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Series 91 – The Duke - Demo

Series 91 – The Duke - Demo

$30 Flat-Rate Shipping.

In addition to the $30.00 shipping charge, a “deposit hold” equal to the full retail value of the putter(s) will be placed on your card. The deposit hold (aka “security deposit”) will not be collected unless the demo putter(s) are not returned to us within a 21-day period (providing for up to seven (7) days for return shipment).

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  • All Sacks Parente putting instruments come with a premium cover, our exclusive ball mark and our 30 day performance guarantee.


The Sacks Parente Golf Series 91 putting instrument was inspired by the iconic putter shape one of PGA Tour Champions Tour player Ken Duke’s favorite putters.

The SPG Series 91 features a classic style with a clean, minimalist look favored by golfers of all skill levels.

While this putter may look classic, that’s where the history ends and Sacks Parente adds the cutting-edge performance enhancing technologies that make this a superior putting instrument. The Series 91 features 3 performance technologies: a patented Ultra-Low Balance Point technology, a Weight-Forward Center-of -Gravity (CG) design, and high MOI.

The high quality milled 303 stainless steel provides a soft responsive feel at impact. The patented Ultra-Low Balance Point (U.L.B.P.) creates a smooth putting stroke that naturally squares at impact without the need to manipulate the putter head.

On an off-center hit, the Weight-Forward CG provides a consistent roll and reduces skidding to make sure your ball gets to the cup.

The Series 91 “Duke” is fitted with 50 grams of tungsten in both the toe and the heel and all towards the front of the head.  An astounding 77% of the head weight is in the heel and toe.  The MOI of this head is almost 5000, which is unheard of for this iconic shape, and ensures that there is very little energy loss or face deflection on off-center hits.

If you are struggling on the greens, and want a more natural, athletic style of putting to make more putts, the Sacks Parente Golf Series 91 should be on your list.

Lots of performance technology in a classic design.

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Product Video

Ultra Low Balance Point Technology

With minimal effort, ULBP promotes a natural pendulum motion that automatically squares the putter head and releases at impact, delivering exceptional speed control and rollout. Our patented putter technology is defined as a balance point below 5 inches from the sole of the putter and cannot be replicated.

Weight-Forward Design

The weight-forward design makes the putter easier to stroke and achieves effortless end-over-end roll. It stabilizes the hands to allow the putter head to follow its intended line to make more putts. All SPG putting instruments have maximized the weight-forward Center of Gravity (CG) to lessen the harmful sidespin (resulting from the gear effect) that rear-weighted putters can cause on putts.

High MOI Stability

There is less than 2% energy loss on a 0.5" mishit toward the heel or toe (typical putters usually lose 10-20% energy on the same putt). SPG putters create consistent ball speed and direction, even on off-center strikes, improving the greens' distance control. Say goodbye to 3 putts!

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