Combo irons combine different iron models that offer more height and forgiveness in longer irons, while the shorter irons provide greater control and feel on approach shots.
In recent years, combo iron sets have become increasingly popular, especially among the game’s elite, with estimates for tour players employing combo iron sets running as high as 80%.
Combo iron sets don’t just benefit the best in the game. In reality, combo sets can benefit any level of player. In this piece, we’ll break down the reasons why combo sets can work, the key characteristics of a good combo set, and what type of player would suit which type of combo set.
What Is A Combo Iron Set?
A combo iron set blends two or more different iron head designs to provide the golfer with the performance characteristics they need throughout their set. Typically, that means using more forgiving cavity-back or hollow-body irons in the longer clubs, while employing more compact players' irons or blades in the shorter irons, where control and feel become increasingly important.
Combo sets aim to create consistency in launch conditions, spin, and carry distances, ensuring predictable ball flights and appropriate distance gaps between clubs. A useful starting point is your seven-iron, using its peak height and carry distance as a benchmark when assessing the performance of your longer irons.
With the popularity of combo sets increasing, manufacturers are shaping their iron ranges to make blending easier. Srixon's ZXi range, along with iron families from Mizuno, Titleist and TaylorMade, offers different head designs that can be combined while retaining consistent looks, feel and performance characteristics.
The table below illustrates how different combinations might suit golfers of varying playing abilities and swing characteristics.
|
Player Type |
Long-Iron Head |
Short-Iron Head |
Typical Switch Point |
|
Low handicap / strong ball striker |
Players' cavity-back |
Muscle-back blade |
4–5 iron |
|
Mid handicap / improving golfer |
Hollow-body or forgiving cavity-back |
Compact players' cavity-back |
6–7 iron |
|
Higher handicap / developing golfer |
Game-improvement cavity-back |
More compact, forgiving cavity-back |
7–8 iron |
|
Slower swing speed |
High-launch, forgiving hollow-body |
Forgiving cavity-back |
7–9 iron |
These are illustrative configurations rather than fixed recommendations. The ideal crossover point depends on the golfer's ball striking, carry distances, launch, spin and peak height, rather than handicap or swing speed alone. A professional fitting establishes which combination delivers the most consistent performance throughout the set.
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Five Signs A Combo Set Could Benefit Your Game
If you have been toying with the idea of switching to a combo set, we’ve picked out five telltale signs that you can analyse from your existing iron play and iron setup, which can help you decide whether you’d be a good fit for a combo iron set.
1. Struggling with Distance Control
A key component of good iron play is having consistent distance gapping between each iron.
It’s sometimes hard to notice, especially when you are on the course because weather conditions can have a big impact on club selection, but you can spot inconsistencies if you visit a driving range or have access to some form of launch monitor technology.
On average, carry distance gapping between each iron should be around 10-20 yards (9-18 metres).
We sometimes see distance gapping issues where players have attempted to create their own combo set.
Long irons that have deep cavity, multi-material construction, and stronger lofts can send the ball a long way, but the distance gap can become substantial at the crossover point if the crossover is to a more traditional iron type, with weaker lofts.
2. Two Clubs, Same Distance
If you find that your six iron isn’t going much farther than your seven iron on comparable shots, you’ve got a problem.
This can happen when you aren't generating enough clubhead speed or launch with your longer iron to achieve the additional carry distance you would expect.
Switching to a more forgiving head with different launch characteristics can help restore the distance gap between the two clubs.
On the course, that can mean second-guessing club selection. Where you feel comfortable you have the right yardage for your six iron given the conditions, and you see the ball come up 10 yards short after a reasonable strike, you’ll likely second-guess the yardage or club selection the next time you’re faced with the same situation.
3. You Strike Your Short Irons Better Than Your Long Irons
Often the case if a player is using blades.
Soft forged blades provide amazing feedback from centred strikes, which, if we are looking at seven-iron through pitching wedge, is relatively easy. However, when it comes to the long irons, results vary more drastically.
