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Big Bertha OS Irons

We Built a Cage and Unlocked More Distance. Big Bertha OS Irons promote more distance in an entirely new way, led by extraordinary light and strong Exo-Cage that allows us to strategically position weight to increase forgiveness, and helps our industry-leading, next-generation 360 Face Cup produce even faster ball speeds and more distance. 

    Now 20% Off! Learn More
    $860 - $1185
    Select & Buy Looking for Single Irons?

    Features & Benefits

    More Forgiveness and Ball Speed from New Exo-Cage Technology

    The uniquely light-and-strong design of the Exo-Cage allows more weight to be positioned in strategic locations to increase forgiveness while also helping our next-generation 360 Face Cup technology to function more efficiently.

    Even More Ball Speed from Next Gen 360 Face Cup

    Next-generation 360 Face Cup technology elevates clubface COR closer to the USGA limit to produce even faster ball speeds and more distance.

    Higher Launch for Longer Carry from Tungsten-Loaded Standing Wave

    Tungsten-Loaded Standing Wave technology in the sole lowers the center of gravity to promote a higher launch angle for longer carry and more ball speed on hits low on the face.

    Progressive Center of Gravity for Increased Control

    Progressive Center of Gravity technology entails moving the CG location progressively lower in each head from the highest-lofted to the lowest-lofted, promoting higher launch and long carry in the long-irons and increased control in the short-irons.

    Women’s and Senior Models

    Lighter in overall weight, with more loft to promote faster ball speed and higher launch angle to make it easy to get the ball in the air.

    Product Video

    Big Bertha OS Irons is rated 4.7 out of 5 by 13.
    Rated 5 out of 5 by from Great clubs! I am very happy with the Callaway Big Bertha OS. They are easy to hit and very forgiving. These features and many more are why I would recommend this club to anyone!
    Date published: 2017-05-12
    Rated 5 out of 5 by from OMG! i just purchased the Callaway Big Bertha irons 3 weeks ago and like any new/ different irons, you need to distance them. And due to the wind conditions in Florida I'm still not completely dialed in. But I've I played 3 rounds with these clubs and they are amazing! LONG AND STRAIGHT. We played Sunday afternoon and I found myself on the 18th 172 yards out with 160 over water with a club to a club and a half of wind in my face and didn't think twice about going at the pin. Golf is fun again.
    Date published: 2017-05-02
    Rated 5 out of 5 by from Outstanding irons!! I previously had the X2 Hot irons with stiff shafts, but decided to take advantage of the "trade in/trade up" offer, and move to the Big Bertha OS. Personally, I love the looks of these irons, especially the 4 and 5 iron which some say look "hybrid-ish" but to me, they just look like easy to hit long irons. I moved to regular flex shafts, and I don't know what others are doing, and saying these irons are a club shorter (maybe their previous set were really strong lofted?), but I find these irons to be as long and maybe even a bit longer than my X2 Hots were, but my accuracy has increased GREATLY! I love the feel of these irons. Some say they feel dead to them, but I still get the same feedback as my previous set. I can feel when I hit it a bit thin, I know when I hit it towards the heel or toe. I can really tell when I flush it! My normal shot is either pretty straight, or with a baby fade. I have found I can work these irons right or left like my previous set, which I thought would be very hard to do with a maximum game improvement iron. I love the finish of the club head, and although I haven't played but about 4 rounds with them, I have hit them for many hours with my SkyTrak, and I like how the face looks like they have barely hit a few balls. Overall, if you've like past versions of Big Bertha irons, you are going to LOVE these!!
    Date published: 2017-04-27
    Rated 2 out of 5 by from Length Is Inconsistent I traded in my Ping G irons hoping to gain more height with a stronger pop but neither was achieved. The length of these irons are nearly a club shorter than my Ping G irons and the feel off the face of these irons feels almost dead...
    Date published: 2016-10-15
    Rated 5 out of 5 by from I also left a Ping G to try these out, and they are most certainly longer than the G's were. I bought these and they are the finest irons I have ever hit. I hit several shots that raised the goose pimples. The thing that really surprised me is the chipping ability, they are excellent chippers. I hit a lot of shots at the flag. I need more time to really appreciate these. Yes, they are expensive, but no different than TaylorMade/ Pings/Titleist. I got tired of buying clubs that didn't work, and bit the bullet and got these. I have shoulder issues and need some help, these deliver.
    Date published: 2017-07-15
    Rated 5 out of 5 by from Love these clubs So I have only been on the course with these clubs once and I have been to the range once. What I love is the high ball flight. It is truly amazing as a low ball hitter to look up and see such a nice high arch on your ball. If you struggle to hold greens because of low ball flight these are the clubs for you.
    Date published: 2017-06-21
    Rated 5 out of 5 by from Exceptional playability The irons are exceeding my expectations. My game has stepped it up with these clubs.
    Date published: 2017-06-03
    Rated 5 out of 5 by from My scores 10 strokes better that last year. That's the main or only point to it. The best irons on the market.I hit every iron farther than any irons I have had in the pass. Very easy to hit with these irons.
    Date published: 2017-06-02
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