771 CSI


771CSI  Carbon Steel Irons

Thin Face, High COR, Variable Thickness Face in a Carbon Steel Body to Offer a HotList-Icon2014Wide Range in Lie and Loft Bending for Custom Fitting



  • High 0.830 COR face design offers the most distance for all golfers
  • CNC Machined Variable Thickness Face delivers superb off-center hit forgiveness
  • Head body material is 1020C carbon steel to allow clubmakers to perform a wide range in loft and lie bending – previously all high COR thin face designs had to be mounted in a 17-4 stainless body, which limited loft and lie fitting options
  • Conventional Head Size and Shape means a wider range of golfers will like the 771CSI design
  • Fully Radiused Sole Design with Rounded Leading Edge offers golfers the best playability from all types of grass as well as from the rough
  • Available in RH & LH in  #4, 5, 6, 7, 8, 9, PW, (AW RH only) in bright satin NiCr electroplated finish


A 360º view of the 771CSI Iron Clubhead.

Ratings and Reviews

VN:F [1.9.22_1171]
Rating: 3.9/5 (342 votes cast)


771 CSI, 3.9 out of 5 based on 342 ratings


  1. Tom would you ever consider/ would it be practical/ to make a sw-lw with a high COR variable thickness face? I know a lot of shorter wedge shots and shots from the rough tend to be missed high on the face with a wedge. Would it be beneficial to have that extra off center hit performance with wedges? I know the Ben hogan company came out with wedges that had more weight up higher on the back of the club head claiming it helped offer better distance on those higher face strikes. I always thought less weight or a thinner face would be better. What are your thoughts?

    • KOURT

      It would basically be a waste of time and a waste of money to make a high COR SW and LW. One could argue that if all of the other irons through the PW and GW were a high COR design, then the SW and LW should be as well to keep the distance gaps consistent. But really, help for off center hit performance gets less necessary as loft increases. This is because as loft increases the ball does not compress into the face as much. And the penalty for loss of distance from an off center hit is always more when the ball compresses more into the face and less when the ball does not compress much into the face. Of course if you do tight enough testing, you can probably find that a thin/variable thickness face on a SW might help reduce off center hit distance loss by 1-2 yards. In most cases that is not very much, but on some holes, maybe that 1-2 yards is the difference between the ball dropping short in the hazard vs just making the fringe of the green. Not often that would happen though.

  2. Tom,

    Are there any fitters that you recommend in the Mobile, AL area?

    • JOSH
      Absolutely. Ronnie Barnett at RJ the Clubmaker right in Mobile is very good. I’ve known him for a very long time in this side of the golf equipment industty, have corresponded with him regularly on technical topics, so I can tell you he knows what he is doing in the field.

      RJ the CLubmaker
      1216 Edinburgh court
      Mobile, AL 36609

      Hope this helps and thanks very much for your interest,

  3. If you had a 7 iron from the 771 csi set and a 7 iron from the sterling Single Length set built to identical length and loft. Would there be any performance difference?
    I’m considering building a hybrid set with the 4-7 irons at 7 iron length from the sterling single length set. Then 8-aw in the 771 csi irons at progressively shorter lengths.
    I realize this negates one of the benefit of having all clubs the same length but to me the main benefit of the single length set is the shorter and easier to hit long irons.
    But having the extra off center hit forgiveness from the high cor variable face in the 8-aw from the 771s at conventional length to me outweighs the con of adjusting to hit a shorter length club because in my opinion hitting those shorter length clubs isn’t an issue with most people I fit.
    Do u think a combo set like that would be a viable option?
    I know with my Single Length set I had issues with keeping my flight down with the longer length pw-sw because I am a higher swing speed player.

    • KOURT

      While both the 771-7 and Sterling-7 are the same type of high COR face design in the same type of carbon steel body, the 771-7 has a loft of 34* and the Sterling 7 is 31*. That right there makes a big difference that can’t be equalized unless you do some serious bending. There are a gazillion different set options one could pursue for length relationships between irons. It is possible they can all work fine for a golfer as long as the shaft, total weight, swingweight, lie and grips are correct for the golfer at the same time. Single length is the only way to establish a PERFECT match of every single possible element of swing feel in golf clubs, but for some, there can be issues with the wedges or with the lowest loft irons. I personally think that those who say they do not like the wedges have not given them enough time. I mean there is no way a more accomplished player could possibly jump from conventional length/loft wedges into single length wedges and have it be seamless from day one or day ten. But then too, there is nothing wrong with going single length from 4 to PW and then using the other wedges you are more used to. That way you still have seven irons all with the same identical swing feel, all with the same identical set up, posture, swing plane.


  4. Tom I read somewhere that you said any club above 40 degrees in loft imparts such a glancing blow that the forgiveness factors from perimeter weighting don’t have much of an effect.
    I was wondering why you would design the 8-gw in this set with a variable thickness face if that technology doesn’t affect the shot as much in those higher lofted clubs. Maybe I mis interpreted what you were saying but if you could explain the benefits of the variable thickness face in the higher lofted clubs that would be great.

    • KOURT

      At higher lofts such as over 40*, it is not a case of the perimeter weighting or the thin face not working at all. It is a progressive drop in the amount of off center hit forgiveness or in the ball speed increase as the loft increases. So you would not do away with these things totally just because of the higher loft reducing the impact force into the face and head because it is just reduced, not eliminated.


  5. Mr. Wishon,

    After reading a couple of your books, and learning all I could about club custom fitting, I decided to visit Mr. Rick Grinstead, in Saddelbrook, Arizona.

    I was fortunate to meet him and have a very professional session at his place. I have to add that I live in Mexico City and making this trip was one thing that I really wanted to do, because unfortunatelly, currently there is nobody who can provide this service in my country. I have to say that there is a person in San Luis Potosi, Mexico, who used to provide professional club fitting, but unfortunately he is retired.

    After a couple of sessions, Rick was able to give me a complete assesment on my swing speed, tempo, angle of attack, etc., and finally recommended your 771 CSI irons and the Micro groove wedges for me. After a month, I was able to travel again to Arizona, and just picked them up yesterday.

    We went to the driving range to try them out, and I have to say that I could not be happier. The time and money spent on this clubs was worth every penny.

    The clubs just felt great. All my shots were straight and were at least 10 yards longer than my previous Ping i15 clubs. I am at the airport, and just cannot wait to go back home and play my first round with them.

    I am currently an 18 handycap golfer, but I am sure I will be able to reduce at least 8 strokes in the next 12 months with these clubs. They are amazing. Keep the good work.

    Federico Chavez
    Mexico City

    • Thank you very much Sr Chavez for sharing your fitting experience with Rick. I am very pleased to hear that you found Rick and were able to work with him for your fitting needs. Rick is a long time friend of mine in this business so I know how good he is, and I know what a good job he does for the golfers who find him and choose to work with him. That’s really great to hear and I thank you so much for your interest and your support !!

      Best wishes to you in this great game,

Leave a Reply

Your email address will not be published. Required fields are marked *