JumboMax JumboFlat 17 Oversize ArmLock Putter Grip SIK Edition Red/White/Blue w/USA Flag 1.6in 130g

The JumboMax JumboFlat 17 (SIK Edition) is an oversized ArmLock putter grip with a super-wide, flat profile engineered to lock the forearm to the putter for a more stable, low-tension stroke.

Designed for golfers who favor the ArmLock putting method, this SIK Edition grip blends a patent-pending tapered shape with a broad, flat surface and a tacky Poly-Tour outer for secure contact. Used on tour and by Bryson DeChambeau at the 2020 U.S. Open, the JumboFlat 17 increases contact area, reduces wrist break, and lets you hold the club with less hand pressure while maintaining control.

How does the JumboFlat 17 change feel and tension during the stroke?

The JumboFlat 17’s largest flat surface among ArmLock grips spreads contact across the forearm and palm, letting you soften your grip pressure while retaining stability. That reduced tension helps keep the putter face square through impact and can smooth out inconsistent wrist motion.

• Super-wide flat face that matches forearm contour
• 1.6-inch diameter and 130-gram mass for steadiness
• Poly-Tour outer layer for tacky, consistent hand contact

Will this grip fit my ArmLock setup and standard putters?

The JumboFlat 17 is made specifically for ArmLock-style putting and fits most putter shafts commonly used in that setup. Its tapered, patent-pending shape is crafted to lock against the forearm; installation requires standard grip installation techniques and may need slight trimming depending on shaft length and hosel type.

• Designed for ArmLock positioning against the forearm
• Compatible with most putter shafts used in ArmLock builds
• Standard installation; trim options depend on shaft length

What performance benefits can I expect on the green?

By minimizing wrist break and encouraging a more pendulum-like stroke, the JumboFlat 17 helps players find better direction and pace control. The larger grip area reduces hand squeezing, which can lead to a more consistent roll and fewer short or pulled putts caused by late wrist movement.

• Improved directional consistency through reduced wrist action
• Less grip pressure required, promoting smoother acceleration
• Enhanced contact feel from Poly-Tour texture for feedback

How is comfort addressed for long practice or rounds?

The back shape is rounded to fit your fingers comfortably while the wide flat top supports the forearm, reducing hotspots and hand fatigue. At 130 grams, the grip adds a stabilizing weight without feeling bulky, and the tacky surface maintains secure contact in varied weather conditions.

• Rounded back contour that fits fingers for comfort
• Balanced 130-gram weight for steady feel without bulk
• Tacky Poly-Tour surface for reliable grip in damp conditions

Who is this for: The JumboMax JumboFlat 17 (SIK Edition) is ideal for players who use or want to try the ArmLock putting style, golfers seeking greater stroke stability and reduced wrist action, and those who prefer a larger, more tactile grip surface. It suits weekend players, club fitters, and tour competitors looking for a proven oversize solution that emphasizes control, comfort, and a repeatable putting motion.