Cobra King Speedzone Iron

Our verdict on Cobra's new game-improvement iron for 2020

Cobra King Speedzone Iron Review
Golf Monthly Verdict

The King SZ represents a shift further towards the super game improvement category, with the Forged Tec sweeping up golfers looking for a compact distance iron. If you’re all about distance and forgiveness with your iron shots, the King Speedzone is certainly one of the models to try in 2020.

Reasons to buy
  • +

    Offers increased distance over the King F9 on a stronger flight thanks to lower spin. Direction seemed just as easy to control despite stronger lofts.

Reasons to avoid
  • -

    Much of the distance gains will come from severe strengthening of the lofts. Not everyone will enjoy how the carbon fibre topline looks.

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Cobra King Speedzone Iron Review - Joel Tadman has his say on the unorthadox Cobra King Speedzone iron after testing it on the Foresight GCQuad launch monitor

Cobra King Speedzone Iron Review

Not many irons demonstrate out-of-the-box thinking as well as the Cobra Speedzone iron. It comes in One Length, the unorthodox, boxy Speedback shaping continues from the previous King F9 model and it’s the first iron to feature a carbon fibre topline (you can read more about the tech here). Good things really do come in threes.


The latter is unquestionably eye-catching given it's a first in golf, but not to the point that it creates an unwanted distraction. In fact, after a few shots you’ve all but forgotten it’s there and switch to focusing on the performance, of which there is much to enjoy.


This is a solid, powerful iron that doesn’t leave anything behind, such is the stability of the head on off-centre hits. Interestingly, Cobra has strengthened the 7-iron loft significantly by two degrees down to 27.5°. This change is somewhat justified, given the King SZ achieved a peak height of 33 yards, only one yard lower than the King F9.


The initial launch angle was over one degree lower and the ball speed, on average, was 1mph quicker. Factor in the 200rpm lower spin and the King Speedzone carried a whopping 189 yards, three yards longer than the King F9. Generation to generation, this would seem to be a significant jump, but the severe strengthening of the lofts makes it a little less exciting.

We like how the effective sole width has been reduced while maintaining the bounce, making it feel a little quicker through the turf, as well as the various extras like the One Length option and Cobra Connect shot tracking add genuine value for money.

To take a look at the full Cobra iron range and work out which one is best for you, check out our Cobra iron range post.

Also do not forget to go on the Golf Monthly website for more reviews.

Joel Tadman
Technical Editor

Joel has worked in the golf industry for over 12 years covering both instruction and more recently equipment. He now oversees all product content here at Golf Monthly, managing a team of talented and passionate writers and presenters in delivering the most thorough and accurate reviews, buying advice, comparisons and deals to help the reader find exactly what they are looking for. So whether it's the latest driver, irons, putter or laser rangefinder, Joel has his finger on the pulse keeping up to date with the latest releases in golf. He is also responsible for all content on irons and golf tech, including distance measuring devices and launch monitors.

One of his career highlights came when covering the 2012 Masters he got to play the sacred Augusta National course on the Monday after the tournament concluded, shooting a respectable 86 with just one par and four birdies. To date, his best ever round of golf is a 5-under 67 back in 2011. He currently plays his golf at Burghley Park Golf Club in Stamford, Lincs, with a handicap index of 3.2.

Joel's current What's In The Bag? 

Driver: Titleist TSR3, 9° 

Fairway wood: Titleist TSR3, 15° 

Hybrid: Titleist TSi2, 18° 

Irons: Ping i230 4-UW

Wedges: Titleist Vokey SM8, 54°. Titleist Vokey SM9 60° lob wedge, K Grind

Putter: Evnroll ER2V 

Ball: 2023 Titleist Pro V1x