Cobra King F9 Speedback Irons Adjustment Guide (2019)

The Cobra King F9 Speedback iron set has published lofts running from 19.5° in the 4-iron to 54° in the sand wedge, with lie angles progressing from 62° to 65°. Its forged construction makes small professional loft and lie changes relatively practical, with 1° a sensible first adjustment. Bending 1° strong removes about 1° of effective bounce, while 1° weak adds about 1°. For a right-handed player, 1° upright tends to move the start line left and 1° flat tends to move it right.

Cobra Irons Fitting & Adjustment Guide

King F9 Speedback

2019

19.5°–54°Loft range • 4–SW
62°–65°Lie range • 4–SW
4=39.25; 5=38.5; 6=37.75; 7=37.25; 8=36.75; 9=36.25; PW=36; GW=35.75; SW=35.5Published length
Professional bendAdjustment method

Stock geometry

Club Loft Lie
4 19.5° 62°
5 22.5° 62.5°
6 25.5° 63°
7 29.5° 63.5°
8 34° 64°
9 39° 64.5°
PW 44° 65°
GW 49° 65°
SW 54° 65°

Loft gap map

Factory spacing between clubs

4→5

5→6

6→7

7→8

4.5°

8→9

9→PW

PW→GW

GW→SW

Average loft spacing: 4.3°. A smooth gap pattern matters more than simply making one club stronger or weaker.

What a 1° bend actually changes

1° stronger-1° loftAbout -1° effective bounce
Slightly lower launch
Gap tightens to stronger club
StockFactory geometryBaseline loft, lie and sole relationship
1° weaker+1° loftAbout +1° effective bounce
Slightly higher launch
Gap tightens to weaker club

Lie-angle direction effect

1° flatRH start line tends rightLH tends left
Stock lieFactory baseline
1° uprightRH start line tends leftLH tends right

Bendability verdict

FORGED / MORE BEND-FRIENDLY

Small professional loft and lie changes are generally more practical on this construction. Start with 1° and re-measure after each move.

Construction: Cast SPEEDBACK construction with forged PWRSHELL and tungsten weighting.

1° bend reference

These are the resulting geometry numbers. They do not imply that every head is safe to bend.

Club Stock loft 1° strong 1° weak Stock lie 1° flat 1° upright
4 19.5° 18.5° 20.5° 62° 61° 63°
5 22.5° 21.5° 23.5° 62.5° 61.5° 63.5°
6 25.5° 24.5° 26.5° 63° 62° 64°
7 29.5° 28.5° 30.5° 63.5° 62.5° 64.5°
8 34° 33° 35° 64° 63° 65°
9 39° 38° 40° 64.5° 63.5° 65.5°
PW 44° 43° 45° 65° 64° 66°
GW 49° 48° 50° 65° 64° 66°
SW 54° 53° 55° 65° 64° 66°

Factory loft gaps

4→5

5→6

6→7

7→8

4.5°

8→9

9→PW

PW→GW

GW→SW

Average spacing: 4.3°. Check both neighbouring gaps before bending one club.

What bending changes

Adjustment Typical effect What to watch
1° strong Lower static loft and about 1° less effective bounce Lower flight tendency, more digging potential and a smaller gap to the stronger club
1° weak Higher static loft and about 1° more effective bounce Higher flight tendency, more sole bounce and a smaller gap to the weaker club
1° upright For a right-handed golfer the start line generally moves left Use dynamic lie and start-line evidence rather than trying to cure swing path
1° flat For a right-handed golfer the start line generally moves right Left-handed direction is reversed

Best fitting order

  1. Measure actual loft and lie before touching the head.
  2. Confirm the real problem with carry gaps, start line and turf interaction.
  3. Make the smallest useful change first — usually 1°.
  4. Re-measure the club after bending.
  5. Retest the two neighbouring clubs so the fix does not create a new gap.

Disclaimer: Safe bend limits vary by exact construction and condition. Use a qualified fitter and verify the specific head before larger loft or lie changes.

Ernie

Ernie loves documenting interesting facts about golf.

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