The KBS PGI Graphite 90 .370 Stiff+ is heavier than average for graphite iron shafts at 3.17 oz (90 g), while its 3° torque is on the lower side. Its mid launch / mid-low spin flight profile and stable / control-oriented character make it best suited to medium-fast or fast tempos.
Iron shaft specifications
KBS · PGI Graphite 90 .370 Stiff+ · Iron Shaft
Material: GraphiteFlex: Stiff+Weight class: Mid-light (80-99.9 g)Flight: Mid launch / Mid-low spinTip: Parallel tip
3.17 ozWeight
3°Torque
Stiff+Flex
Low-MidLaunch
Material-matched benchmarks
How this shaft compares
Numeric comparisons use graphite iron shafts in this database.
Weight
Above average
3.17 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
LaunchLow-Mid
SpinMid-Low
StabilityStable / control-oriented
Tempo fitBest suited to medium-fast or fast tempos
Overview
Model information
| Manufacturer | KBS |
|---|---|
| Model | PGI Graphite 90 .370 Stiff+ |
| Category | Iron Shaft |
| Catalog year | 2026 |
| SKU / code | FS0078 |
| MPF rating | 4.5C1M |
Full specifications
Technical details
Weight & flex
Weight3.17 oz (90 g)
Weight classMid-light (80-99.9 g)
FlexStiff+
Torque3°
Bend pointhigh
Kick pointHigh
Tip stiffnessfirm
Tip flexfirm
Butt flexmedium-firm
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)
Flight & feel
LaunchLow-Mid
SpinMid-Low
Trajectory / spin profileMid launch / Mid-low 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 fitModerate-fast to fast iron swings
Target playerPlayers seeking flatter trajectory, tighter dispersion and a firmer tip feel
Golfer fit summarySlightly speed biased; best suited to medium-fast or fast tempos; mid launch / mid-low spin.