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KING F8 ONE Length Irons - Single Irons

COBRA’s first ever connected set of ONE Length™ irons will improve your game. Carbon fiber tuned PWRshell™ Technology delivers superior feel and long, towering shots. COBRA Connect Technology proves the performance.

KING F8 Irons

Regular Price: $115.00

Special Price $86.00

Availability: In stock

Please allow 3-5 additional days for custom clubs to be built before shipping.

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Regular Price: $115.00

Special Price $86.00

  • What It Is

    The industry's first electronically enabled set of ONE Length™ irons. Every iron is designed to match 7-iron length and clubhead weighting.

  • Who It's For

    5 to 25 handicap golfers with moderate to higher swing speeds seeking a forgiving distance iron with enhanced feel.

  • Why we made it

    The KING® F8 ONE Length™ irons have been re-engineered using progressive clubhead constructions and flighted shaft technologies to deliver improved trajectory and feel through the set.

F8 Driver Grass Laydown
F8 Irons One Length
F8 Irons One Length


Progressive clubhead construction features progressive sole widths and hosel lengths for optimized trajectory and feel from the long irons to the wedges.


Graphite and steel shafts feature adjusted flex profiles through the set for higher launching long irons and short irons with lower, more controlled trajectories.


Each KING® F8 iron is configured to match 7-iron length, head weight and swing weight to promote consistent feel through the set.

One Step Further

Flighted Shaft Technology.

COBRA® has teamed up with its shaft partners to engineer unique designs that optimize ONE Length™ performance. Utilizing flighted shaft technologies, the graphite and steel shafts feature adjusted flex profiles that make the long irons play softer and launch higher, and the short irons play stiffer and launch lower.

Higher Launch Lower Launch

Long Irons Made Easy

Featuring a lower profile clubhead design with wider soles in the 4-6 irons, the CG is moved lower and deeper to deliver higher launching trajectories. Paired with an optimized E9™ Sweet Zone™, the KING® F8 ONE Length™ long irons are faster and longer, while maintaining the simplicity and accuracy that players find appealing with the ONE Length™ set makeup.

Long Irons

A Short Game You Can Brag About

The key to a better short game is knowing your wedge distances. The KING® F8 ONE Length™ wedges give you more confidence with one setup and one swing, while an improved clubhead construction promotes lower, more controlled trajectories. The result is more consistency, more predictable distances, and closer birdie opportunities.

Short Game

for Consistency

The KING® F8 ONE Length™ irons feature cutting-edge technologies that make them even easier to hit and more consistent than ever before.

Simplify Your Golf Game

Proper setup includes foot positioning, spine angle and ball position, and many other variables. These variables change as you switch between longer and shorter length clubs, causing more room for error. With one setup and one swing you can simplify the entire process. Every player has their favorite club and for many, it's a 7-iron. With COBRA's ONE Length irons, you will find new confidence in your game, allowing you to play any iron in the bag as if it were your trusty 7-iron.


One Swing For Every Shot

In a traditional iron set, certain variables of the swing change as you switch between your longer and shorter irons, causing more room for error. With one setup and one swing, you can simplify the entire process and swing every iron in the bag with confidence like it's your trusty 7-iron.

Better Distance Gapping

Studying real-world yardage gaps using Arccos data, many players have distance overlap with their variable-length long irons. ONE Length™ long irons provide more confidence at address, promoting more consistent ball striking and carry distances.

Tighter Shot Dispersion

Having a more comfortable, repeatable swing that is shared between your long irons and short irons promotes more consistent contact. The result is more greens-in-regulation, tighter approach shots and more birdie opportunities.

More Accurate Short Game

If there are weak points in your short game, you are not alone. The KING® F8 ONE Length™ wedges provide a seamless transition from your long and mid irons allowing you to set up to every shot with confidence and attack the pin with more consistency.


Golf's most advanced technology, COBRA CONNECT™, Powered By Arccos™ features electronically enabled grips in each iron. Detailed stats are recorded automatically, allowing golfers to access an in-depth analysis of their game using the COBRA CONNECT™/Arccos 360™ app on their Smartphone.

Cobra Connect
Get the Full Experience


Leverage the power of data to take your game to the next level. Arccos 360™ users improved their handicaps 36.4 times faster than the average golfer.


COBRA CONNECT™ analyzes every aspect of your game, while providing you with advanced GPS distances to any point on the course so you can make smarter shot decisions.


Know true distance averages for every club in your bag as well as your strengths and weaknesses so you can hit more greens and lower your scores.


Lightweight COBRA CONNECT™ sensors are seamlessly embedded in the end of each grip to ensure comfort during the swing, without affecting weighting or performance.


