What is the weight of Project X 6.5 shaft?

By Russ Ryden, Fit2Score, A Dallas Fort Worth Club Fitter & Club Maker
The Golf Center at the Highlands, Carrollton Texas

The Precision Rifle Project X has been with us for a very long time. It somehow got missed when I was in the early days of measuring the vast number of shafts in the market. I noticed its absence when I measured the Project X LZ model. It was originally made by Royal Precision Shaft Company in Connecticut. They were acquired by TrueTemper and the production was moved to Tennessee.  You will see many of the best players in the world playing this shaft. Compared to a Dynamic Gold X100, it is slightly softer in the butt and stiffer in the Mid. Unlike the TrueTemper Dynamic Gold, the  Project X profile is the same for all weight/stiffness variations. The heavier the shaft the stiffer it gets. The profile remains the same for all flex designations.

This video was sent to me years ago by Dave Eagar, who mentored me when I first began measuring golf shafts. It is a brief history of the Royal Precision Shaft Company and a tour through the Royal Precision facility and manufacturing process. It is presented by Ron Chalmers, then President of Royal Precision with Dave Makarucha of Accra Golf Shafts as camera man. ACCRA was recently acquired by True Sports, parent company of True Temper.

Lets look at the profile:

The measurements are available only to registered readers

My friend and mentor, Dave Tutelman posted this comment in another discussion of the shaft stiffness range metric. I cannot express my thoughts about this new metric any better than he did. “A big advantage of “measuring” shaft stiffness by plotting the EI curve is that you can do mathematical operations like this. You chose a simple one, with simple arithmetic. But it isn’t that hard to use a butt-biased weighting function that will predict frequency, or a tip-biased weighting function to predict trajectory height. The combination of a known EI profile and spreadsheet capabilities means it’s just arithmetic. As we understand shafts better, EI will not become obsolete; just the way we use and display it will.”

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Have you ever wondered what the number designation on your Project X shaft means? You know, the 5.0, 6.0, 6.5 and so on printed on the shaft. These numbers correspond with flexes from “regular” to “extra stiff plus”. While the flex is sometimes written on the shaft, many times it isn’t, leaving only the number to inform you of the flex. The only problem? The flex that corresponds with each number often changes based on the shaft model. And the power of Google can fail you as you search for a cohesive list of all of the flex code meanings. Even the Project X website lacks any kind of compiled guide, and only some of the individual shaft product pages reveal which numbers go with which flex.

Not to worry. Golf Club Brokers has created an extensive list of Project X shafts and their flex codes. We’ll update the list as more shafts are released in the future.

Project X Flex Codes

Original Project X Rifle Irons

Tapered

• Regular – 5.0
• Regular Plus – 5.5
• Stiff  – 6.0
• Extra Stiff  – 6.5
• Extra Stiff Plus – 7.0

Parallel

• Regular Plus – 5.5
• Stiff – 6.0
• Extra Stiff – 6.5

Original Project X Woods & Hybrids

• Regular Plus – 5.0
• Stiff – 5.5
• Stiff Plus – 6.0
• Extra Stiff – 6.5
• Extra Stiff Plus –7.0

Project X 95 Flighted Irons

• Regular – 5.0
• Regular Plus – 5.5
• Stiff  – 6.0
• Extra Stiff  – 6.5
• Extra Stiff Plus – 7.0

PXi Irons

• Regular – 5.0
• Regular Plus – 5.5
• Stiff Plus – 6.0 
• Extra Stiff – 6.5

Rifle Irons

Parallel

• Senior – 4.0
• Regular – 5.0
• Stiff – 6.0
• Extra Stiff – 7.0

Tapered

• Senior Plus – 4.5
• Regular Plus – 5.5
• Extra Stiff – 6.5

PX LZ Steel Irons

• Regular – 5.0
• Regular Plus – 5.5
• Stiff – 6.0
• Stiff Plus – 6.5

PX LZ Tour Graphite Irons

• Regular – 5.0
• Stiff – 6.0

PXv Tour Graphite Woods

• Stiff – 5.5
• Stiff Plus – 6.0
• Extra Stiff Flex – 6.5
• Extra Stiff Plus – 7.0

Project X Black Woods & Hybrids

• Stiff – 5.5
• Stiff Plus – 6.0
• Extra Stiff – 6.5
• Extra Stiff Plus – 7.0

HZRDUS Woods & Hybrids

(Woods available in Black, Yellow, and Red models. Hybrids available in Black model.)

• Regular Plus – 5.5
• Stiff – 6.0
• Extra Stiff – 6.5

HZRDUS T1100 Woods

• Regular Plus – 5.5
• Stiff – 6.0
• Extra Stiff – 6.5

EvenFlow Woods & Hybrids

(Available in Black and Blue)

• Regular Plus – 5.5
• Stiff – 6.0
• Extra Stiff – 6.5

It’s important to note that there has been much discussion around the designation of flex for Project X versus other shafts. A “stiff” flex from one shaft producer will not always equal a “stiff” flex from another. While these codes are accurate based on the flex that Project X indicates, your mileage may vary on how well the feel of the shaft matches the maker’s designation.