More Views

KING F9 SPEEDBACK Special Edition 4 Iron

When Rickie Fowler first put this iron in play at The Shriners, it proved to be a sneaky weapon. Now, we are offering a limited quantity of these F9 SPEEDBACK 4-irons, designed after Rickie’s specs. We can’t guarantee you’ll crush it 290 off the tee like Rickie, but if speed, high launch, and distance is what you’re looking for, there’s a spot for this one-of-a-kind driving iron in your bag.

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

Rickie 4 Iron
KING F9 Irons
  • What IS IT

    This Special Edition KING F9 SPEEDBACK™ 4-iron is equipped with a Graphite Design Tour AD IZ shaft and a Lamkin Crossline COBRA CONNECT™ grip, the perfect combination for driving off the tee or 2nd shots on a par 5.


    If it is fast and long enough for Rickie to use off the tee, it is sure to be a great set up for you. On tee shots into narrow fairways that call for long and controlled ball flights, the KING F9 driving iron will not disappoint.

  • Why we made it

    Why should only Tour Players get all of the special treatment? This KING F9 SPEEDBACK™ 4-iron is specially made for Rickie, and validated on Tour, so we wanted to offer you the same configuration he plays at an excellent value.

King F9 Rickie 4 Iron


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


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


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


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

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.


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


Iron Loft Lie Angle Offset (mm) COBRA CONNECT Length Standard Length Swing Weight RH/LH
4 19.5° 62.0° 5.4 39.50" 39.25" D1 RH/LH


Graphite Design Tour AD IZ 95
ModelFlexShaft WeightKick PointTrajectorySpinTip Diameter
Graphite Design Tour AD IZ - 95 Extra Stiff 99g Low-Mid Mid Mid-Low 0.370
Graphite Design Tour AD IZ - 95 Stiff 98g Low-Mid Mid Mid-Low 0.370


COBRA Lamkin Crossline Connect

COBRA Lamkin Crossline (58+) Connect - Black

Be the first to review this product

Write Your Own Review

You're reviewing: KING F9 SPEEDBACK Special Edition 4 Iron

How do you rate this product? *

How would you like us to display your name?
Not required and we won't display this. Helpful if you would like us to follow up.
We won't display this and not required unless you want us to follow up with you.