Cobra KING F9 SPEEDBACK Irons Review

50 Words or Less

Cobra KING F9 SPEEDBACK irons have a distinctive look shaped by performance features.  Long and towering ball flight plus plenty of forgiveness.


Beyond having superstars Rickie, Bryson and Lexi on staff, there’s good reason Cobra Golf is excited about 2019 – their equipment lineup is rock solid.  Matt S. declared “the Cobra KING Forged MB CB irons are a dream set” for better players, and in this review I’ll take a detailed look at the new KING F9 SPEEDBACK irons that pack in a lot of technology aimed at helping the average golfer enjoy the game.


Cobra designers weren’t bashful about the changes they made to the predecessor KING F8 irons.  Most noticeable is the namesake SPEEDBACK – a belt of steel around the sole that adds mass low and wide. Looking at the sole, the chrome strip represents the width of a conventional iron, while the matte finished area depicts the wide-body aspect.  By embracing the added width, Cobra made it intriguing.

The revamped cavity of the KING F9 SPEEDBACK has a leaner look with a lot of eye appeal in the bag.  The topline is modest as is the offset.  On the face, the fine mill marks create an inviting hitting area, but the shine of the chrome on the toe was distracting at times in bright sun.

Sound & Feel

My club pro Nat, who recently switched to Cobra KING Forged CB irons, set up next to me for some practice on the range.  Listening intently, I couldn’t distinguish differences in impact sounds between the two of us.  I asked him to hit my F9s and not only did he agree about the sound, to his amazement the feel was remarkably similar to his CBs.

On well struck balls, the KING F9 SPEEDBACK irons delivered a crisp sound and a responsive feel that borders on soft.  Off-center strikes felt sturdy without being harsh on the hands thanks to the 3-piece cavity medallion.


How did Cobra produce their longest iron ever without strengthening lofts?  Technology.  SPEEDBACK shaping lowered the CG for launching the ball, while the forged PWRSHELL face returns more energy for increased ball speed.  That adds up to high and long ball flights – 5 to 10 yards longer than my gamers.

Distance is every golfer’s desire, but forgiveness is their true best friend.  1.8 mm thick in its thinnest spot, the variable thickness of the PWRSHELL face expands the SWEET ZONE for more distance on off-center strikes.  Cobra also recognized that most players need more forgiveness in the distance irons and placed 33 grams of tungsten in the toe and hosel of the 4 thru 7 irons to maximize MOI.  Shots towards the toe on the longer irons flew straight with only about 20 yard distance penalty – very reasonable outcomes for poor contact.

Cobra incorporates other interesting design features to optimize performance, such as progressive hosel lengths for CG positioning – shorter on the 4-6 for lower CG and higher on the wedges for raised CG.  On the milled face, groove shapes are varied to control spin.  V shaped grooves are on the 4-7 irons are designed to reduce spin, while U shaped grooves on the 8-PW are intended to increased control and accuracy.  Groove spacing is tightened on the GW and SW for more spin.

The Cobra KING F9 SPEEDBACK irons come stock with Lamkin Crossline grips with COBRA CONNECT sensors built in.  The sensors work in conjunction with the Arccos mobile app for shot tracking and analytics.  If you aren’t familiar with Arccos, check out what Matt S. has to say HERE.


The tagline I saw on the Cobra website really summed up my thoughts on the KING F9 SPEEDBACK irons:  “Powerful, Stable and Accurate.”  With technology enhancing nearly every aspect of the club from grip to toe, the irons have appeal for mid and high handicappers looking to enjoy the game more.  I won’t be surprised to find a KING F9 SPEEDBACK 4 iron in Nat’s bag soon – he marveled at the extra yards and fairway finding consistency.

Cobra KING F9 SPEEDBACK Irons Price & Specs

Matt Meeker
Latest posts by Matt Meeker (see all)


  1. Sooner or later everyone will catch on to the fact that Mizuno made the best looking GI iron ever in the 919HM by ditching all the plastic badging and just making it look like a players CB as much as possible.

    • Thanks to a previous golf coach, I tend to avoid Mizuno like the plague. JPX would be tyythrte exception.

