The Mitsubishi Chemical Mitsubishi MMT 90 .370 Stiff sits at the heavy end of graphite iron shafts at 3.46 oz (98 g), with 4° torque sitting near the middle of the group. Its mid launch / mid spin flight profile and stable / control-oriented character make it best suited to medium or medium-fast tempos.
Iron shaft specifications
Mitsubishi Chemical · Mitsubishi MMT 90 .370 Stiff · Iron Shaft
Material: GraphiteFlex: StiffWeight class: Mid-light (80-99.9 g)Flight: Mid launch / Mid spinTip: Parallel tip
3.46 ozWeight
4°Torque
StiffFlex
MidLaunch
Material-matched benchmarks
How this shaft compares
Numeric comparisons use graphite iron shafts in this database.
Weight
Very high
3.46 oz
Weight is very high among graphite iron shafts in this database.
Torque
Typical
4°
Torque is typical 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 or medium-fast tempos
Overview
Model information
| Manufacturer | Mitsubishi Chemical |
|---|---|
| Model | Mitsubishi MMT 90 .370 Stiff |
| Category | Iron Shaft |
| Catalog year | 2026 |
| SKU / code | MR0090 |
| MPF rating | 4B2M |
Full specifications
Technical details
Weight & flex
Weight3.46 oz (98 g)
Weight classMid-light (80-99.9 g)
FlexStiff
Torque4°
Bend pointmid
Kick pointMid
Tip stiffnessmed/firm
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
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 positionVery high for graphite iron shafts
Relative torque positionTypical for graphite iron shafts
Player fit
Tempo fitBest suited to medium or medium-fast tempos
Transition fitSuited to moderate-to-firm transitions
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 playerModerate-to-fast swing speeds seeking a stable mid-launch iron profile
Golfer fit summarySlightly speed biased; best suited to medium or medium-fast tempos; mid launch / mid spin.