JumboMax JumboFlat 17 Oversized ArmLock Putter Grip — Red/White/Blue, 1.6in Diameter & 130g Stability

JumboMax JumboFlat 17 is an oversized ArmLock-style putter grip that creates a stable forearm connection for consistent, low-tension putting.

The JumboFlat 17 from JumboMax is a purpose-built, large-diameter putter grip favored by ArmLock putters and players seeking a steadier stroke. Developed to decrease wrist movement and promote a single-plane pendulum motion, this grip pairs a broad, flat face with a tapered profile and tacky outer skin. It measures roughly 1.6 inches in diameter and weighs about 130 grams, balancing bulk with feel for improved alignment and confidence on short putts.

How does JumboFlat 17 help stabilize my putting stroke?

The flat, wide top surface of the JumboFlat 17 lets the forearm lie flush against the grip, which reduces wrist hinging and isolates shoulder-driven movement. That larger contact area allows you to hold the putter with lighter grip pressure, encouraging a smoother, more repeatable pendulum motion.

• Super-wide flat face designed to match forearm contour
• Patent-pending tapered shape improves forearm contact
• Oversize diameter reduces wrist break and gripping force
• 130 g weight helps stabilize the club through impact

What makes the JumboFlat 17 comfortable to hold for long rounds?

The back of the grip is rounded to fit fingers naturally while the broad front supports the forearm, delivering an ergonomic balance between comfort and control. The Poly-Tour outer layer provides grip tack and subtle texture so the surface feels secure without needing a crushing hold.

• Rounded backing conforms to fingers for reduced fatigue
• Poly-Tour outer offers tacky texture and consistent feel
• Generous diameter lets you use minimal pressure
• Balanced weight reduces vibration and enhances feedback

Is JumboFlat 17 compatible with my putter and ArmLock setup?

The grip was developed specifically for ArmLock putting and fits most putter shafts used in that style; its tapered internal bore accommodates a range of hosel and shaft sizes. Installation is like any oversize grip: trim or use standard adapter methods if your shaft requires a custom fit.

• Internal bore suits common putter shaft diameters used for ArmLock
• Tapered design eases installation and alignment
• Works with putters converted to ArmLock or built for it
• Trim or adapter options allow custom shaft fitment

How does this grip affect feel and distance control on the greens?

The added mass and large surface area change how the club feels through the stroke, often producing a calmer tempo and more consistent contact. While feel is subjective, many players report improved distance control because reduced wrist action leads to a steadier strike and more predictable roll.

• 130 g weight helps dampen unwanted movement
• Flat face encourages a repeatable release and roll
• Tacky Poly-Tour surface maintains secure hand contact
• Oversize shape lowers grip pressure and tension

Who is this for: The JumboMax JumboFlat 17 suits players using or transitioning to the ArmLock putting method, golfers seeking to minimize wrist action, and anyone who prefers a larger, more stable grip for increased confidence on the greens. It’s ideal for competitive amateurs and professionals who want a consistent pendulum stroke, and for weekend players who need a forgiving, comfortable grip that promotes smoother putting mechanics.