The Grafalloy ProCustom Par Iron Shaft is the go-to graphite iron shaft for custom clubmakers who need maximum fitting flexibility across a wide range of players. Built from lightweight graphite with a unique combination-flex design, the R/S variant covers both Regular and Stiff players from a single shaft through precise tip and butt trimming. Its mid ball-flight profile and smooth feel make it an outstanding upgrade path for recreational to mid-handicap golfers looking to move from heavy steel to a more responsive graphite option.
Most graphite iron shafts are sold in a single, fixed flex. The ProCustom's R/S combination flex changes that equation: the same uncut blank produces a Regular shaft when trimmed conservatively and a Stiff shaft when trimmed more aggressively. Clubmakers can carry a single part number and satisfy a broad swing-speed spectrum without stocking multiple flex SKUs. The A/L sibling covers Senior and Lady players with the same logic.
The 0.370" parallel tip and 43-inch raw length give the builder ample material to work with. Removing more from the tip stiffens the lower section and raises ball flight; removing less keeps it softer and promotes a higher, more forgiving launch. Butt trimming then sets the final playing length. This two-axis trimming approach means each iron in a matched set can be individually optimised while maintaining consistent feel and swing weight throughout.
The ProCustom's mid bend point sits between the low-kick and high-kick extremes, delivering a trajectory that is high enough to hold greens yet controlled enough to resist wind. This makes it versatile for parkland courses where both distance and stopping power matter, and for golfers transitioning from steel who want a familiar, non-balloon ball flight.
At approximately 77 g in R/S flex, the ProCustom is meaningfully lighter than a typical 100–120 g steel iron shaft. The weight saving translates directly into increased swing speed potential and reduced arm and wrist fatigue — particularly valuable during the back nine or for players with any physical limitations. The graphite construction also filters out harsh impact vibration better than steel, protecting joints without sacrificing shot feedback.
| Specification | Detail |
|---|---|
| Product Code | SGIPT |
| Model | Grafalloy ProCustom Par Iron Shaft |
| Flex | R/S (Regular / Stiff — combination trim) |
| Material | Graphite |
| Tip Diameter | 0.370" (parallel) |
| Butt Diameter | 0.590" |
| Raw Length | 43.0 inches |
| Tip Trim Length | 8.0 inches |
| Weight (R/S) | ~77 g |
| Torque (R/S) | 3.9° |
| Bend Point | Mid |
| Launch | Mid |
| Application | Irons & Hybrids (0.370" hosel) |
| Sold As | Single shaft (uncut blank) — tip & butt trimming required |
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