Golfers who purchase a set of KING® F8 irons will receive additional Arccos screw-in sensors to connect the rest of their clubs, and a 90 day trial to the Arccos Caddie platform. The Arccos sensors work in conjunction with the COBRA CONNECT™ grips that come with the KING F8 irons, so users can track improvements for every club in their bag.

Woods and Wedges

Woods and Wedges

6 Sensors Included


1 Sensor Included


COBRA CONNECT™ works in conjunction with the Arccos 360™ mobile app - the award winning connected golf system that helps players of all skill levels make smarter, data-driven decisions.

RangeFinder GPS

GPS Distances

COBRA CONNECT™ provides advanced GPS distances on over 40,000 courses worldwide, so users can pinpoint exact distances (in yards or meters) to any point on the course.

Smart Distance

Smart Distance

Know true averages for every club in your bag so you hit more greens and make more birdies.

Tour Analytics

Tour Analytics

Know your strengths and weaknesses for every club so you can practice more efficiently and shoot lower scores.


Featuring COBRA's patented E9 TechnologyTM, an all-new forged PWRSHELLTM face construction delivers driver-like speed and distance.

Forged PWRShell


A multi-material carbon fiber construction damps vibrations at impact for exceptional sound and feel through the set.

Carbon Fiber Insert

Lower Profile Construction

A lower profile clubhead design lowers CG for higher launch and more clubhead speed.

Lower Profile Construction


Advanced construction technologies combine to create the ultimate progressive irons that deliver tailored performance through the set.

Full Hollow Iron

Full Hollow Iron

A hollow construction in the long irons lowers CG and delivers a highly responsive face for increased launch and speed. A carbon fiber medallion damps vibrations for improved sound and feel.

Cavity Back Iron

Cavity Back Iron

A cavity-back design in the mid to scoring irons delivers improved accuracy on approach shots. A two-piece carbon fiber insert and medallion work to deliver softer, yet more solid feel.

Specialty Wedge Design

Specialty Wedge Design

A specialty wedge design with a carbon fiber insert in the GW, SW and LW damps vibrations for improved feel and precision around the greens.

Optimized CG's

Variable hosel lengths strategically position the CG for optimum launch, speed and forgiveness through the set. Lower profile long irons with shorter hosels lower the CG for improved launch and forgiveness. Progressively taller hosels in the mid to scoring irons raise CG for improved control and accuracy on approach shots.

Dual Roll

Milled Grooves.
Spin Redefined.

CNC milling delivers more precise groove structures resulting in optimum spin and trajectory characteristics for the long irons, mid to scoring irons and wedges.

Milled V-Grooves

Milled V-Grooves

Milled V-Grooves reduce spin for maximum distance and flight time.

Milled U-Grooves

Milled U-Grooves

Milled U-Grooves optimize spin for improved control and more accurate approach shots.

Wedge Space Grooves


Tighter, wedge-spaced grooves deliver increased spin for more precise shots around the green.

Also Available In
Variable Length

The KING® F8 Variable Length Irons deliver superior feel and long, towering shots.

Learn More
One Length


Model Loft Lie Offset
(Graphite & Steel)
Standard Length
(Graphite & Steel)
Swing Weight
Swing Weight
4 19.5° 63.5° 5.4 37.50" 37.25" D0 D1 RH/LH
5 22.5° 63.5° 4.7 37.50" 37.25" D0 D1 RH/LH
6 25.5° 63.0° 4.4 37.50" 37.25" D0 D1 RH/LH
7 29.5° 62.5° 4.0 37.50" 37.25" D0 D1 RH/LH
8 34.0° 62.5° 3.7 37.50" 37.25" D0 D1 RH/LH
9 39.0° 62.5° 3.4 37.50" 37.25" D0 D1 RH/LH
PW 44.0° 62.0° 2.9 37.50" 37.25" D0 D1 RH/LH
GW 49.0° 61.5° 1.0 37.50" 37.25" D0 D1 RH/LH
SW 54.0° 61.5° 1.0 37.50" 37.25" D0 D1 RH/LH
LW 58.0° 61.5° 1.0 37.50" 37.25" D0 D1 RH/LH


Aldila Rogue Pro ONE Length 65
ModelFlexShaft WeightKick PointTrajectorySpinTip Diameter
Aldila Rogue Pro ONE Length 65 Stiff 67g Mid Mid Mid 0.370
Aldila Rogue Pro ONE Length 65 Regular 65g Mid Mid Mid 0.370
Aldila Rogue Pro ONE Length 65 Lite / Senior 63g Mid Mid Mid 0.370

