555M Forged

555M Forged Carbon Steel Irons

Discontinued Model

Traditional muscleback forged carbon steel design with TWGT custom grind sole


  • A traditional forged muscleback design with a true tour grind sole design similar to how Tom Wishon designed Payne Stewart’s forged irons in 1999.
  • Full face to back sole radius with heavily rounded leading edge to deliver more shotmaking consistency from lies in the fairway and rough.
  • Thin topline, low offset and classic players’ shape make the 555M a design admired by all discerning golfers.
  • True forged from 1035 soft carbon steel through a 5-step forging process which affords greater production shape/grind consistency.
  • 555C and 555M are designed to match perfectly with each other for true custom mix and match set makeup between cavity back and muscleback.
  • Bright satin nickel chrome plating finish with glass bead blast highlights.
  • Available in RH in #3-9, PW, AW, SW.
  • Produced with post-2010 new USGA scorelines.

A 360º view of the 555M Iron Clubhead.

Tom Wishon talks about the 555C and 555M Forged Irons.

Ratings and Reviews

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Rating: 4.6/5 (20 votes cast)


555M Forged, 4.6 out of 5 based on 20 ratings


  1. What kind of grooves do these irons have?

    • Tannen
      The 555C and 555M irons were originally introduced before the 2010 scoreline rule change of the USGA. so all of these irons bought before Jan 1, 2010 did have the old grooves and are conforming under the grandfathering clause of the 2010 rule change until 2024. But then in 2009 with the new rule coming, we did change the grooves on the 555C and 555M to be conforming under the new 2010 rule so that all of these iron heads sold after Jan 1, 2010 were conforming to the new groove rule. Difference in the models can be seen because all of the post 2010 555’s with the new conforming grooves were made with the letters NS engraved on the hosel – for ‘new scoreline’ . As such if you look at the USGA’s on line list of conforming irons, you will see the 555C and 555M listed.

      In terms of actual groove shape, both the pre 2010 and post 2010 grooves are U shaped grooves and as I said, conforming. There was a lot of confusion when the 2010 groove rule came out with a lot of people mistakenly thinking that the new rule dictating that the grooves have to be V shaped. That was not true. The grooves could be V or U shaped as you wish as long as they conformed to the two edicts in the 2010 rule – the top edge radius had to be more rounded and the area of the groove had to be a little smaller.


  2. Anyone know of a Wishon clubfitter in the NE Ohio (Akron) area? Thanks.

    • DON

      In NE Ohio, the closest clubmaker with good experience we can recommend would be Ray Tomaszewski in Lorain. That’a about 43 miles from Akron so that’s not too far. Ray’s contact information is as follows:

      Ray Tomaszewski
      1731 West 22nd St
      Lorain, OH 44052
      440-246-6006 or 440-396-5375

      Thanks much for your interest and the very best wishes to you in this great game.

  3. Tom – I am looking for a heavy-ish set of classical MB design like these. My question is what does a standard 3 iron, built with x100 DG shaft, weigh in ounces? Thx

    • Also, can you recommend matching Driver/FW woods that would meet my heavy weight requirement? Thx

    • For drivers and fwy woods, if you are searching for a much heavier weight FEEL you can do that in a couple of different ways. for one of course you can put a steel wood shaft in the area of 120g into the driver and woods and get the total weight well up there higher. Only problem with that is that based on modern driver and fwy wood headweights, you would not be able to get the length of the driver much longer than 43.5″ without the swingweight being very high to go with that. but if a shorter length is also something that would help you in your fitting, then that’s not that much of a problem.

      The other option is of course to build the driver and woods to have a high swingweight, but with a graphite shaft of say 85 to 95 grams in the woods. When it comes to a club feeling more heavy to help control a faster more forceful tempo, a heavy weight feel can also be achieved by using a much higher swingweight with a not too heavy shaft. If in fact trying to go heavier in feel to help slow down a too quick tempo is the goal, this definitely is possible to do by using a much higher swingweight too.


    • A typical 3 iron build with a DG X100 with a normal size rubber grip to a normal swingweight would weigh in the area of 14 to 14.1 oz usually.


  4. play the 4,5,6i 555c 7-PW 555m. Custom fit they are awesome. Ball pops off the face. very consistant feel. 9-11 hdcp usually….1st round with these shot 74. 235 4iron at 6000ft elevation. putter next.

    • GARY

      Great to hear that your mixed 555 set is behaving itself in your bag!!! 235 #4 irons? We’re at 6500 elevation here in Durango, CO and so we know very well the effect of that type of altitude such that we can say WOW to a 235 yd #4 iron!!!! For some of us, a 4 iron here is “only” 200-205 !!!

      TOM ;>)

  5. I recently had a set of these irons built by my friend, Tom Miller, at AA Golf Clubs in Raleigh, NC. Mr. Miller was meticulous when he put these clubs together and I am incredibly impressed with his precision and with how quickly he had them constructed and in my bag. Many thanks to Mr. Miller for his work.

    These irons are gorgeous and play even better than they look. I really appreciate the classic look with minimal stampings and the “brushed” finish. The ball feels great coming off the face of these clubs and I like the way they interact with the turf. I would highly recommend these irons for the single-digit handicap players out there.

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