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Callaway Apex 21 Golf Irons


Callaway Apex 21

The Callaway Apex 21 Golf Irons provide unrivaled performance and craftsmanship, thanks to groundbreaking AI technology. A Tungsten Energy Core delivers unprecedented forgiveness, while improved shaping optimises turf interaction. All-in-all, these golf irons are sure to exceed your expectations with their superior performance and signature feel.

The First Apex Iron Designed With A.I.

Apex Irons are the first to feature Callaway's revolutionary Flash Face Cup designed with A.I., providing the ultimate combination of distance and accuracy. The unique A.I. architecture of each iron provides awesome ball speeds and spin robustness, creating a club that takes you the distance with pinpoint precision.

Consistent Launch and Increased Forgiveness

For the first time, Callaway have implemented their Tungsten Energy Core into an Callaway Apex Golf Irons. With Callaway Apex 21 Golf Irons boast 5x more tungsten than Apex 19, allowing Callaway to tailor each iron's Center of Gravity for maximum launch with incredible forgiveness on off-center shots.

Forged Blade Feel In A Players Distance Iron

Callaway Apex Golf Irons are renowned for their unbeatable feel. Crafted from premium 1025 mild carbon steel, each clubhead is forged for the perfect balance of power and softness. Plus, patented urethane microspheres help create an unbeatable sound and feel on impact. The improved shaping also assists with effortless turf response.


Club Loft Lie Offset (MM) Length
4 21° 60.5° 4.57 38.50"
5 23.5° 61.0° 4.06 38."
6 26.5° 61.5° 3.56 37.50"
7 30.5° 62.0° 3.05 37"
8 34.5° 62.5° 2.79 36.50"
9 38.5° 63° 2.67 36"
PW 43° 63.5° 2.54 35.75"
AW 48° 63.5° 2.41 35.50"

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Product information


What happens if I can’t select the combination of head, shaft & grip I want?

Email us on hi@ninebyninegolf.com or call 020 3995 5638 we would be more than happy to discuss and prepare a custom quote.

I am purchasing from outside of the UK, what happens with TAX / Customs duty?

All orders show and charge TAX / Duties at checkout so there will be no additional payment required to the courier. Goods will be delivered duties paid (DDP)

Do you offer advice prior to purchase if I am unsure which product to choose?

We understand and recommend trying / having a fitting prior to any purchase but should this not be possible our team will be more than happy to help you through any purchase. Either via email or on the phone.

I paid for Express shipping, why hasn't it shipped next day?

Express shipping is the fastest possible shipping service, unfortunately it is not a way of getting your custom order built faster.

What if I can’t find an option I want on a drop-down menu?

If you can’t find a grip or shaft that you would like to order then please do reach out to us or place an order and leave a note on the order. One of our team will be happy to help you through the process. 

Nine by Nine Golf

Nine by Nine Golf is a supplier of high quality golf equipment. Golf is about performance and the brands we sell will help you achieve your highest performance on the course.

The Nine by Nine team has a long history with the game of golf as well as a deep knowledge and understanding of the technology and products on offer.

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