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Cobra King F9 SpeedBack One Length Combo Iron Set


King F9 SpeedBack One Length Combo
Player Type
Clubs Type
5H,6-PW,GW Iron Set
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The King F9 SpeedBack One Length irons are a combination of tungsten weighting and innovative shaping to deliver the most powerful and stable COBRA iron. Also features The One Length ™ Configuration that’s engineered with a matching 7-iron length, lie and swing weight specifications. This configuration simplifies your game by reducing the variability in your swing for increased confidence and consistency. These irons are forged E9 Pwrshell™ Face Technology that offers a thicker face design that’ll expand the sweet zone for a higher launch and faster ball speeds across a larger area on the face.


  • One Length ™ Configuration
  • Progressive Shaft Weighting
  • 3 different KBS shaft weights (KBS Tour 80, 90 and Wedge)
  • Wider soles in the 4-6 irons lower the club’s center of gravity and add bounce
  • Cobra Connect that features electronically enabled grips that work in conjunction with the Arccos Caddie app, allowing users to track their stats and improve their game


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Technology / Specs

Cobra’s KING F9 Speedback™ One Length irons share all the same features of their variable length counterpart, the KING F9 Speedback™ irons. As the model name suggests, the difference is in the length. Read on to find out about these irons.

Speedback™ Technology

Cobra uses its new Speedback™ technology in the KING F9 Speedback™ One Length irons. This technology adds mass to the sole of the club, pushing the CG low for easy launch and added forgiveness. The mass doesn’t give the irons a bulky look and actually helps with turf interaction.

One Length Configuration

Each iron in KING F9 Speedback One Length iron set is built to 7-iron length, lie angle, and swing weight. Building the clubs like this promotes a single setup and swing and is designed to produce more overall consistency to help lower scores.

Co-Molded Medallion

On the 4-7 irons, Cobra uses a Co-molded medallion to dampen vibrations and give the clubs a soft feel. The 3-piece medallion is made with aluminum, TPU and acrylic foam.

Forged E9 PWRSHELL™ Face Technology

The face of the KING F9 Speedback One Length irons has forged E9™ technology, which varies the thickness across the face, increasing ball speed on off-center hits and expanding the sweet spot.

The face also utilizes the company’s PWRSHELL™ tehcnology, where the face wraps around to the sole of the club, creating a channel that flexes in and out at impact. This reaction creates higher ball speed and launch angles.

Progressive Shaft Weighting

Cobra uses 3 different KBS shafts with different weights in the KING F9 Speedback One Length irons. The progress from a KBS Tour 80, to KBS Tour 90, to KBS Wedge shafts. Using this shaft setup creates the perfect launch and feel in each club.

Cobra Connect

Each club in the Cobra KING F9 family has Cobra Connect powered by Arccos sensors in the grip. The sensor tracks distance, accuracy, and more automatically. The data collected gets sent to the Arccos Caddie app, showing you areas that you’re doing well and what you can work on to improve your game.

The following chart lists the stock specs for the Cobra F9 Speedback irons.

adidas Bridgestone Golf Callaway Cleveland Cobra FootJoy Mizuno Nike Ping Puma Srixon TaylorMade Titleist Wilson adidas Bridgestone Golf Callaway Cleveland Cobra FootJoy Mizuno Nike Ping Puma Srixon TaylorMade Titleist Wilson
+ + Clear All i What is this? About UTry®
These are your UTry® selections. Only UTry® eligible products appear here. 2 product limit.

Our UTry® program gives you the opportunity to try out brand new products from the game's top brands for 14 days for only $25, or $100 for an iron set. That's right—you get a brand new, still-in-the-plastic club to try for two weeks for just $25.

You get to try it when, where, and how you want for two weeks before deciding if you want to buy it or not.

Want to test out two different brands, or two different configurations? No problem. UTry® lets you try out up to 2 products for $25 per product or 1 iron set for $100.

This isn't 30 minutes on the range with range balls or looking out of the Pro-Shop window. You can try the product on your time, when & where you want.

UTry® gives you the freedom to take Golf Clubs, GPS or Rangefinders to your course and to use at your pace! Use it as much as you like so you can really know what the product will do for your game before you invest in it.

If you don't love it, simply put it back in the box it came in, use the included prepaid return shipping label, and send it back to us. That's it.

If you do love it, that's awesome! You keep the product, we'll subtract the $25 trial fee off the final cost of the product, and we'll charge you the difference.

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