Cobra KING F9 SPEEDBACK Irons Review

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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

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Matt Meeker

Matt lives in sunny Orlando with his wife who allows his golf obsession to stretch the limits of normalcy. He's also a proud coach with The First Tee of Central Florida who loves teaching kids about golf and life skills.

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  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.

  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.

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