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Project X Catalyst Graphite Iron Shaft - 0.370" Parallel Tip

  • Graphite¬†iron shaft
  • High stability with reinforced tip section
  • ISO-6¬†technology¬†increases symmetry for tighter dispersion



Series Flex Weight (g) Torque Launch Tip Dia. But Dia. Length
Catalyst 40 4.0 57g 5.5 Mid-high .370" parallel .587" 41"
Catalyst 50 5.0 63g 4.5 Mid .370" parallel .587

Catalyst 60 5.5 68g 4.5 Mid .370" parallel .595 41"
Catalyst 60 6.0 68g 4.5 Mid .370" parallel .595 41"
Catalyst 80 6.0 85g 3.5 Low-mid .370" parallel .595 41"
Catalyst 80 6.5 85g 3.5 Low .370" parallel .595 41"



>> Project X Catalyst Iron Shaft Trimming Instructions



Catalyst is the next step in graphite iron design. Featuring our new Iso-6 material technology, Catalyst is engineered to replicate steel alloy properties over 100% better than traditional graphite laminates. This allows for an extremely stable shaft that maximizes constancy and distance control while providing the benefits of a graphite body design. Catalyst also features a reinforced tip section which, unlike traditional graphite, delivers torsional resistance comparable to that of steel—improving stability during turf interaction for better impact on less than perfect shots.

ISO-6 is a revolutionary technology that bridges the gap between what a steel shaft is and what a graphite shaft can be. Traditional graphite laminates are only 35% as symmetrical as steel. Through advanced material modeling and analysis, Project X engineers constructed a new laminate design to eliminate weak spots found in graphite iron shafts due to the lack of symmetry. With ISO-6 being 75% as symmetrical as steel (over 100% better than traditional graphite laminates), graphite iron shafts made with ISO-6 provide superior accuracy in comparison to the competitors’ shafts.