Bryson DeChambeau, golf’s most prominent scientist, uses JumboMax JMX UltraLite XL grips on every single club in his bag. It’s a core component of his unique, power-focused approach to the game. This article will break down the exact grips he uses, the deep reasoning behind his choice, and provide a clear guide to help you decide if a similar, oversized grip could benefit your own game.
Bryson doesn't just use large grips, he uses the largest, most technologically advanced grips available on the market. His choice isn't random, it's a specific, calculated decision that fuels his entire swing philosophy.
From his driver all the way down to his wedges, Bryson maintains consistency with the JMX UltraLite XL. He even uses a JumboMax grip on his SIK ArmLock putter, creating a unified feel and theory across his entire set of 14 clubs.
So, why would a professional golfer choose a grip that looks more like a small baseball bat than a standard golf grip? The answer lies in Bryson’s systematic approach to the golf swing. He wants to remove as many moving parts and variables as possible, and the JumboMax grips are his primary tool for achieving this.
The number one reason Bryson uses such large grips is to quiet his hands. Think about holding a thin twig versus a thick tree branch. You can easily bend and 'flick' the twig with your fingers and wrists. The thick branch, however, requires a more stable hold and encourages you to move it with your bigger muscles - your arms, shoulders, and torso.
This is exactly the effect a jumbo grip has on the golf swing. A standard, smaller grip fits neatly into the fingers, encouraging golfers to become "handsy" and manipulate the clubface with small, often inconsistent, wrist movements. This can lead to both hooks (rolling the wrists over too quickly) and slices (leaving the face open).
Bryson wants his hands to be almost completely passive. His one-plane swing is all about rotating his body and letting the arms and club follow. The jumbo grips essentially force his hands to adopt this passive role. By taking the small, twitchy muscles out of the equation, he relies on the large, repeatable muscles of his core and shoulders to control the club, leading to incredible consistency, especially under pressure.
As a coach, one of the most common faults I see is golfers strangling the club. When you grip the club too tightly, tension radiates up your forearms, into your shoulders, and locks up your entire swing, robbing you of speed and flow.
Here’s where the jumbo grip offers another advantage. Because the grip is so large and fills your hands so completely, you don't feel the need to squeeze it to maintain control. The increased surface area allows you to hold the club securely with surprisingly light pressure. DeChambeau often talks about maintaining a very light grip pressure throughout his swing, and his grips are a major enabler of that feel. For the average golfer, this can be a game-changer, automatically relieving tension and allowing for a much freer, faster, and more natural athletic motion.
Standard grips are designed to be held predominantly in the fingers. Jumbo grips, due to their sheer size, necessitate a different hold that is more centered in the palms of the hands.
This "palmar" grip creates a more stable connection between the hands and the club, almost making them feel like a single unit. It effectively locks the club into alignment with the forearms. For Bryson, this is vital. He sees the club and his arms as one straight line or 'radius' that rotates around his spine. The grip is the interface that makes this connection as stable and rigid as possible, eliminating any sloppiness at the point of action. This stable, palm-centric hold is another key piece in his puzzle for biomechanical efficiency and repeatability.
Watching Bryson dismantle a golf course, it’s only natural to wonder, "Should I try that?" While switching to grips as large as his is a major change, there are many golfers who could benefit from moving to a larger grip, even if it's just a midsize.
While beneficial for many, oversized grips aren’t for everyone. Some players, particularly those with smaller hands or who rely heavily on "feel" for delicate shots, might find them lacking. A larger grip can sometimes dampen the sensation of the clubhead, making it harder to feel the subtle feedback needed for precise chips and pitches. This is a personal preference, but it's something to be aware of during your testing.
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