Callaway Quantum Max Irons vs Quantum Max OS Irons
More Distance or Higher Launch?
Callaway
Quantum Max Irons
2026 model
- Release date
- Feb 27, 2026
- MSRP at launch
- $1,099.99 (set)
Callaway
Quantum Max OS Irons
2026 model
- Release date
- Feb 27, 2026
- MSRP at launch
- $1,099.99 (set)
Which to choose
The biggest difference is ball flight. Testers found that the Quantum Max OS launches higher than the standard Quantum Max, comes down steeply and stops quickly on greens. Its long irons are easy to get airborne. The Quantum Max is aimed more at distance: most testers found it long, and next to it the OS can carry slightly shorter and roll out less. Testers rated both as very forgiving on toe, heel and low strikes.
At address the OS has a larger head, a thicker topline and more offset: 0.19 inches against 0.15 inches in the 7-iron. Both have a 29° 7-iron loft. The Max feels lively and powerful. Testers split on the OS: some called it solid, others firm and loud.
Choose the Quantum Max Irons if…
you're a mid-to-high handicapper (around 12 and up) who wants forgiveness plus as much distance as possible, with a lively, powerful feel and a slightly less bulky look than the OS.
Choose the Quantum Max OS Irons if…
you're a beginner or high handicapper with a slower or average swing speed who often misses the centre of the face and struggles to get the ball airborne, and you want high, steep shots that stop on the green.
Common questions
- Which launches higher?
- The Quantum Max OS. Testers agree it launches higher than the standard Quantum Max and lands more steeply.
- Which is longer?
- Most testers found the Quantum Max long. Next to it, the OS can carry slightly shorter and roll out less, even though both have a 29° 7-iron loft.
- Which has more offset?
- The OS: its 7-iron has 0.19 inches of offset, against 0.15 inches on the Quantum Max. Its head and topline are also larger.
Written by golfclubase with AI from our summaries of published reviews and test videos and the makers' published specs (Oct 25, 2026).
Key differences
- Offset: the Quantum Max OS Irons is 1.1 mm larger than the Quantum Max Irons
- Club length: the Quantum Max OS Irons is 0″ longer than the Quantum Max Irons
Specs side by side
Quantum Max Irons: 7I; Quantum Max OS Irons: 7I (US models).
| Quantum Max Irons | Quantum Max OS Irons | |
|---|---|---|
| Loft | 29° | 29° |
| Lie angle | 62.3° | 62.3° |
| Offset | 3.7 mm | 4.8 mm+1.1 mm |
| Face material | Steel | — |
| Club length | 37.25″ | 37.25″+0″ |
Values are as published by the makers. Sources are listed on each model's page.
The Numbers, Visualized
Where They Sit Among Irons
Compared with the reference club of every model in Irons on golfclubase (US specs; 7I / 7I). The line is the full range, the band the middle half, the tick the median.
Both rank #27 lowest of 107.
Both rank #51 highest of 107.
Quantum Max Irons ranks #24 largest of 70. Quantum Max OS Irons ranks #6 largest of 70.
Quantum Max Irons ranks #22 longest of 106. Quantum Max OS Irons ranks #9 longest of 106.
What reviewers say
Quantum Max Irons
What reviewers like
- Excellent forgiveness on toe, heel and low strikes
- Holds ball speed and carry well on mishits
- Reliable distance and dispersion from shot to shot
- Strong distance for a game-improvement iron
- Lively, powerful feel at impact
Watch out for
- Feel is not soft or forged-like despite marketing claims
- Offset and bulky profile won't suit golfers wanting a compact look
- Price at the upper end for game-improvement irons
- Gives limited feedback on where the ball struck the face
Quantum Max OS Irons
What reviewers like
- Very forgiving, holding ball speed on toe, heel and low strikes
- Launches higher than the standard Quantum Max for easy height
- Steep landing and good stopping power on the greens
- Oversized head and thick topline look reassuring at address
- Long irons are easy to get airborne
Watch out for
- Limited workability for golfers who like to shape shots
- Bulky profile and offset may not suit players who prefer compact irons
- Short irons can feel clunky to stronger players
Lofts and clubs offered
- Quantum Max Irons
- 4I / 5I / 6I / 7I / 8I / 9I / PW / AW / GW / SW
- Quantum Max OS Irons
- 4I / 5I / 6I / 7I / 8I / 9I / PW / AW / GW / SW