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. We’ve 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
When it comes to picking a graphite shaft for your driver or fairway woods, the number of choices that are available can be overwhelming, especially as golf companies continue to offer more and more in the way of custom options. Project X LZ 50: Low-Mid: 52-55: R, S, X: Project X LZ 60: Low-Mid: 64: R, S, X: Project X HZRDUS Red 65.
NEW Project X HZRDUS Shafts Flex Options: 4.0, 5.0, 5.5, 6.0, 6.5 Models: Red (Mid Spin) Black (Low Spin) Yellow (Low Spin) T800 Blue (Mid Spin) Ladies T800 (Mid Spin) Shafts with NO adapter/sleeve are uncut at 46',.335 tip Sleeve/Adapter Options: - Black TaylorMade TP +/-1. Black TaylorMade TP +/-1.5. Black TaylorMade TP +/-2. Project X Golf Open Box: No Pd-product-review-family: 21PJXHZDGRNWOD Gender: Mens Shaft Material: Graphite Model: Hzrdus T800 Condition: New, Factory Sealed Makeup: (1) Hzrdus T800 Wood Shaft FreeShip: No DropShip: No pd-rating-count: 2 pd-rating: 5 ShippingGroups: NIL, PromoDiscount: 0.85 New to the golf lingo? Check out the Golf Glossary. Seller: michigangolfcompany (3,500) 100%, Location: Grand Ledge, Michigan, Ships to: US & many other countries, Item: 63 Shaft only Condition: New Open Box Shaft: Project X HZRDUS T800 55 Graphite - Right Handed Flex: Regular (5.5) Length: 45.5' installed for Driver Lie: Standard Grip: Callaway Tip: Callaway OptiFit Tip Open Box Shafts were on display and removed from an Epic Driver. Used Callaway GBB Epic Driver 13.5° Project X HZRDUS T800 Green 55 Graphite Stiff Right Handed 45.75in from 2nd Swing Golf with the highest value trade-in program &.
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
Project X Hzrdus T800 Blue
- 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
Project X Hzrdus T800 55 Graphite Specs
(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.
By Russ Ryden, Fit2Score, A Dallas Fort Worth Club Fitter & Club Maker
The Golf Center at the Highlands, Carrollton Texas
My primary focus is premium after market shafts, yet I am always asked about the stock shafts installed drivers. The Callaway HZRDUS looks very much like the $400+ shaft used on tour, it is not. The notations are ever more subtle The stock Callaway HZRDUS is labeled T800, the tour and aftermarket shaft is the HZRDUS T1100. I recently measured a pull out, let’s look at how they differ.
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Hzrdus T800 55 Shaft Review
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Enjoy and Good Golf,
Russ