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KING F8 ONE Length 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.

Stock Set: 5-GW (7 Clubs)

KING F8 Irons

Regular Price: $799.00

Special Price: $699.00

Availability: In stock

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  • 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 free 1-year subscription to the Arccos 360 platform (a $250 value). 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



  • Steel: 5-GW
  • Graphite: 5-GW

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


COBRA Lamkin REL 360 Connect - Blue/Red

COBRA Lamkin REL 360 (Tour Taper) Connect - Blue/Red

Customer Reviews

Mixed Set Review by Blaine
I play F8 standard length from 5i-7i all with a 63 degree lie. I play the one length from 8i-56 wedge, all 8i length and 63 degree lie. My 60 degree is the PUR WideLow and is 1" longer then stock but 1/2" shorter than 8i length, also 63 degree lie. This has really helped with my shot making. I play more of a single plane swing and the same lie really helps as does the one length on the 8i down. Irons look really good too. (Posted on 10/1/2018)
A single step towards perfection Review by Big Rick
Had a set of single length from a different manufacture before, this is my second set and what a difference in feel and an additional 10 yards from each club. (Posted on 10/1/2018)
F8 One Length - a great help for me Review by Gordan R
I am playing F8 One Length clubs (from SW to Hybrid 3) now for about 8 weeks and effect is amazing. I always had problems with the consistency during a round, especially when playing 18 holes. I always got tired, because of my hemiparesis on the right hand side. It was very difficult to handle all clubs with their different weights and length through a round.
Now it's much easier for me, and I can play my handicap or better every round.
Greetings from Switzerland (Posted on 9/17/2018)
Great clubs Review by Jason
I recently purchased 4-pw with recoil 460 shafts. Very easy to hit. I'm fairly new to the game and one length works for me cause I dont have to worry about ball position. Plus the Arcoss is cool and can track stats. (Posted on 9/16/2018)
great idea, not looking very nice though Review by fabby
it's a brilliant idea and makes total sense. just don't like the look of them. make them look like the P790 or similar from taylor made and i'll buy them in a heartbeat (Posted on 9/11/2018)
great clubs but lose the cobra connect Review by krtstk
I love the one length irons. hate the arrcos cobra connect. I would have liked to be able to get the irons with out the sensors. They do not pick up most of the shots, no wonder scores come down. I have to take a huge amount of time during the round to enter the missed shots Its a great idea but it still has a long way to go. Offer the clubs with out the Arrcos. Iam pulling the grips and putting on my golf prides and just playing golf with out running out of battery and screwing around with my phone the entire round (Posted on 9/9/2018)
Best EVER Review by Sway
Absolutely the best Clubs I’ve ever had in my life. It is extremely easy to hit. Don’t have to think of anything to swing. And this spin I’m getting with all the shots are amazing. Paired with the volvik s4 pro ball! It’s unbelievable the performance! Hit an easy 205 shot into par 5! If you’re playing standard length you’re crazy! (Posted on 9/6/2018)
These clubs give you so much more confidence Review by Stu
I LOVE my KingF8 one length clubs!
These clubs give me much more confidence as I address each shot because my stance doesn't change and the clubs are so forgiving.
The variety of wedges has really helped my short game too.
My handicap has reduced from 33 to 30 over just 6 rounds and I know it will continue to improve.
The Cobra Connect app is brilliant and it's built in Caddie will really show its worth as on unfamiliar courses.
These clubs have given me joy when playing golf!
(Posted on 8/29/2018)
Bryson Review by Ben R
Way to go Bryson. My wife and I both play F8 one length irons and we are convinced this is the best way golf. Congrats on the W. (Posted on 8/27/2018)
excellent Review by Jim Reed
I wasn't a believer in the single length concept until I actually gave them a try. Very happy I did. Been playing for a bout a month with my new irons and they are worth every penny. Easy to hit, more consistent. Took awhile to get use to the short irons but all in all, just excellent. (Posted on 7/26/2018)
Nice Try Review by None
You failed to meet the objective and the purpose of one length irons. On the cast set you failed to offer identical loft gaping and failed to offer an identical lie throughout the set. On the forged one length set you offered one lie but failed to offer one loft gaping throughout the set. On both sets you failed to offer identical offset on each iron. Why? Once you offer identical loft gaping throughout the entire set (and it should be 4 or 5 degrees) and once you offer personal fitting to determine a players lie (it needs to be based upon a players hand height at address) and once you offer the same offset throughout the set, you will have succeeded in making a truly one length set of irons by removing all of the variables that affect consistency. You also need to do the same for the driver and the fairway metals. Once you have incorporated the three aforementioned changes, you will have succeeded in making the best set of golf clubs ever made and possibly the highest selling set of golf clubs in history by marketing the fact that all variables that affect consistency have been removed. I am hopeful and looking forward with great anticipation that you will make the changes in the 2019 one length model. (Posted on 7/17/2018)
