Most PGA TOUR rookies have very little say in the design or look of a new club. Then again, Bryson DeChambeau isn't your average rookie. The former 2015 U.S. Amateur and NCAA Men's Individual Champion made history during the Web.com Tour Finals at the DAP Championship, becoming the first player in TOUR history to win a tournament using a set of irons all the same length.
The victory added some validation and intrigue to DeChambeau's iron setup that's comprised of irons and wedges that are the same length, approximately that of a standard 7-iron. The set allows him to create a repeatable single plane motion that's taken him highest stage in professional golf.
Of course, you don't have to embrace DeChambeau's single-plane swing to reap the benefits from the single-length system.
Cobra believes the single-length concept can benefit all golfers. For the first time in company history, DeChambeau's unique iron composition will be available to the general public following the unveiling of the King F7 One Length and King Forged One Length that were built at 7-iron length (37.25 inches) with a D0 swing weight.
“I approach the game of golf a lot differently than most, primarily from a scientific standpoint,” said DeChambeau. “I have a more technical, unique swing than many other players, but there is a misconception that single-length irons are only for a single-plane swing like mine. That is simply not true. Regardless of how you swing and what your skill level is, you can benefit from the simplicity of a constant length set of irons."
King F7 and King F7 One Length
The King F7 One Length is geared for the high-handicapper, with a generous cavity-back design. A new technology called TECFLO helps optimize the performance characteristics of each club within the set.
While the heads are all a constant weight, the long irons (3-5) were cast from 17-4 stainless steel and feature a milled 17-4 stainless steel face insert that deflects at impact to boost ball speed and distance. The 6- and 7-irons have a half-hollow construction with a smaller cavity behind the face that helps with the transition into the short irons (8-PW) that are cast from 431 milled stainless steel to enhance feel.
"There's a benefit to the TECFLO system when it comes to single length," said Tom Olsavsky, Cobra’s vice president of research and development. "It gives us the freedom to change the internal weighting due to the hollow construction. Not having to use tungsten keeps cost down and helped make these irons are reality"
Each of the long irons (3-5) also utilizes Cobra's PWRSHELL technology that lowers the center of gravity (CG) for more forgiveness and a higher launch while also providing a thinner, lighter face and sole structure that yields faster ball speeds across the entire face.
Adding to the low CG design is a new "Thin, Optimized and Personalized" polymer medallion badge in the back of the cavity that's lighter than steel and allows the CG to be shifted deeper in the head.
Progressive spin technology combined with CNC milling optimizes the grooves of each iron. The 3-6 irons come with a V-shaped groove that reduces spin, while the 7-iron through pitching wedge have U-shaped grooves that increase spin. Wedge-style grooves were added to the specialty gap and sand wedge to generate the maximum amount of spin and control around the green.
The variable-length King F7 comes with the same technology as the same-length version for golfers that prefer to use a traditional set makeup.
Two King F7 hybrids (4-5H) will also be available — between 22 and 25 degrees of loft — for those that need a long iron replacement.
The King F7 and King F7 One Length (5-GW) will be available Jan. 13, 2017 (5-GW) with True Temper's King F7 steel ($700) or Fujikura's Pro 63i graphite ($800). A standard-length 3-iron, along with a 4-iron in both the King F7 and King F7 One Length, can be purchased as a custom order.
King Forged and King Forged One Length
Similar to the King F7 lineup, the King Forged and King Forged One Length were designed using the same process and technologies.
Made from 1025 carbon steel, the King Forged One Length, which utilizes a five-step forging process, was put in play by DeChambeau for the first time at the RBC Canadian Open.
The standard-length version features tungsten inserts in the heel and toe of the sole that provide a stable design and lower CG in the 4- through 7-irons. To control vibrations and enhance feel, a thermoplastic polyurethane (TPU) insert was inserted into the cavity in the 4- through 8-iron.
“The King Forged One-Length irons are perfect for my game, allowing me to perform at the highest level,” DeChambeau said. “My preferred feel is a forging, which these irons deliver along with a more compact head and reduced offset design for trajectory and shot-shaping control.”
The faces and grooves of each iron are 100 percent CNC milled for spin and trajectory control. A nickel-chrome plating was also added that improves durability.
Due to the length and weight requirements of the King Forged One Length, measures were made to get the setup just right. Additional tungsten was needed to increase the head weight in the longer irons. That meant drilling out a hole low in the head, and centered in the sole, for a tungsten plug that's only found in the irons at the top of the set. In addition to dialing in head weight, the tungsten improves launch and forgiveness.
Instead of filling in the hole that was drilled out in long irons, Cobra engineers decided to keep the space unfilled with the shorter irons, which are lighter than traditional scoring clubs due to the longer-than-normal lengths. Going lighter raises the CG in the 8-iron through pitching wedge to promote trajectory control and spin.
Cobra King Forged and King Forged One Length (4-PW) will be available Jan. 13, 2017 with a retail price of $1,000. The stock shaft offering is KBS's TOUR FLT steel shaft (120g stiff; 110g regular).