter shafts (now revisiting that learning by the way thanks to my Red Stiff woods).
    I am wondering if these Red Stiffs might make excellent wedge shafts for me in lowering ball flight – especially on the light touch shots near the green? I have always hit my wedges accurately but way high like mortar rounds, so lowering the launch a bit as I firm up the feel is not an issue for me on them. In fact, I still cling to the seemingly lost art of bump and run 8-irons just off the green when needed.

    • DAVID
      Once you get down to the shorter irons and wedges, the shaft’s flex plays a very much less significant role in the performance of the club. All iron shafts are twice as stiff in actual bending amount for the same flex than wood shafts. And then once you get down to the shorter length irons and wedges, that shorter shaft length plus the fact those shafts are cut more from the tip end anyway means that there is very little bending going on in the wedges. In short irons and wedges, as long as the weight of the shaft is right for the golfer’s tempo and strength, the flex could be 1 to 2 full flexes too stiff for the golfer’s swing speed and nothing bad is going to happen. The golfer may not even feel any difference in flex at those short lengths as well. So if you have a need to use some shafts in some wedges, you could use the Red iron shafts.

    • David, I am in need of the S2S Red Stiff shafts (woods, irons and hybrid…in that order of priority) if you have any that are not being used or have not already been spoken for. Thanks forrestgt@hotmail.com

  3. I’m confused because you use 5 iron swingspeed of 95-110 to help with fitting for this shaft. Often people who swing a driver this fast use a stiff, but you are using 5 iron ss. My driver ss is 115 and this shaft seems perfect as I like shafts that feel softer and yet are very stiff tipped. So is your “s” flex what some would call an x flex?

    • William
      If in the iron shaft listings it says 95-110, then I apologize for the miss print. That is a driver clubhead speed that is designated for the Red S shaft for woods, not for the irons. Unfortunately I can’t help you more with this because we have made the decision to discontinue the Red iron and hybrid shafts and there are none of the iron shafts left now. Unfortunately the shaft had too few followers because it was a shaft designed pretty much only for the stronger, more aggressive player with a very late release. most of those player types tend to want to play steel, not graphite.

      Sorry about that,

  4. I have your S2S Red regular in my driver at 43 3/4″. Love it. Going to put S2S Red regulars in my 3 and 5 wood, tipped 0.5″ and 1″ respectively. I have been demoing the S2s Red iron shaft in my 7 iron in both regular and stiff. Love the feel with both but leaning towards stiff for what feels like a little more control – the regular gets up a bit – both flexes would work and the stiff still feels smoooooth. Likely to get your 590 DIH in 3/4/5 with S2S Red hybrid in stiff too. Bottom line is the S2S Red is a great shaft for me and I think I am going to have bag full of them come the spring season. Thanks, Tom

    • Scott

      That’s great to hear and thanks for sharing your experience with the RED shafts with everyone. That’s an unusual shaft in terms of the profile, and I knew from the get go when I did it that it was not going to be a large segment of players who could be fit into the shaft. But I have been very pleased to hear from a few like yourself who found the shaft, tried it and for their swing found it to be just like I thought it could be – plays very stiff but does not feel super stiff at the same time.

      Thanks much !!

  5. Intrigued with the S2S Red shaft design – both woods and irons.

    I have a circa 100-105 mph (driver) swing. I moderate in tempo and release. I can use stiff or x-stiff in woods but tend towards stiff for a little extra loft. I use PX 5.5 in my irons right now and flex-wise they are about right.

    Where would that put me in your S2S Red? I am thinking stiff, but, would definitely be grateful to your input.

    • Scott
      Thanks very much for your message and your interest. It can be very tough to fit a golfer from afar by typed words because so much of better player shaft fitting has to do with whether the shaft achieves the feel preferences he has acquired over the years of playing with different clubs and shafts. Given what you have said about shafts you have and do use, since you are moderate in tempo and release and thus you are not on the more aggressive HITTER side of tempo, I would tend to say the Red R in the driver. Now if your driver length is OVER 44″, then maybe the S. But if you are 44″ or shorter and with what you said, I would lean to the R to start with. And definitely R in he irons if you try that.


  6. What swing speed(s) work best with the S2S stiff and the newer 919THI driver?

    • KEN

      The S2S Red is a shaft designed for players with a more aggressive move at the ball who also have a very late release. The Red R for drivers/woods is best used by someone with a 90mph to 100 mph clubhead speed on average who also has a definite aggressive move at the ball with a very late release. The Red S then is better used by someone with a 100-110 mph speed who also has this very aggressive downswing tempo with late release. Players with a smooth downswing tempo could use the Red shaft only if their clubhead speed were higher than the average swing speed range for the shaft – meaning if the player had a smooth tempo but a 100-110mph speed, he probably would be better off with the R in the Red design. But the REd shafts do definitely require a late release because of the very stiff tip section design. As with ANY shaft that a golfer is thinking about trying, it is best to shaft up ONE test club only and play with that for some weeks before making the decision to convert fully to it in all the clubs in the set.


    • Love these Stiff-flex S2S Red shafts in my Driver at 44″ length. My SS ranges between 97 and 105, depending on how hard I attack the ball. Yes, these are the first wood shafts I have played that let me put my heel down and take a real crack at the ball from the inside. I’ve always had a late release and finally I have shafts that don’t penalize me for going after it! Years ago I read Jack Nicklaus’s book (Golf My Way perhaps it was?) and followed his advice as I learned the game. He said that kids need to learn to swing hard at the ball and then they can learn control, tempo, etc. These shafts let me do just that. Now I plan to build up one driver in a 45″ length (I may swing hard, but as I got older I flattened my swing a bit to avoid back pain) and try the S2S Black in Extra Stiff to see if I can have more of the same but longer with similar control. Either that or I can tip one of the Red Stiffs a bit. Good thing there is if a tipped Red Stiff is not a good fit, I can pull that shaft and have a fairway wood shaft – it’s already tipped at least an inch by this experiment.