One length F8 Review by Bgh723
I'm 70. 12 Hdcp and stopped looking for distance from my irons. My decision was trying to get consistent. These clubs are the real thing. Easy to be in the correct position no matter what the yardage is. My posture is better and I'm hitting everything in the middle of the club. (after 2 rounds and 500 balls on the range) Nothing happens with the TV clicker in your hand, so I practice. LOL. The strange thing is I picked up 5-6 yards per iron. If your looking for something different to improve your game these clubs are it. I've owned everything and I practice so if your like me don't be fearful about the investment or worried about making changes. Bryson may be a little strange be he's on to something here. By the way, forget about the 1 plane swing. Not necessary.
(Posted on 7/10/2018)
F8 One Review by sngldgt
Trying to get used to these one length irons. Will get there but it's going to take a little work. The concept is valid, one swing makes sense but erasing old habits won't be easy. Irons are easy to hit, distance varies a little but they feel and sound great. (Posted on 7/9/2018)
F8 One Length irons Review by Mike837
After spending some time doing some research on the one length F8 irons I purchased the 5-G steel set. All I can say is wow. Took them to the range to hit some balls to get a feel for them along with the yardages. All I can say is these irons are real easy to hit and the ball just goes straight and long. I couldn't tell you the last time I've been able to hit a 5 or 6 iron as far as I'm hitting it. Still need to get a little more comfortable with the P and G wedges when it comes to the length of the club. If you've been on the fence about trying one length all I can say is try it. My first time on the course with them and I had my best round ever there. Of course driving and putting come into play, but when it came to hitting my shot into the greens I was money with them. Very happy and can't wait to hit the links again with them!!! Also the cobra connect was easy to get started and I look forward to using it more as the GPS was matching my range finder. Only thing I don't like about the cobra connect is having to have my phone in my pocket. (Posted on 7/9/2018)
vern Review by vern
awesome 17 handicap but swing more consistant after 2 week (Posted on 7/9/2018)
King Cobra F8 irons Review by Lanika
I liked what I read about this product...I like the part about the length of the staffs are all the a seven smart on your part. I’m so impressed...I am going to purchase a set of King Cobra F8 One Length Irons today. (Posted on 6/28/2018)
Loving these Clubs - give them a try Review by THOFF
I picked up a set of one-length and just finished my third round with them. I am a mid-handicapper and was looking for a new edge. These are extremely comfortable and have greatly reduced my misses. The length is the same for 7-gap and longer for clubs above 6-4. The longer Gap and PW took little time to adjust to and the longer irons are a breeze at set-up of course. I am very pleased with them and love the consistency in my game! (Posted on 6/10/2018)
great set Review by pascal Mui Ne
easy and forgiving, great buy (Posted on 6/9/2018)
Love the Arccos system!! Review by L Rodgers
This system was included with the purchase of my new Cobra King F8 irons. I absolutely love it! I was hesitant to use it at first because I was worried about draining my phone battery. That was a non-issue, fortunately. Very easy to set up and sync each club, very easy to download and setup app on iPhone. The system works very well, I couldn't be happier! Really shows you the weak part of your game and what you need to work on. I have no doubt that this will help me take a few strokes off my handicap. (Posted on 5/11/2018)
Logical design and great results Review by Lou
The idea of a set of irons at the same length as my 7-iron appealed to my sense of logic. By coincidence, my 7-iron was the club in my bag that felt the most comfortable in my stance and the one that was most consistent for distance. Now I own an entire set of irons at the same ideal length. Out of the bag first trip to the driving range I saw 10+ yards further with the new 7-iron. Loft and trajectory on the wedges were superb. Around the greens I'll need to work on the oddity of chipping and pitching with this length club. Feels funny but I'll practice and adapt. Even the long clubs, 4 & 5, are a comfortable length since they are the same length as my normal 7. The result is better control. The technology and design make sense, club loft and lie is calculated for ideal shots at the same length so each club behaves as it should and I'm enjoying a standardized stance and swing. Next step is to setup my Connect app with my sensor equipped clubs! (Posted on 4/22/2018)