True Temper XP 90 (Flighted)
ModelFlexShaft WeightKick PointTrajectorySpinTip Diameter
True Temper XP 90 (Flighted) Stiff 110g Mid Mid Mid 0.370
True Temper XP 90 (Flighted) Regular 108g Mid Mid Mid 0.370


Customer Reviews 15 item(s)

Love the one length cobra irons
Review by Todd T - 6/1/2019

I really love my new one length Cobra f8 irons. Hitting a 4-iron that is 7-iron length gives me more confidence that I am going to hit the ball well. At this point, I can’t see myself going back to multi-length irons. #OneLengthForLife

Great Concept
Review by Denard - 5/3/2019

These clubs are so comfortable to swing. Very easy to adapt to the one length concept. Had used all kinds of irons before but this is the best set of irons I've ever owned.

One length 4 iron
Review by Tony - 5/3/2019

I purchased the F8 one length irons 5 thru approach wedge and needed a 4 iron as I'm not a big hybrid guy. Love the four iron as it sounds out my set and provided the extra distance and accuracy I need. Previously a Callaway guy, this is my first encounter with Cobra Golf and I am totally impressed.

Long but not surprised
Review by Z - 4/26/2019

I started with a wedge, hit it pure and decided to expand. Like others on here I was dipping my toe in the water. I added a couple one-length's at a time for trial runs. I find them easy to hit. They are long and I am of course now buying a set of irons piece meal. Save yourself the trouble and just commit. It's worth it.

ONE Length
Review by J Coats - 4/22/2019

I decided to try out the One length irons and I’m never going back. Great idea, solid solid irons. After the demo, I switched from Ping and couldn’t be happier.

F8 One Length
Review by Azduffer - 4/15/2019

Love the clubs! Beautiful and makes the game so much simpler, and hence, even more enjoyable

F8 single length 4 iron
Review by Billy5wood - 3/29/2019

I own a set of F7 single length 5 thru gap wedge irons. I was looking for the F7 single length 4 iron to complete my set. Since the F7 4 iron was unavailable I decided to purchase the F8 4 iron. And what a difference . I love my F7 clubs but I find the trajectory in the 5 and 6 irons to be a little low. The trajectory on the 4 iron is significantly higher than that of the 5 iron. I plan on switching out my F7 5 and 6 irons for the F8 5 and 6 irons. The technology just keeps getting better.

F8 One 5 iron
Review by Jay - 3/29/2019

Easy to hit as 7 iron but flies as far as my old 5

F8 One Length
Review by JRaymond71 - 3/25/2019

I purchased the F8 One Length hybrids last year, and really like them. So this year I got the F8 One Length irons. I have always had trouble hitting my long irons, and the concept appealed to me. And what a great improvement to my game! I am a big fan. For those of you who are wondering, I can't control the trajectory as much as with conventional irons, but for a mid handicapper, consistency is more important to me. I did have a major mistake due to the technology though. Went for my 9, grabbed my 6 and absolutely flushed it! Oh well, it was a sweet hit. I will watch closely to see if any other major manufacturers come on board, but thanks Cobra, you made golf fun again.

No adjustments needed
Review by Grumps - 3/23/2019

Gone are the days of being able to hit the long irons but not the short or vice versa. Now, if I can hit one I can hit them all. Everything, from length to feel is identical. Concept of simplification has become reality.
I’m almost 70 years old and no longer have the energy to practice with all my irons, now I don’t have to. Thank you Cobra!

Review by WKS - 3/1/2019

Exactly as I expected.

Different, but good!
Review by Lifetimetattoo - 11/30/2018

I bought 2 single length wedges to match my irons. I found after being accustomed to single length irons, I was blading my wedges on full swings. I play my irons +3/4 so it’s pretty weird having a lob wedge the same length as a standard 6 iron, but oddly enough, it hasn’t affected my ball striking in any negative way. Other than loose ferrules, they’re pretty great. If you have single length clubs, I wouldn’t hesitate to get irons for the set. The consistency is very confidence building.

Single length
Review by Jnel - 11/23/2018

Exceeded my expectations

F8 one length iron
Review by Jenga616 - 11/9/2018

Club hits well and the one length works well. Easy to switch from club to club because the length is the same.

F8 one length 5 iron
Review by George - 3/12/2018

I purchase the F8 one length 5 iron with graphite shaft to test before I bought the whole set. I currently own the F7 steel shaft and wanted s lighter shaft.

The new F8 5 iron flies higher!.

Thanks Cobra for reintroducing the one length concept

Go Bryson !!

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