KING F9 SPEEDBACK Irons - Single Irons

SPEEDBACK™ Technology pushes the boundaries of conventional iron shaping to optimize low CG and high MOI, creating Cobra’s longest, fastest and most forgiving iron.

Please allow 3-5 additional days for custom clubs to be built before shipping.

KING F9 Irons
  • What IS IT

    SPEEDBACK Technology pushes the boundaries of conventional iron shaping to optimize low CG and high MOI, creating Cobra's longest, fastest, and most forgiving iron.

  • WHO IT'S FOR

    Ideal for 5-25 handicaps with moderate to faster swing speeds seeking a more forgiving distance iron with enhanced feel.

  • Why we made it

    In early testing, we found drastic performance improvements were possible if we pushed the shape beyond the boundaries of the conventional game-improvement iron. This lead to the introduction of SPEEDBACK Technology - a revolutionary advancement in iron shaping that optimizes low CG and high MOI for true distance with forgiveness.

King F9 Irons Grass Laydown

SPEEDBACK DESIGN

Much like a wide-body kit adds to the stability of a racecar, SPEEDBACK shaping utilizes a belt of steel that adds mass low and wide, creating a lower, deeper CG that maximizes ball speed, launch and carry while maintaining a conventional sole width.

CNC Milled face driver

FORGED E9 PWRSHELL FACE

An E9 variable thickeness face design is 1.8mm at its thinnest point, expanding the SWEET ZONE to increase distance on off-center hits. A forged PWRSHELL design features a deep undercut sole with a 1.2mm internal Speed Channel that returns more energy to the ball for higher launch and faster ball speeds.

King F9 Bulge

HIGH MOI DESIGN WITH TUNGSTEN

SPEEDBACK adds more mass low and wide compared to a conventional game improvement iron. 33 grams of tungsten is combined in the heel and toe in the 4-7 iron, increasing MOI for maximum stability, higher inertia, and substantial improvements in ball speed, distance and forgiveness.

King F9 E9 Face Tech

BEST IN
CLASS FEEL.

A 3-piece multi-material medallion combines aluminum, TPU (Thermoplastic Polyurethane) and acrylic foam. These lightweight materials damp vibrations to promote a softer, more responsive feel that is not normally found in a game improvement iron.

KING f9 Irons

CNC MILLED
FACE AND GROOVES.

CNC milling is a highly precise manufacturing method that is typically only found in forged player's irons. This process allows us to create perfectly flat faces, and precise lofts and groove shapes in every iron we manufacture.

CNC Milled face driver

Progressive
spin technology.

Progressive groove shapes are CNC milled into each face to optimize spin performance in the long irons, mid-irons and wedges.

4-7i MILLED V-GROOVES

4-7i
MILLED V-GROOVES

CNC milled V-grooves reduce spin for increased distance and flight time.

8i-PW MILLED U-GROOVES

8i-PW
MILLED U-GROOVES

CNC milled U-Grooves optimize spin for improved control and accuracy.

GW-SW WEDGE GROOVES

GW-SW
WEDGE GROOVES

Tighter-spaced, U-grooves increase spin for improved precision around the green.

Progressive
hosel lengths.

Shorter hosels in the long irons (4-6) lower the CG to increase launch and distance, medium hosels in the mid irons (7-9 iron) create a gradual transition from the long irons and taller hosels in the wedges (GW-SW) raise the CG to promote control and accuracy.

CNC Milled face driver

TOUR AFTERMARKET
STEEL SHAFT

Tour Aftermarket Shafts

KBS TOUR 90 (S, R)

The lightweight design of the KBS Tour 90 makes it ideal for players with moderate to faster swing speeds seeking high launch with added spin to maximize distance without sacrificing control.

PRACTICE SMARTER.
IMPROVE FASTER.

COBRA CONNECT grips feature embedded sensors that work in conjunction with the Arccos Caddie mobile app - the award-winning connected golf system that helps players of all skill levels make smarter, data-driven decisions and shoot lower scores.

Learn More
Cobra Connect Logo
GET BETTER, FASTER.

Automatic Shot Tracking

Receive real-time data for all aspects of your game.

True Club Averages

True Club Averages

Select the right club for every shot with SMART DISTANCE insights.

Advanced Analytics

Advanced Analytics

Use detailed performance breakdowns to guide equipment choices, practice & more.

Golfs Smartest Caddy

Golf's Smartest Caddy

Trust artificial intelligence to reveal your best strategy tee to green.

CONNECT YOUR
ENTIRE SET.

With your purchase of a set of KING F9 SPEEDBACK irons, you will receive your choice of FREE additional Arccos Caddie Smart Sensors or COBRA CONNECT grips so you can connect your entire bag (from your driver to putter) and experience your first set of Smart Clubs.

Receive game changing insights FREE for 3 months, then subscription rates apply.

How to redeem:

  1. Purchase a set of KING F9 SPEEDBACK irons.
  2. Download the Arccos Caddie app on your mobile device.
  3. Follow the instructions through the Arccos Caddie app to redeem your FREE Cobra Connect grips or Smart Sensors.

Download Arccos Caddie:

Arccos Caddie
Arccos Caddie Apple Arccos Caddie Google
Track And Tune

Specifications

Iron Loft Lie
Angle
Offset
(mm) 
COBRA CONNECT Length
(Graphite & Steel)
Standard Length
(Graphite & Steel)
Graphite
Swing Weight
Steel
Swing Weight
RH/LH
4 19.5° 62.0° 5.4 39.50" 39.25" C9 D1 RH/LH
5 22.5° 62.5° 4.6 38.75" 38.50" C9 D1 RH/LH
6 25.5° 63.0° 3.9 38.00" 37.75" C9 D1 RH/LH
7 29.5° 63.5° 3.2 37.50" 37.25" C9 D1 RH/LH
8 34.0° 64.0° 2.6 37.00" 36.75" C9 D1 RH/LH
9 39.0° 64.5° 2.0 36.50" 36.25" C9 D1 RH/LH
PW 44.0° 65.0° 1.5 36.25" 36.00" D0 D2 RH/LH
GW 49.0° 65.0° 1.0 36.00" 35.75" D0 D2 RH/LH
SW 54.0° 65.0° 1.0 35.75" 35.50" D1 D3 RH/LH

Shafts


ATMOS 6
ModelFlexShaft WeightKick PointTrajectorySpinTip Diameter
Fujikura ATMOS 6 Stiff 66g Mid Mid Mid 0.370
Fujikura ATMOS 6 Regular 63g Mid Mid Mid 0.370
Fujikura ATMOS 6 Lite 62g Mid Mid Mid 0.370

KBS Tour 90
ModelFlexShaft WeightKick PointTrajectorySpinTip Diameter
KBS Tour 90 Stiff 102g Mid-Low Mid-High Mid 0.370
KBS Tour 90 Regular 95g Mid-Low Mid-High Mid 0.370

Grips

COBRA Lamkin Crossline Connect

COBRA Lamkin Crossline (58+) Connect - Black

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