Prepare For Launch
The Competition Spec 521 irons are maximum distance and forgiveness irons in a traditional cavity back design. The Hot Launch C521 Irons are made with the extremely soft 431 stainless steel, providing the optimal feel for players of all levels.
FEATURES
UNDERCUT CAVITY
Expanded undercut cavity moves more weight back for maximum power and stability.
WIDE SOLE DESIGN
A 15% wider sole lowers the CG and offers superior bounce and increases launch for cleaner, high-flying shots. The wider sole design leads to cleaner turf interaction for more consistent shot making.
CHAMFERED TOP LINE
Increases face height and thickness for superior forgiveness and power.
TOE WEIGHTING
Toe-weighted design elongates the sweet spot for consistent distance and feel on every shot.
POWER LOFTED
Set up created from a super low CG location delivers extreme distance gains.
Specifications
| Model | Loft (*) | Lie Angle (*) | Shaft Length (") |
| #4 | 22 | 61 | 38.75 |
| #5 | 25 | 61.5 | 38.25 |
| #6 | 28 | 62 | 37.75 |
| #7 | 31 | 62.5 | 37.25 |
| #8 | 35 | 63 | 36.75 |
| #9 | 40 | 63.5 | 36.25 |
| PW | 44 | 64 | 35.75 |
| AW | 49 | 64 | 35.50 |
| SW | 54 | 64 | 35.25 |
| LW | 59 | 64 | 35.00 |
Shaft Specifications
The C521 irons are available in a KBS Max 80 steel shaft. The KBS Max 80 is a lightweight low-kick point steel shaft that produces a high trajectory for longer distance shots.
| Model | Flex | Weight (g) | Launch | Torque (*) |
| KBS Max 80 | R | 102 | Mid/High | 3.0 |
| KBS Max 80 | S | 102 | Mid/High | 3.0 |
| KBS Max 80 | X | 102 | Mid | 3.0 |