autoFlex Korean Hidden Technology Shaft Review

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Korean Hidden Technology autoFlex Driver, Fairway and Hybrid Shafts

By Russ Ryden, Fit2Score, A Dallas Fort Worth Club Fitter & Builder
The Highlands Performance Golf Center, Carrollton Texas 
Golf Digest Certified America’s 100 Best Club Fitter

Korean Hidden Technology autoFlex Driver shafts came to the US market several years ago. I saw one in 2021. They cause a sensation with a $790 price point. They were very light weight and started a trend for light weight driver shafts. Ultimately most US golfers were not ready for light weight shafts at that price point.
I met with Korean Hidden Technology at the PGA 2025 merchandise show and shot an interview in their booth. They followed up with a shipment of review samples of every SKU they make. This is the first Korean Hidden Technology shaft that was available in the US in 2021. I had access to a single shaft then unlike now that I have measured all the shafts available at https://autoflex.us/. It was no small task measuring the 100+ shafts they supplied. KHT makes driver, fairway and hybrid shafts in each model family. Some models also have matched iron shafts. This is unique. The autoFlex is available in 4 color choices. That added some confusion to sorting the review samples. You must ignore colors and focus on the model designation printed on the shafts.

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Russ

AutoPower Flex Shaft Review

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Korean Hidden Technology AutoPower Flex Driver / Fairway and Hybrid Shafts

By Russ Ryden, Fit2Score, A Dallas Fort Worth Club Fitter & Builder
The Highlands Performance Golf Center, Carrollton Texas 
Golf Digest Certified America’s 100 Best Club Fitter

Korean Hidden Technology AutoFlex Driver shafts came to the US market several years ago. I saw one in 2021. They cause a sensation with a $790 price point. They were very light weight and started a trend for light weight driver shafts. Ultimately the recreational US golfer was not ready for light weight shafts at that price point.
I met with Korean Hidden Technology at the PGA 2025 merchandise show and shot an interview in their booth. It is on the list of videos that need to be published. They followed up with a shipment of review samples of every SKU they make. This is the first of many reviews of the 100+ shafts that arrived. They have created heavier, stiffer shafts for the US market. And, in many models they offer matched driver, fairway and hybrid shafts.

To continue reading this section of the review, you must be registered at a higher level membership.
Russ

Graphite Designs Anti-Gravity Driver Shaft Review

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Graphite Designs Anti-Gravity Driver Shaft

By Russ Ryden, Fit2Score, A Dallas Fort Worth Club Fitter & Builder
The Highlands Performance Golf Center, Carrollton Texas 
Golf Digest Certified America’s 100 Best Club Fitter

There have been a number of ultra light driver shafts in 2024. I attribute this to the autoFlex original ultralight shaft. It is a uniquely light weight shaft that was popular in Asia. When released in the US it got the attention of many, including a few tour players. I have not found many US players that swing as slow or as smooth as a light weight soft shaft requires. That fact is echoed in the 2025 release of the a heavier stiffer model line from Korean Hidden Technology for the North American golfer. I will soon get to measure both the AutoFlex and AutoPower shafts.

The Graphite Design ultra light weight Anti-Gravity aG33-3 is a few grams lighter than the now discontinued Chichibu reviewed in 2018. The Anti-Gravity is made with the latest TORAYCA M40X carbon fiber. It is a few grams lighter and slightly firmer in the mid and butt section than the earlier Chichibu.

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Russ

UST Mamiya Proforce V2 Driver Shaft Review

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UST Mamiya Proforce V2 Driver Shaft

By Russ Ryden, Fit2Score, A Dallas Fort Worth Club Fitter & Builder
The Highlands Performance Golf Center, Carrollton Texas 
Golf Digest Certified America’s 100 Best Club Fitter

The UST Mamiya ProForce has been with us for a very long time. It appears to have changed little over its time. I have told this story in an earlier review, but for those that miss it, I will repeat it.
During a lunch meeting of UST management after a tour win in the 90’s they reflected on how little attention the bland color of the shaft received in media. The engineer at the table picked up a jar of mustard and declared he would fix the problem, he would paint them mustard color. The tour rep was horrified with the idea. Over his objection, he was handed mustard colored shafts. Soon after, Jose Maria Olazabal won the 1999 Masters with the Proforce Gold golf shaft. As a result UST could not make them fast enough for the tour rep to hand out on tour. I have verified this story from three of the four that were at that lunch. It is a colorful (pun intended) story about the history of golf shaft marketing. It is now 26 years later and the ProForce shaft is still with us.

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Russ

Project X Cypher Driver Shafts Review

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Project X Cypher Driver Shafts Review

By Russ Ryden, Fit2Score, A Dallas Fort Worth Club Fitter & Builder
The Highlands Performance Golf Center, Carrollton Texas 
Golf Digest Certified America’s 100 Best Club Fitter

The Project X Cypher is one of the many shafts recently reviewed that are available in the TaylorMade 2025 shaft catalog. It is a light weight driver shaft, 40 and 50 gram models.

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Russ

Graphite Design Raune Iron Shaft Review

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Graphite Design Raune Iron Shaft Review

By Russ Ryden, Fit2Score, A Dallas Fort Worth Club Fitter & Builder
The Highlands Performance Golf Center, Carrollton Texas 
Golf Digest Certified America’s 100 Best Club Fitter

The recent review of parallel iron shafts prompted me to open the recent arrival of the box of the new Graphite Design iron shaft, Raune. I don’t fit many carbon fiber iron shafts simply because the decent ones are about double the price of steel. There is so many options in light weight steel, I rarely need to go to carbon fiber shafts. I have a few in play, one former tour pro with arthritic pain in his elbows. Another strong hard swinging pro that likes the lighter weight and over the top stiffness we can get with carbon fiber. The Raune comes in both parallel and taper tip models.

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Russ