The King Of The Swing Baseball Swing Trainer front view
The King Of The Swing Baseball Swing Trainer on field with other equipment
The King Of The Swing Baseball Swing Trainer indoor practice in batting cage

The King Of The Swing Baseball Swing Trainer

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King Of The Swing Trainer for Turf Shoes Only

 Unlock your full batting potential with the King of the Swing. Harness the power of your legs to increase bat speed and emulate top MLB players who train with GFS trainers in the batting cages.

The King of the Swing is a revolutionary training tool that harnesses the power of the lower half to generate a strong and efficient swing. This force, aka Ground Force, transfers up the legs, through the body, and out of the arms in a chain reaction, taking stress off of the arms and increasing bat speed. Instead of using verbal commands or visual aids, the trainer gives a feeling of directional force towards the pitcher with a return of an immediate audible feedback signal when done correctly. Once the player develops directional force that transfers throughout the body, they will challenge their ability by turning the lever at the back of the patented spring housing to increase the amount of force it takes to hear the audible feedback signal, which will result in higher velocity and consistent health of the upper half.

King Of The Swing Trainer for Turf Shoes Only


Using the lower half to power the body is a necessity for pitchers and hitters. When the lower half is engaged, higher velocities and bat speeds follow. The King of the Swing teaches the feel of utilizing the lower half so players are able to translate to game settings.


The hardest part of coaching pitching and hitting is being able to tell if the lower half is engaged. With the King of the Swing, there is no question of whether the lower half is used or if ground force is created with instant audible feedback with each use.


Proper mechanics and a directional force towards home plate and/or the pitcher are key in efficiency and ability of play for pitchers and hitters, but the hardest element to coach. Once players are able to feel how to properly activate their body, improvement follows effortlessly.


From beginners to professionals, there is no age or ability limit on the King of the Swing trainers. Beginners will use the Trainers to learn proper mechanics and the engagement of the lower half, while more advanced players who have mastered these skills will challenge their abilities with a higher compression level.


One of the most asked questions we receive is, "How do the trainers increase velocity and bat speed?" Once proper mechanics are accomplished, and the lower half is engaged, players will challenge their abilities by increasing the compression force required to accomplish the goal of sounding the trainer.


Every player has a threshold of the number of pitches or hits they can perform in a certain time frame. The goal of each player is to be consistent in performance to ensure health and longevity. Utilizing the lower half to power the pitching and hitting sequence takes stress off of the upper half, where the majority of pitching and hitting injuries occur.