So, what separates muscleback irons from other game improvement irons? Muscleback irons typically have a more significant loss of distance and feel on off-center strikes, higher center of gravity, lower shot trajectory, and less forgiveness overall due to a lower MOI because of perimeter weighting. A professional golfer can consistently repeat their swing and hit the sweet spot over and over again, allowing them to prefer particular characteristics of the muscleback iron.

Unlike a game improvement iron, Musclebacks provide greater feedback to a golfer on both good and bad shots. Its no question that many golfers of all skill levels love the attractive design of the muscleback, but let’s be honest, they aren’t for everyone.

A true muscleback is only suited for the best of the best players, which is why they are so prevalent on the professional Tours. The pros know exactly what they want from the precision and performance in their irons, and Callaway relied heavily on their input in developing their new Apex Muscleback Irons.

It’s no surprise that the Apex Muscleback irons are a popular choice for Callaway Tour staffers with the likes of Phil Mickelson and Danny Lee already sporting the new Apex MB irons. To achieve the highest level of performance possible, Callaway advanced the CG positioning process for aggressively flighted shots with pinpoint control and exceptional spin characteristics. The classically crafted, premium, forged design in the Apex MB irons come in a beautiful chrome finish with a thinner topline and the smallest blade that Callaway has to offer.

Features & Benefits

The tour shaping and design of the Apex MB iron were sculpted by the feedback from the world’s best players. The result is a true muscleback with a classic shape, style, traditional, slightly thinner topline, and a beautiful bright chrome finish in the smallest blade head shape that Callaway has to offer. To further improve on the Apex MB iron, Callaway advanced its CG positioning to optimize the CG for outstanding control.

To complement the look, feel and performance of the Apex MB irons, high-performance precision grooves are built in to promote the high level of control and consistent spin that muscleback players expect out of any playing conditions. The grooves (20V) also stand out for reducing fliers from the rough to deliver even more control in less than ideal lies.

The Apex MB irons are built with 1025 carbon steel for a remarkably soft feel that Tour players want, with the precise craftsmanship they expect that can only be achieved through Callaway’s premium forging process.

Callaway Apex MB irons are available for pre-sale on Friday, October 20, 2017, and will be available for purchase on Friday, November 3, 2017. Visit a Worldwide Golf Shops location near you to try them out for yourself or get custom fit by a trained professional. If muscleback clubs don’t suit your game, try out the new X-Forged irons from Callaway. Click here to read more on the new X-Forged irons!