    • DAVID

      It’s really nice to hear that you found a good friend in the S2S Red shaft ! What you describe is the ideal swing move for it – to be able to jump on the shot when you want and not lose the shaft in the process. Great to hear and the very best to you in this great game !!


  7. I gotta tell you, I put the S flex wood in the 929HS and this thing is a monster now! I use the S flex for me because I have a very forceful transition, even though my swing speed is NOT high; and every other shaft faded to the right; this is the FIRST shaft that gets the face closed in time and EVERY hit has been perfectly straight! Great Shaft! SOLID, SOLID, SOLID!

  8. tom, I have a question. What would the new 560mc irons approximate at with the new s2s shafts? I also would like to know if you recommend a good iron shaft instead..ie: KBS
    Last…where is a good clubfitter close to me…Hermosa Beach.
    I am a 4 index and currently play the AP 2.
    thanks fred

    • FRED:

      Thanks for your interest for sure. I’m sorry but I am not clear on exactly what you are asking when you ask “what would the 560MC irons approximate with the new S2S shafts.” Approximate in terms of distance, performance, appearance? At any rate, the questions you ask can ONLY be answered by going through a proper fitting analysis with a very experienced custom clubfitter – proper fitting will ALWAYS be a process of needing to SEE the golfer’s swing characteristics, his ball flight tendencies, and getting to assess his personal preferences for everything from the looks of the head design to the feel of the clubs.

      At least reasonably close to you (25 miles) in Pasadena is Bob Williams. Bob is a VERY experienced clubfitter who I have personally known in the business for a very long time. Bob is very good, has had tons of fitting successes with all levels of golfers, and would do a very good job helping you find the best fitting specs and performance for your sticks. I would suggest you call him and talk to him about his fitting processes and then book a day and time you can meet with him. it would be worth your time to do so. His contact info is as follows:

      Bob Williams
      The Pasadena Clubfitter

      Thanks very much!

  9. Sounds like a great shaft. Can I just buy one or do I need to be fitted? How much is that s2s red shaft?
    I’ve been reading your books and am thankful for all the information you have to offer. I like to tinker with my clubs and try new combinations. Now I know why I do that so much. Because I never know what kind of shaft is actually being sent to me.

    • NICK

      If you are a clubmaker or have the experience to build clubs correctly, contact us and we will be glad to help and offer you the S2S Red shaft for your shafting work. If you are not a clubmaker, please contact a clubmaker in your area for assistance with this. Thanks much,

  10. In your tab for RAW/CUT WEIGHT, are you basing the cut weight at a certain playing length? What is the cut wt and how did you calculate. 2″?

    • RAY

      For our shafts for woods, we base the approximate cut shaft weight on what the cut shaft length would be for the shaft when installed in a driver to 44″ playing length. With our driver models, for a 44″ playing length, the cut shaft weight would be in the area of 41 1/2″ so depending on whether the raw shaft length is 45″ or 46″ that means cutting 2 1/2″ to 3 1/2″ off the raw length shaft. Of course it would drop a little bit lower for fairway woods, progressively.

      With irons, we base that on a 6 iron of 37 1/2″ playing length. So if you started out with a 41″ raw length for the iron shaft, in a typical 6-iron that would equate to a cut shaft length of 36 1/2″ length.

      These cut weights are of course approximations that can be affected by each head model’s bottom of bore to ground dimension as well as the player’s final playing length, and also the weight distribution of each shaft (butt heavy vs tip heavy type shaft designs).

      Roughly you can calculate the net loss in shaft weight by finding out the rough weight per inch of a shaft. While there are little variations in this from shaft design to shaft design due to the weight distribution of the raw shaft, you can figure out the rough weight per inch by dividing the raw weight by the raw length. So a 65g raw weight shaft that is 45″ in raw length would weigh about 1.45g per inch. A 115g raw weight shaft that is 41″ in raw length would then weigh around 2.8g per inch.

      Hope this helps,

  11. Tom,

    That’s what I figured. The infographic on this page states a recommended 5i swing speed of 100-115 mph. Guessing it’s supposed to be driver swing speed. No worries.

  12. Do you really recommend a 5i swingspeed of 100-115 to fit into the S flex?

    What kind of man-child swings a 5i at 115mph?

    • Brent
      No, I do not believe I have ever advocated an S flex iron shaft for a golfer with a 100+ mph swing speed unless it is tipped additionally by a good bit over its normal tip trim per iron. Interestingly, about half of the men I have seen personally with a true 5 iron clubhead speed of 100mph or higher were all serious long time hockey players who also were large athletic men as well. But the quick acceleration they learn to hit shots in hockey is where they get this high of a speed.


  13. Tom,

    Do you fit these shafts with adapters for the clubs with adjustable features, ie. Callaway?

    And, does it come in an X flex.

    Thank you,

    Bill Dutkowski

    • Bill:

      I assume from your message that you are asking if we can perform a reshaft on driver heads that are made with anadjustable hosel device. I am sorry but we do not perform repair jobs on other companies’ heads. The reason is because this is way more along the lines of what the custom clubmakers all around the country do in their work along with fitting and building new custom built clubs for golfers. So we do not want to take business away from the clubmakers. I recommend you go to our FIND A CLUBFITTER locator that is found in the middle of our home page on our website and check to see if there is a clubmaker in reasonable proximity to where you are located. If you find one, call him and ask him if he can do re shafts on the adjustable hosel device drivers.

      If this is not what you were asking, I am sorry but if you could please re state what you want, we would be happy to respond.


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