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Project X IO Steel Shaft (0.355" tip)

  • Mid-trajectory, mid spin steel shaft
  • Ideal for moderate temp swings
  • Easier to load shaft for energy storing
  • Progressive weight profiles
  • Available in Chrome finish


Project X IO Steel shafts are butt-trim to length only



Flex Weight (g) Tip Dia. But Dia. Length
R (5.5) 105
.355" .600" 36.5-40.5"
S (6.0) 110
.355" .600" 36.5-40.5"
X (6.5) 115
.355" .600" 36.5-40.5"



The new Project X IO was born from the concept that not all golfers need the same thing from a shaft. While the stronger players require launch and spin reduction to control their ball, many golfers need more launch and spin to help maximize their distances. Project X IO takes the DNA of the popular PXi shaft and evolves it by having each shaft flex designed with a specific weight and trajectory progression in mind. As Project X IO increases in flex, it gets 5g heavier and is geometrically modified to launch lower–providing an individually optimized shaft for each flex. Project X IO is ideal for players who love the stability of Project X but need an easier to load shaft profile and are looking for a lighter weight option. IO also features a unique brushed chrome finish that reduces glare and gives Project X IO a distinct look.