Confidence plays a big part. While you feel confident that if you have a seven-iron or less into the target, you can hit it, memories of poor strikes and errant shots always seem to creep in when a longer iron is pulled from the bag.
Even with a decent strike, the longer iron might not have the control if the spin and launch numbers aren’t good. Spin and launch are accurately measured on the launch monitor, but to the naked eye on the golf course, it could be a lower-than-expected trajectory and a ball that just keeps running when it hits the green.
4. The Step From Hybrid to Longest Iron Feels Awkward
Common feedback from golfers who come for a fitting at the Nine by Nine Golf studio, especially if they weren’t fitted for either option.
Hybrids can provide that perfect solution between the longest fairway wood and the longest iron in your bag. However, problems can arise if the distance gapping between the hybrid and irons is completely wrong.
Easing a hybrid to fit a distance that your longest iron can’t cover can end up with a ball coming out too low and with not enough spin on it to control the shot. Forcing the iron will lead to a poor strike, which can end up nowhere near the intended target.
Hybrids tend to be fitted with graphite shafts, which will be cut to a longer length than the equivalent steel-shafted iron, which can also have an impact on distance control, but is often overlooked as golfers focus on trying to get the right loft.
5. Your Swing Speed Has Changed
As we get older, we need to adapt the makeup of our golf bags because we can’t generate the same clubhead speed we did when we were younger. That can make certain long irons and mid-irons less effective. Fred Couples, the 1992 Masters Champion and former world number one, was nicknamed “Boom Boom” because of the prodigious distances he hit the golf ball.
Now, in his late 60s, the longest iron in Couples’ bag is his seven-iron. Couples employs a mixture of lofted fairway woods and hybrids to give him the distance, height, and stopping power he needs, while giving him more forgiveness and consistency on off-centre hits.
You don't necessarily have to remove your longer irons altogether. A combo set can allow you to retain the shorter irons you feel comfortable with while introducing more forgiving, higher-launching models where you need additional help.
Conversely, if your swing speed has increased as your game has developed, you might benefit from introducing more compact iron heads into your set, particularly if you're now looking for greater control and a different ball flight.
When A Combo Set Might Not Work
It can be easy to get carried away with the idea that purchasing a set of combo irons will be the answer to your problems.
However, consistent poor shots coupled with inconsistent ball striking can be attributed to issues within your swing, which need to be addressed before making a decision about whether a combo iron set can help you.
Some golfers have also made attempts to create their own combo set based on what they feel will work right for their games.
The idea seems good in principle, but the reality is that unless they have their own launch monitor, they are relying on guesswork, which doesn’t lead to good results on the course.
Inconsistent spin, launch, and carry numbers lead to problems we’ve already identified earlier in this piece.
Lastly, and arguably the most important consideration, if your existing irons are delivering consistent carry distances, predictable ball flights and reliable results throughout the set, there may be little to gain from changing them.
Combo iron sets can transform your iron play. You can have forgiveness where you need it most and greater control and precision when the time is right to attack pins. You can have consistent distance gapping and add consistent looks and feel throughout your combo set, which all help to improve your confidence on the course regardless of what iron is in your hand.
Making the right combo iron set comes down to being fitted, and at Nine By Nine Golf, we have helped golfers of every playing ability get more from their iron game through fitting them for a combo set.
When you are fitted properly, the correct crossover point is established from one model to another through proper distance gapping, spin, and launch rates. But it doesn’t stop there.
Fitting the correct shafts at the correct length and lie angle can improve accuracy and strike location, further helping your confidence on the course.
At Nine by Nine Golf, the information gathered during your fitting determines how the finished set is assembled, from the combination of iron heads and crossover point through to individual lofts, lie angles and shaft specifications.
If you are already thinking about how to improve your game and score consistently better next summer, book yourself in for a tailored iron fitting session at Nine By Nine Golf, and our experienced fitter will help you uncover what will work best for your game.
