The SteelFiber i-series was born from the voices of PGA & LPGA players, pursuing the performance and comfort always demanded in the world of golf.
Its unique performance comes from the fusion of graphite and steel.
The design freedom and distance performance of graphite, combined with the stability of steel, allows players to experience a more stable swing and greater distance.
SteelFiber is incredibly thin, with approximately 94km of fiber wrapped around a single shaft.
Furthermore, its quality and reliability have been enhanced by AEROTECH.
AEROTECH, which boasts a high usage rate in the American PGA & LPGA, has now joined True Temper Sports, adding a new brand that offers optimal shafts to a wide range of golfers.
The SteelFiber i-series provides golf enthusiasts with a new option, serving as a "third choice" alongside Dynamic Gold and Project X.
Simply put, an "iron combo set" is a setup that combines different iron models within a single set.
It used to be common to "match the same model from 5-iron to PW," but in recent years, even among tour pros, the trend has been to
"use forgiving long to mid-irons, and prioritize workability for short irons."
1. Why are "combo sets" becoming popular?
There are two main reasons.
They are "evolution of ball performance" and "changes in green conditions."
Increased difficulty of long irons
Modern golf balls have evolved to reduce spin to improve distance performance.
As a result, with conventional muscle-back (01 series) long irons, even professional head speeds struggle to get the ball airborne, and there are increasing cases where lack of spin makes it difficult to hold the green.
Role change from "distance" to "stopping"
For pros, long irons (4-5 iron) are not just about gaining distance.
They are clubs for attacking the pin with a high trajectory and stopping the ball firmly on the green.
Therefore, there is a growing trend to combine highly forgiving models for long to mid-irons, featuring designs with thicker soles or hollow structures.
2. If you're building with PRGR? Recommended combo
PRGR's 01-02 series actually offers a very easy lineup for combo setups.
Classic Athlete Combo: 01 × 02
・4-6 Iron: 02 IRON (easy to hit with high trajectory)
・7 Iron-PW: 01 IRON (prioritizes workability and feel)
Key points
Since the 7-iron of the 01 (loft 32°) is combined with the 6-iron of the 02 (28°),
the loft progression is natural, and a seamless combo setup is possible with minimal difference in feel.
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