Skip to main content Accessibility is an ongoing effort for the 3balls team. We are always searching for solutions that will improve the accessibility of our site. If, at any time, you have difficulty using or accessing any part of 3balls, please feel free to contact us. We will work with you to make all reasonable efforts to correct the issue and assist with immediate needs.
All  /  Men's Clubs  /  Right Hand  /  Iron Set  /  New  /  Cobra  /  King F9 SpeedBack One Length

Cobra King F9 SpeedBack One Length 5-PW, AW Iron Set in New ConditionCobra King F9 SpeedBack One Length Iron Set

5.0 ( 12 )

Configure Your King F9 SpeedBack One Length Iron Set

 - Undo All Selections
3Balls Rewards Logo You can earn 611 yards with this purchase!

Features & Specs

New Condition Men's Right-Hand Cobra King F9 SpeedBack One Length

5-PW, AW Type, Regular Flex, Standard Length, 2° Upright Lie Angle

Graphite Fujikura ATMOS 6 One Length Graphite Shaft


Headcover Included : Yes

Tool Included : No

Grip Included : Yes

SKU : 1046721-AES-2B7-ACL


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


Very long!!!

Review by Fraz Nino P., 2 years ago.

“Loved my F9 irons! I'm 11 handciap. Quick off the face. Very long compared to my Psi. Easier to hit too. I gained more or less 10 yards per club.It's easier to adjust on the one length than expected. Highly recommended for those who want to improve their iron shots and increase distance. ”

Did this help you? Yes ( 26 ) ··· No ( 1 ) ··· ( Report )

Email verification required to report.

Consistency Across the board

Review by Roland C., 2 years ago.

“Absolutely love these irons. So consistent and easy to hit. Love the one setup across every iron. Shots are a lot easier now and distances were not hurt at all by the one length concept. Tried this through the Global Golf U Try program and did not anticipate keeping them but fell in love so in my bag they stayed!”

Did this help you? Yes ( 21 ) ··· No ( 3 ) ··· ( Report )

Email verification required to report.

Great feel and long

Review by james s, 2 years ago.

“I just started playing again after about 12 years and was fascinated by the one length clubs. I purchased them 1* weak, 3/4 inch long, and 2* upright. They feel and sound great as well. All my clubs have great height to them when hit. One negative I’ve seen about the one length is height, but I do not have a problem with that what so ever. If you are fascinated by one lengths like I was, don’t hesitate and just buy them. You will not be disappointed!”

Did this help you? Yes ( 11 ) ··· No ( 2 ) ··· ( Report )

Email verification required to report.


Review by Saturn H, 1 year ago.

“This is the first set of one-length graphite Irons I have ever had. Great feeling when holding the grip. Definitely faster swing speed because of a lighter weight.”

Did this help you? Yes ( 7 ) ··· No ( 0 ) ··· ( Report )

Email verification required to report.

F9 One

Review by Giulio , 1 year ago.

“I started on the one length journey in 2019 and was one of the first to own a pair of F9 One Lengths in Alberta. This first 10-15 rounds I was a little worried, score had not changed still high 80&aposs sometime 90&aposs.. Wedge shots were hard, SW and GP just could not make it work. After a day of youtube watching and working with the Cobra rep things changed, I had to buy into the same shot, the same stance and keep those lines straight.. Now after 50 rounds my last 10 are below 82 and for the first time I shot a 75,77,74,78,80 all within the first 3 weeks of golf. I will never go back, my wedge game is very strong, my mid irons are great and the 3H one length is money!! So par 5 are par of birdies with a decent t-shot. I&aposm not a long hitter but these clubs gave me 10 yards more on every club!! Thanks Cobra!! Thanks for one lengths!! It changed my game. I&aposve since changed over 4 friends and they are starting to love them. Again just keep working the wedges, hit them like a 7 iron and you will be fine.. I&aposve played some real hard courses in the US over the last 10 months and have never hit over 90. My home course is a pretty hard course, most score high 80 or low 90. So when I&aposm hitting mid 70 now it just feels real good.. Also for putting look a EVNENROL it&aposs changed my putting by a least 4 -5 shots. ”

Did this help you? Yes ( 7 ) ··· No ( 1 ) ··· ( Report )

Email verification required to report.

Write a review!

Privacy Policy
- +

* email for verification only
* plain text only

It will look like this :

Review by , 1 minute ago.

Did this help you? Yes ( 0 ) ··· No ( 0 ) ··· ( Report )

Q & A

Q & A

Questions · 2
Login first to ask your question.

i am 5 ft 4 inch in height-- what club length is best for me

William E.     2 months ago     0 of 0 found this useful

Login to answer.

Best Answer

Only a fitting would say for sure but probably at least a half inch shorter than standard.

Rudi Fann     2 months ago     0 of 0 found this useful

What grips are on the f9 one length?

Charles G.     5 months ago     0 of 0 found this useful

Login to answer.

Best Answer

The stock grip on these irons is the Lamkin Crossline blue and white. If you are looking at a used set, unfortunately, we are unable to verify the specific grip on those as they may have been changed previously.

Rudi Fann     5 months ago     0 of 0 found this useful