JumboMax STR8 Tech Putter Grip Non-Tapered, X-Large (+ 3/8") Tour, Counter-Balanced StabilityCore

The JumboMax STR8 Tech Tour Series XL grip swaps a traditional tapered profile for a large, ergonomic non-tapered shape that helps golfers feel the putter head and smooth their stroke. Built with a twist-resistant StabilityCore and extra lower-hand mass, this +3/8" XL model is aimed at players who want added stability, better tempo and easier alignment without changing their stroke mechanics. It works with Arccos and CobraConnect sensors, so you can pair it with shot-tracking systems.

How does the oversized, non-tapered shape change my putting feel?

The non-tapered STR8 Tech profile minimizes grip pressure differences between hands and discourages excessive wrist action. With more surface area and an ergonomic contour, it encourages a lighter hold and clearer clubface awareness, which can lead to a more repeatable setup and stroke path.

• Uniform thickness across the grip reduces forearm torque.
• Ergonomic shaping supports relaxed hands and consistent alignment.
• XL profile increases contact area for players with larger hands or glove preferences.

What stability features help prevent twisting at impact?

JumboMax integrated a StabilityCore—a twist-resistant internal structure—combined with a counter-balanced heavy lower section to keep the putter more in front of you through impact. These elements work together to smooth tempo and reduce unintended face rotation during the stroke.

• StabilityCore reduces torsion, improving directional consistency.
• Added lower-hand mass shifts balance for steadier stroke tempo.
• Anti-hook design discourages excessive face rotation on release.

Will this grip fit my putter and performance tracking sensors?

The STR8 Tech XL is offered as a standard 1-pack with +3/8" sizing, suitable for most putter shafts after proper installation. It’s tech-ready and fully compatible with Arccos and CobraConnect sensors, so you can keep using shot-tracking and putting metrics without modification.

• +3/8" diameter fits players preferring extra thickness over standard grips.
• Prepped to accept Arccos and CobraConnect sensors for data collection.
• Available in Tour Series and textured wrap variants to match feel preference.

How durable and maintenance-friendly is the Tour Series material?

The Tour Series formulation balances tack and durability for long-term use on the course and practice green. Its surface resists excessive wear while offering consistent tactile feedback, so grip replacement intervals match typical practice and play schedules.

• Durable Tour Series compound resists cracking and flattening over time.
• Surface provides reliable feel in a range of weather conditions.
• Textured wrap option available for golfers who prefer extra traction.

Who is this for: The JumboMax STR8 Tech Non-Tapered Grip, Tour Series XL (+3/8") 1-pack is aimed at golfers seeking improved putter stability, reduced wrist action and easier alignment—especially players with larger hands, those who prefer lighter grip pressure, or golfers tracking performance with Arccos or CobraConnect. It’s well suited for weekend players, coaches working on putting mechanics, and any golfer who wants a larger, ergonomic grip that promotes a smoother, more consistent stroke without altering putter head design.