The UST Mamiya UST dhi Series Hy .370 Stiff is lighter than average for hybrid shafts at 2.57 oz (73 g), while its 4.2° torque is on the higher side. Its mid-high launch / mid spin profile and balanced stability character make it best suited to medium or medium-fast tempos. Among the related variants, it is positioned at the heaviest end of the related weight range and a lower-torque position.
Hybrid shaft specifications
UST Mamiya · UST dhi Series Hy .370 Stiff · Hybrid Shaft
Material: GraphiteFlex: StiffWeight class: Midweight (70-84.9 g)Flight: Mid-high launch / Mid spinTip: Parallel tip
2.57 ozWeight
4.2°Torque
StiffFlex
Mid-HighLaunch
Hybrid-shaft benchmarks
How this shaft compares
Numeric comparisons use hybrid shafts in this database.
Weight
Below average
2.57 oz
Weight is below average among hybrid shafts in this database.
Torque
Very high
4.2°
Torque is very high among hybrid shafts in this database.
At a glance
Shaft profile
LaunchMid-High
StabilityBalanced stability
Tempo fitBest suited to medium or medium-fast tempos
TipParallel tip
Utility fitMore hybrid-oriented than utility-iron oriented
Overview
Model information
| Manufacturer | UST Mamiya |
|---|---|
| Model | UST dhi Series Hy .370 Stiff |
| Category | Hybrid Shaft |
| Catalog year | 2026 |
| SKU / code | US0083 |
| MPF rating | 4B2M |
Full specifications
Technical details
Weight & flex
Weight2.57 oz (73 g)
Weight classMidweight (70-84.9 g)
FlexStiff
Torque4.2°
Bend pointmid/low
Kick pointMid/Low
Tip stiffnessmed/soft
Build & dimensions
MaterialGraphite
Tip typeParallel tip
Tip diameter0.37 in (9.4 mm)
Club useHybrid / utility
Flight & feel
LaunchMid-High
Trajectory / spin profileMid-high launch / Mid spin
Stability profileBalanced stability
Launch assistanceModerate launch assistance
Feel profileVibration-damping graphite feel, more responsive loading
Relative weight positionBelow average among hybrid shafts
Relative torque positionVery high among hybrid shafts
Player fit
Tempo fitBest suited to medium or medium-fast tempos
Transition fitSuited to moderate-to-firm transitions
Control vs speed biasSpeed / ease-of-swing biased
Fairway / rough playabilityGood launch help from fairway / rough
Utility-iron suitabilityMore hybrid-oriented than utility-iron oriented
Likely swing-speed fitModerate-fast to fast hybrid swings
Golfer fit summarySpeed / ease-of-swing biased; best suited to medium or medium-fast tempos; mid-high launch / mid spin.
Same-family context
How this variant fits the family
Sibling comparisons use shafts from the same product family in this database.
Variant context
FamilyUST Mamiya UST dhi Series Hybrid
Family positionHeaviest family option; firmest listed flex; higher-flight role
Family comparisonIt sits the heaviest option in the family and the lowest-torque, firmest-twist option in the family. It is heavier than UST dhi Series Hy .370 R.
Why choose this variantChoose this middle-of-family variant for a more balanced blend of speed, launch and stability.