The KBS Max 80 .370 X-Stiff sits near the typical steel iron-shaft weight range at 3.92 oz (111 g), with 2.5° torque sitting near the middle of the group. Its high launch / high spin flight profile and stable / control-oriented character make it best suited to medium-fast or fast tempos.
Iron shaft specifications
KBS · Max 80 .370 X-Stiff · Iron Shaft
Material: SteelFlex: X-StiffWeight class: Midweight (100-119.9 g)Flight: High launch / High spinTip: Parallel tip
3.92 ozWeight
2.5°Torque
X-StiffFlex
HighLaunch
Material-matched benchmarks
How this shaft compares
Numeric comparisons use steel iron shafts in this database.
Weight
Typical
3.92 oz
Weight is typical among steel iron shafts in this database.
Torque
Typical
2.5°
Torque is typical among steel iron shafts with published numeric torque.
Balance point
Very low
51.5%
Balance point is very low among comparable steel iron shafts.
At a glance
Shaft profile
MaterialSteel
TipParallel tip
LaunchHigh
SpinHigh
StabilityStable / control-oriented
Tempo fitBest suited to medium-fast or fast tempos
Overview
Model information
| Manufacturer | KBS |
|---|---|
| Model | Max 80 .370 X-Stiff |
| Category | Iron Shaft |
| Catalog year | 2026 |
| SKU / code | FS0052 |
| MPF rating | 5B3H |
Full specifications
Technical details
Weight & flex
Weight3.92 oz (111 g)
Weight classMidweight (100-119.9 g)
FlexX-Stiff
Torque2.5°
Bend pointlow
Kick pointLow / tip
Tip stiffnessmed/soft
Tip flexsoft
Butt flexfirm
Balance point51.5%
Build & dimensions
MaterialSteel
Tip typeParallel tip
Tip diameter0.37 in (9.4 mm)
Butt diameter0.6 in (15.2 mm)
Shaft length43 in (109.2 cm)
Length rangeDiscrete / single-length blank
Parallel tip length5.5 in (14 cm)
Club range2i-PW, SW
FinishChrome
Flight & feel
LaunchHigh
SpinHigh
Trajectory / spin profileHigh launch / High spin
Stability profileStable / control-oriented
Launch assistanceStrong launch assistance
Feel profileCrisp steel feedback, stable through impact
Relative weight positionTypical for steel iron shafts
Relative torque positionTypical for steel 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 controlGood short-iron control
Likely swing-speed fitFaster iron swings / stronger players
Target playerPlayers seeking easier launch, added height and a smoother loading profile
Golfer fit summarySlightly speed biased; best suited to medium-fast or fast tempos; high launch / high spin.