ONOFF Forged Iron Kuro 2026 ( #4 / #5 )

Introducing ONOFF Forged Iron Kuro 2026.

The ONOFF Forged Iron Kuro 2026 is designed to help you achieve consistent, accurate shots with a satisfying feel. Every detail is crafted to help you find a new level of control and distance.

Key Features

Sole: The sole is shaped with sharp, smooth trailing and leading edges to reduce resistance and provide a clean interaction with the turf. This design helps with maneuverability and promotes solid contact.

Feel: A unique hollow construction with a special vibration-absorbing material inside the head helps produce a soft feel at impact.

Face: The thin Full Core Groove face design improves rebound performance. The grooves are extended vertically to expand the rebound area, which helps support consistent performance on off-center hits. The face also features a cross-hatch laser milling pattern that helps with consistent spin, allowing for precise control.

Shaft & Grip: The irons are available with N.S.PRO 950GH neo and N.S.PRO MODUS3 TOUR 110 steel shafts, both chosen for their ability to promote a strong, penetrating ball flight and stable distance. The ONOFF GR grip, co-developed with STM, features a fine carbon embossed pattern for improved grip and a seamless design for consistent performance.

Customization Options

Cross Balance Technology (X CBT): This feature lets you adjust the club's weight balance. By swapping the weight screws at the grip end and the head, you can change the balance without altering the club's overall weight.

Trajectory & Weight Adjustment: The head's weight screws can be swapped out to fine-tune the club's weight and balance. The standard version comes with a 4g weight. Changing the weight by ±2g adjusts the swing balance by ±1 point, helping you find a feel that works for you. Additionally, the new Turn Weight feature works in tandem with the weight screws to allow for both broad and precise trajectory adjustments. You can set the general trajectory characteristics with the weight screw and use the Turn Weight for a final, subtle fine-tuning, helping you achieve your preferred ball flight.

RELEASE DATE: SEPT 19th, 2025

SPEC

head

shaft

Club specs: ONOFF GR grip 50g