F8 one Review by Chris P
Switched over from sterlings when the F8s came out. Glad I did, the long irons fly higher and more consistent, the feel is awesome, like literally some of the best feeling clubs I’ve played. I’ve got the 5-GW and I now love 200 years aproach shots, a bogey used to be my best case scenario from that distance. Well done cobra. (Posted on 4/21/2018)
F8 One length. Review by Drew
Just recently had these clubs, i have to say i am thus far very pleased. I was a little apprehensive about changing to One length, but finding the switch very easy. The ( we will call them long irons) are a joy to hit, no long feeling concerned about the extra length, and I am finding no problem getting them up in the air. The (we will call them short irons) are a little strange at first, being 2inch longer, but i have found them a joy chipping around the green. Early days, but glad i took the plunge. (Posted on 4/19/2018)
best yet Review by marlin
playing 30 odd years have used many irons,very surprised how these irons are easy to work have great feel distance gaps just uncanny how well they performed .hybrids not for me, driver and three wood F8 good choice would highly recommend to everyone to at least give them a tryout (Posted on 3/22/2018)
One lengths from now on Review by Frank Laird
This is my second set of cobra one lengths. Love these clubs. Took about 3-4 rounds for me to mentally get used to them but after that I’ve played my best golf ever. I am much more consistent and they are much better on my arthritic knee. The 2017 set was great, the 2018 set even better. (Posted on 3/20/2018)
average Review by sam
I play one length currently and these are ok. My current version are considered Pro, so maybe thats my issue. (Posted on 3/19/2018)
F8 irons Review by lee
love the one length F8... same swing every time...customized mine 3 degrees flat with UST 460 5-SW...cobra staff was very knowledgeable and helpful and friendly...i also have F8 driver...3 fairway.... 5 hybrid...60 degree wedge (Posted on 3/13/2018)
Pleasantly surprised Review by Lloyd
I wasn’t sure of the same length shaft concept. I played my first round with the Cobra F8 irons today and I’m sold on them. I’m still in the learning process obviously but these irons were a pleasant surprise.. I’m keeping these and getting rid of my other brand of irons.. (Posted on 3/12/2018)
Cobra irons Review by Don
Quality irons excellent selection of custom shafts at no upcharge you will love the single length wedges you will not be disappointed with these clubs in your bag (Posted on 3/12/2018)
King F8's Review by JRM-I
love the same size shafts...feel like i can bring better control and accuracy to my long irons. love the built in arrcos technology. (Posted on 3/12/2018)
F8 One Review by Kevin W
Just got them. So far they work as advertised. One swing for every club. Still trying to figure out the ARCOS but I’m sure that will come. Would definitely recommend giving them a try (Posted on 3/12/2018)
The future? Review by Jordan S
Bought the clubs after watching Bryson play. This is my first set of Cobras and I love them. Even if you keep your traditional swing they are worth a try. (Posted on 3/12/2018)
F8 Cobra's One Length Review by JRM-I
I love the feeling of swinging my long irons with the accuracy of my short irons. Love the built in Arrcos technology... (Posted on 3/12/2018)
F8 one Review by Brent S
I was skeptical about one length irons, but i absolutely love them. I wished i would have switched sooner. (Posted on 3/11/2018)
All one length irons Review by Gary R
The all one length irons are awesome... I believe they will be the wave of the future very shortly... I’m glad I am ahead of most of my friends by getting them first (Posted on 3/11/2018)
New F8 One Length Review by Andrew
Love the look and feel of my new F8 One Length irons. I customized with the senior lite graphite shafts. Looking forward to spring in western nys. Can’t wait to use my new 4 thru LW irons. (Posted on 3/10/2018)
Great product Review by Sonny
Best irons I’ve ever used I will never use another brand irons again (Posted on 3/10/2018)
Like Them Review by JAH
Love the same set up theory. Like the flights and weighting. Con as mentioned the chrome finish is weak the end of my clubs are dull with scrapes from simply taking divots. I have hit one shot off the toe thus far and completely tarnished the toe. I will be looking to get the toes dipped and or refinished maybe blue. (Posted on 3/3/2018)
Very satisfied Review by Greenie
Played f7 for a year and want the F8 already sold. Great work. (Posted on 2/24/2018)
F8 one length Review by Bill b
Ordered these from Peter , very knowledgeable and personable. Got the set 5-lw (9) clubs. Sound,feel, ball flight absolutely awesome!!!! Love these clubs, could not be happier with this purchase.
(Posted on 2/17/2018)
F8 Review by Alby Longballboarder
This is the first set of one length (OL) irons I have bought from Cobra. I did toy with the PinHawks SL for a while at the range but never liked the sole or the quality of the hits, so I started looking at the F7 OL irons - they were very nice especially the Forged One irons.

