The Maltby MPF Pro Series+ .370 X-Stiff is heavier than average for graphite iron shafts at 3 oz (85 g), while its 3° torque is on the lower side. Its mid launch / mid spin flight profile and stable / control-oriented character make it best suited to medium-fast or fast tempos.
Iron shaft specifications
Maltby · MPF Pro Series+ .370 X-Stiff · Iron Shaft
Material: GraphiteFlex: X-StiffWeight class: Mid-light (80-99.9 g)Flight: Mid launch / Mid spinTip: Parallel tip
3 ozWeight
3°Torque
X-StiffFlex
MidLaunch
Material-matched benchmarks
How this shaft compares
Numeric comparisons use graphite iron shafts in this database.
Weight
Above average
3 oz
Weight is above average among graphite iron shafts in this database.
Torque
Below average
3°
Torque is below average among graphite iron shafts with published numeric torque.
Balance point
Very low
50.5%
Balance point is very low among comparable graphite iron shafts.
At a glance
Shaft profile
MaterialGraphite
TipParallel tip
LaunchMid
SpinMid
StabilityStable / control-oriented
Tempo fitBest suited to medium-fast or fast tempos
Overview
Model information
| Manufacturer | Maltby |
|---|---|
| Model | MPF Pro Series+ .370 X-Stiff |
| Category | Iron Shaft |
| Catalog year | 2026 |
| SKU / code | MA0404 |
| MPF rating | 5B1M |
Full specifications
Technical details
Weight & flex
Weight3 oz (85 g)
Weight classMid-light (80-99.9 g)
FlexX-Stiff
Torque3°
Bend pointmid
Kick pointMid
Tip stiffnessfirm
Tip flexfirm
Butt flexfirm
Balance point50.5%
Build & dimensions
MaterialGraphite
Tip typeParallel tip
Tip diameter0.37 in (9.4 mm)
Butt diameter0.6 in (15.2 mm)
Shaft length41 in (104.1 cm)
Length rangeSingle-length blank; tip-trim by club
Parallel tip length5.5 in (14 cm)
Club rangeIrons, typically 3i-PW (trimmed from parallel blank)
FinishPainted composite / graphite finish (varies by model) (family-based) (family-based)
Flight & feel
LaunchMid
SpinMid
Trajectory / spin profileMid launch / Mid spin
Stability profileStable / control-oriented
Launch assistanceNeutral launch assistance
Feel profileVibration-damping graphite feel, stable through impact
Relative weight positionAbove average for graphite iron shafts
Relative torque positionBelow average for graphite iron shafts
Player fit
Tempo fitBest suited to medium-fast or fast tempos
Transition fitHandles aggressive transitions well
Control vs speed biasSlightly speed biased
Long-iron playabilityGood long-iron playability
Short-iron controlBalanced short-iron feel and control
Likely swing-speed fitFaster iron swings / stronger players
Target playerModerate swing speeds seeking lighter weight with balanced launch and control
Golfer fit summarySlightly speed biased; best suited to medium-fast or fast tempos; mid launch / mid spin.