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Sub 70 639 CB Forged Black Irons

Please allow 2-4 days for assembly before your clubs ship. Each set is custom built when ordered.

If you do not see the shaft, grip or other option that you are looking for in the drop down menus please contact us at 877-267-7093 or

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The Sub 70 639-CB Black Forged Iron is a workhorse for the player who seeks distance and control while retaining feel. It is precision forged and milled from a solid billet of DT-4 soft stainless steel for unparalleled feel and responsiveness off the face. The club is designed with a rounded leading edge and sole design to provide better turf interaction for the player who needs forgiveness, and the player’s style cavity back provides additional margin for error while not eliminating workability.

The 639-CB Black provides the best of both worlds, allowing for creativity and shaping of shots while providing the necessary forgiveness to the player in need.

Head Number 3 4 5 6 7 8 9 PW
Loft 20 22 25 28 32 36 40 44
Lie 59.5 60 60.5 61 61.5 62 62.5 63
Offset(mm) 3.5 3 2.75 2.5 2.25 2.25 2 1.75
Bounce 1 1 2 3 3.5 4 4.5 5
Head Weight 242 249 256 263 270 277 284 292
Standard Length Steel 39 38.5 38 37.5 37 36.5 36 35.75
Standard Length Graphite 39.5 39 38.5 38 37.5 37 36.5 36.25
Material DT-4 Steel
Finish Tour Black PVD
Sub 70 Iron Models
Model Category Characteristics Suggested Handicap
739Game Improvement Higher Launch, More Distance, Most Forgiving15+
699Players DistanceModern Head Shape, TPE Injected Face, Max Ball Speed/Distance and Launch5-15
639 CBPlayers Cavity BackCavity Back Head Shape, Forged Soft Feel, Workable, Great Feedback0-8
639 MB PlusPlayers Muscle Back/Blade Blade Style Head, Forged Soft Feel, Longer Heel to Toe (compared to MB)0-8
639 MBPlayers Muscle Back/Blade Compact Blade Style Head, Forged Soft Feel, Ultimate Players Iron, Very Workable0-5
Customer Reviews (3)
I was looking to replace my Wilson FG Tour V4 irons when a friend recommended that I look into the Sub 70 639 CB forged irons. After reading all the reviews on MGS and other boards, I contacted the company and spoke directly to Jason the CEO of sub 70. I asked if they could build me a set of clubs to the exact specs as my Wilsons Staffs, D5 swing weight +2 lie +1 length and boy they did not disappoint. These clubs are the real deal and at a quarter of the price of OEMs. I have played 15 rounds with my 639s and I have all the confidence in the world with these clubs.Thank you for building me a great club.
Review by Hector R (Posted on 2/3/2020)
Extremely solid sticks
I caught a quick video online and am so happy I did. I absolutely love the look and feel of these clubs. I am a scratch golfer and have played everything out there. These can compete with any cb’s on the market. With any clubs for that matter. Clubs look amazing. Built perfectly to my specs. Feel is very solid. A great forged club. Very accurate as you would expect from a forged iron. I highly recommend. Review by BKL (Posted on 12/26/2019)
Extremely impressed!
I’ve played about 7-8 rounds now and I can’t find anything negative about these irons. I was gaming ping g30’s and was debating between the 699’s and these but felt I was ready to advance into a little more of a players iron. So I went with the 639 CB and I couldn’t be happier.. and I’d be lying if I said the black didn’t have an impact lol. I really thought it would take me some time to adjust to a smaller head but I was wrong. You can definitely feel the misses but they’re a lot more forgiving than I would have imagined. Crisp shots feel like butter. I’m very impressed! Review by JDC (Posted on 8/26/2019)
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