I was going to order the F7 but then the F8 came out - this set is now in my bag. I have the 4 iron thru Pitching Wedge. My wedges 50*, 52* and 56* remain variable length.

PROS - One of the best aspect of OL is definitely the EASE & consistency of hitting shots with the irons, from PW thru to 4 - it's all 7 iron length. No more fat or thin shots. At the range, you're working on the one single swing plane, just bring one club.

One thing though, the F8 have variable lie angle. Now it is noticeable going from PW directly 4 iron (PW is flatter while 4 iron is steeper) but it didn't effect my swing.

Form what I can see, the variable lie is by design from Cobra's research and experience so I am not going to argue with them, it still works out fine for me. The 4 iron is sweet to hit and so is the Pitching wedge.

CONS - being a new golfer to the One Length world, I am still trying to wrap my head around how fast to swing.

Should I swing the 4 iron faster than the Pitching or same speed? Where is the right & optimal ball position - the 4 iron in the variable length is usually played forward but now it's more middle. These are the new "variables" that us individual golfers need to sort out by ourselves, there is no magic cure. Plus it makes it fun to experiment & see what works the best.

Also, it takes a while to get use to this especially after decades of variable length.

Seeing a 4 iron in a 7 iron length, you go "wow" until you hit the 4 iron so sweet and then you go "WOW".

Another CON, I let a junior try my F8 8 iron and he hit it on the toe with a range ball. Now, that toe area with the chrome is marked with the dimples from the range ball. I cleaned and cleaned it and I can still see the dimple marks under certain angles of light. I have never seen how a ball strike can leave a mark on a chrome surface. Kinda shocked me that the chrome is not tougher on these iron heads. I've owned my iron sets, never once complained about any chroming issues until now. This caused me to reduce an automatic 5 star rating to 4 star because of the weaker finish.

REWARD - you'll see more consistent ball striking, the miss is less because going "wild" on a variable length long iron is way worse than that same bad swing on a 7 iron.

Nice job on the F8 irons Cobra.

SIDENOTE the Forged Pwrshell is great. I love this technology. However, I thought the Pwrshell was from 4 iron to Pitching wedge. It's not, its only from 4 iron to the 7 iron. Just note that because it's not spelled out on this website. (Posted on 2/8/2018)
Great would be ideal for handicapped golfer Review by ADP
Being a player with a very bad back and amputee 1/2 right foot the same length clubs would be ideal. Being able to swing the same way each club would be consistent for me. (Posted on 1/18/2018)

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