The UST Mamiya DART V 90 Stiff is heavier than average for graphite iron shafts at 3.1 oz (88 g). 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
UST Mamiya · DART V 90 Stiff · Iron Shaft
Material: Carbon Fiber / GraphiteFlex: StiffWeight class: Mid-light (80-99.9 g)Flight: Mid launch / Mid spinTip: Taper tip
3.1 ozWeight
2.3-2.9Torque
StiffFlex
MidLaunch
Material-matched benchmarks
How this shaft compares
Numeric comparisons use graphite iron shafts in this database.
Weight
Above average
3.1 oz
Weight is above average among graphite iron shafts in this database.
At a glance
Shaft profile
MaterialCarbon Fiber / Graphite
TipTaper tip
LaunchMid
SpinMid
StabilityStable / control-oriented
Tempo fitBest suited to medium or medium-fast tempos
Overview
Model information
| Manufacturer | UST Mamiya |
|---|---|
| Model | DART V 90 Stiff |
| Category | Iron Shaft |
| Catalog year | 2026 |
| SKU / code | Not published |
| MPF rating | Not published |
Full specifications
Technical details
Weight & flex
Weight3.1 oz (88 g)
Weight classMid-light (80-99.9 g)
FlexStiff
Torque2.3-2.9
Bend pointMid
Kick pointMid to high
Tip stiffnessFirm / player-oriented
Build & dimensions
MaterialCarbon Fiber / Graphite
Tip typeTaper tip
Tip diameter0.355 in (9 mm)
Butt diameter0.6 in (15.2 mm)
Shaft lengthDiscrete lengths
Length range37-41 in (94-104.1 cm)
Club range2-iron through wedge
FinishDART V graphic finish
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 positionTorque is not normally published for this steel model
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 playerPlayers seeking low torque, tight dispersion and graphite vibration damping
Golfer fit summarySlightly speed biased; best suited to medium or medium-fast tempos; mid launch / mid spin.