Project X

Project X IO Steel Iron Shafts - .355 Tip

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Just: $54.99 - $439.92
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Description

Project X IO Steel Iron Shafts

 

Project X IO (Individually Optimized) builds upon the legacy of the PXi shaft, delivering a refined profile that adjusts dynamically across flex options. Each flex in the IO series is individually engineered with specific geometric and mass properties, increasing by 5 grams per flex level. This results in progressively lower launch characteristics as stiffness increases—ensuring each golfer receives an ideal blend of launch, spin, and stability tuned to their swing profile.

 

Tempo

 

Tempo describes how you transition from backswing to downswing, not just how fast you swing. Players with smoother, more deliberate transitions tend to benefit from moderate tempo shafts like Project X IO. The shaft’s responsive midsection offers excellent energy transfer while maintaining stability through impact.

 

Trajectory

 

Designed for a medium launch, Project X IO provides golfers with an optimal balance between peak height and carry distance. Whether you're attacking tight pins or playing in variable conditions, this trajectory profile supports controlled shot shaping without excessive ballooning.

 

Spin

 

Project X IO is engineered to deliver medium spin rates, promoting workable ball flights and ideal stopping power on approach shots. The balanced spin profile is ideal for players who want enhanced control without sacrificing distance or feel.

 

Can’t find the option you’re looking for? Reach out — we likely carry it or can get it.

 

IMPORTANT Shipping Details

  • Custom-built orders ship in 3–5 business days
  • Even expedited shipping follows standard build timelines
  • Each order is handled with precision — thank you for your patience!

 

Need it built?

 

Add all club components (shaft, head, grip, etc.) to your cart and message us during or right after checkout with your build specs — we’ll assemble your club(s) free of charge. Note: Free builds add 3–5 business days to shipping for custom work.

 

Project X IO Steel Iron Shafts Spec Sheet

 

ShaftFlexWeight (g)Butt ODTorquePar. TipSpinLaunch
PROJECT X IO 5.5 105 .600 -- .355" MID-HIGH MID-HIGH
PROJECT X IO 6.0 110 .600 -- .355" MID MID
PROJECT X IO 6.5 115 .600 -- .355" MID-LOW MID-LOW
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