Unique technologies for increasing kick velocity, 3POINT RESONANCE TECHNOLOGY

For general irons, the geometric center, which is a point on face with greatest deflection, is usually not close to a center of gravity and impact point. inpres DRIVESTAR has effective rib positions that shift the geometric center point close to the impact and center of gravity points. This maximizes kick velocity for more powerful flight.

Increased kick performance at the impact point due to a ultra-thin sole that was archived with new high-strength material X37

Irons also use the same New X37 material as fairway woods and utility clubs. This stainless steel with high-toughness and resilience enables more precise designing. It results in 1.1 mm ultra-thin sole, increasing deflection during impact to enhance kick performance at the impact point.

Increased flight distance with low center-of-gravity design utilizing a large volume tungsten weight

High-density tungsten weight (#7:46g) used in cavity results in a 19.0 mm of CG height for higher flight and a lower and deeper center-of-gravity. Golfers can go straight for the green thanks for an ideal iron achieving high trajectory.

Sharper shape with higher face and thinner sole

We put the maximum amount of effort in our pursuit of sharper shape that is typical of irons, and have made the sole thinner, face higher, and neck longer. New inpres irons never give up both flight distance performance and shape.

inpres DRIVESTAR Shaft (Driver, Fairway Woods, Utility Clubs, and Irons)

YAMAHA jointly developed carbon shaft SPEEDER NX for Yamaha dedicated to inpres DRIVESTAR with Fujikura Composites Inc. The present model is designed to set harder end and softer grip of the shafts comparing to the previous model.


Number #5 #6 #7 #8 #9 PW AW AS SW
Loft Angle (°) 21 23 25 28 32 37 42 48 55
Lie Angle (°) 60.75 61 61.25 61.5 61.75 62 62.5 62.5 62.75
Structure X37 Precision casting, Tungsten weight SUS630 Precision casting
Shaft SPEEDER NX for Yamaha M423i (SR/R)
Shaft Weight (g) SR 47.5 49 50 51 51.5 52 53.5
R 46 47.5 48.5 49.5 50 50.5 52
Shaft Kick Point Middle
Club Length (inches) 39 38.5 38 37.5 37 36.5 36 36 35.75
Balance D0 D1 D1 D2
Club Weight (g) SR 334 341 347 353 360 367 380 380 385
R 332 339 345 352 358 366 379 379 384
40g・M60 equivalent/with BL/no logo
Shaft N.S.PRO 850GH neo (S)
Shaft Weight (g) 88.0
Shaft Kick Point Middle
Club Length (inches) 38.75 38.25 37.75 37.25 36.75 36.25 35.75 35.75 35.5
Balance D2 D3 D3 D4
Club Weight (g) 374 381 387 393 399 407 418 417 423
40g・M60 equivalent/with BL/no logo
  • *Indicated values are design values that are subject to change.
  • *Actual values for individual products may differ slightly from indicated values.
  • N.S.PRO 850GH neo specs are those provided by the manufacturer.
  • Heads are plated with nickel-chromium for all iron numbers.
  • Loft and lie angles are not adjustable.
  • Clubs: Made in Japan.
  • *Speeder is a registered trademark of Fujikura Composites Inc.
  • *N.S.PRO is a registered trademark of NHK Spring Co., Ltd.