  2. I have just purchased the Cobra King Speedback Irons and I am really liking them. The pitch, gap and sand wedges have a good feel when striking the ball and as a result my confidence is increasing when approaching and around the greens. The longer irons, which I am still mastering, can be very forgiving! I am very happy with my purchase! Thank you Cobra!

  3. My wife bought we the F9 irons for my birthday about 3 weeks ago. I work full time, it was hard for me to really dial in the irons. I was able to play 3 rounds and every day I was hitting them into my net in my backyard. I took them with me to a tournament in Nevada and by the end of the trip, I was really hitting them well. My normal 7 iron is about 150 total and now it’s more like 160. They have a very nice feel and I’m looking forward to the next round.

  4. These irons are so underrated. Love them!

  5. I have had the F9 speedback irons for a year now. I was always a forged iron player but a back operation and getting up in years I need to get some length back in my irons. Just can’t say enough about these clubs. I can still work the ball and an off center hit still gets me on the green.

  6. I have played these for about a year, and they are just great irons! Accuracy is tops, and length is no problem. My Best Buy ever!!

  7. Jimmy Steeves

    These clubs sound like the real McCoy I am looking for a new set of iron looks like I am going to roll the five on these bad boys thanks for the reviews

  8. IM searching everywhere for a topline view of these clubs. I know the soles are a bit wider but are they Nike Slingshot wide? How much of the sole of the long irons (4,5) can you see at address?

    • I included a topline view in the review Max. Plus a few photos in profile. I never held a Nike, so I can’t offer any comparison. From what I recall, the sole starts becoming slightly noticeable in the 5 irons and a bit more in the 4. Sorry, can’t really offer anything definitive there.

      – Meeks

  9. I have an aggressive transition and don’t think the kbs 90’s are for me. Why don’t they offer other shafts?

    • OEM’s offer shafts appropriate for the majority of golfers for the intended market. Cobra chose to offer just the KBS 90s – not much more I can add – you know the aftermarket options.

      – Meeks

  10. Gerry Teigrob

    I just bought a set of F9 5h, 6-GW and I am pumped for 2021! I wish I could find a 4 iron in these irons! I’m not big on the OL irons anytime soon…but that’s an option once I lose distance on my long irons!

    • Gerry Teigrob

      Update…I just got the Cobra F9S 5-GW from Golf Town and I’ll be adding an F9 4 iron and driver shortly.

  11. Jimmy Steeves

    Bought them f9s ,played them, love them. Thank you cobra.

  12. Hi Matt,
    How significant is the offset in the 4 iron? Is it at all distracting or displeasing at address?

    • Matt Meeker

      My memory is a bit foggy after three years Nick, but I did not find the offset distracting or displeasing.

      – Meeks

    • I have the F9 4 iron…I would recommend it to anyone. Looking forward to it being my driving iron or playing it more on the fairway.

  13. Hi Matt
    You guys do great reviews! I’m trying to decide between F9’s and pxg 0211 irons. I’m a 16-18 cap and hit my 7 about 160 on a good strike with the F9. Hitting the 0211’s tomorrow. Wondering your thoughts? Thanks

    • Matt Meeker

      Hopefully by the time you read this Don, you will have tested the PXG’s – so let us know how they compare.

      – Meeks

    • Don, I’m not sold on the PXG brand but you might be. I would much rather go with the F9s. They have more to offer me than my Speedzone irons ATM.

  14. I’m looking to purchase a new set of clubs what clubs do you think are better out of the Cobra F9 Speedback and Cobra forged tec black?

  15. Yes Or No Spinner

    I’m glad I found this review of the Cobra KING F9 Speedback irons. I’m looking for a new set of irons and this seems like a great option.

  16. I’ve owned the Cobra F9 irons for around 2.5 years, and I still love them. Forgiving, great distance and still look great in the bag.

    I try to play once a week and play off a 15 handicap (24 before I made the switch) I’m not saying they’ll shave 10 shots overnight but they’ve improved my game no doubt.

    Would highly recommend them if you’re in the market for some game improvement irons.


Leave a Comment

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