The UST Mamiya UST LIN-Q Powercore HY 90 .370" X-Stiff is heavier than average for hybrid shafts at 3.17 oz (90 g), while its 3.4° torque is on the higher side. Its mid-high launch / mid spin profile and stable / control-oriented character make it best suited to medium-fast or 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 LIN-Q Powercore HY 90 .370" X-Stiff · Hybrid Shaft
Material: GraphiteFlex: X-StiffWeight class: Heavy (85-99.9 g)Flight: Mid-high launch / Mid spinTip: Parallel tip
3.17 ozWeight
3.4°Torque
X-StiffFlex
Mid-HighLaunch
Hybrid-shaft benchmarks
How this shaft compares
Numeric comparisons use hybrid shafts in this database.
Weight
Above average
3.17 oz
Weight is above average among hybrid shafts in this database.
Torque
Above average
3.4°
Torque is above average among hybrid shafts in this database.
At a glance
Shaft profile
LaunchMid-High
StabilityStable / control-oriented
Tempo fitBest suited to medium-fast or fast tempos
TipParallel tip
Utility fitGood hybrid / utility crossover fit
Overview
Model information
| Manufacturer | UST Mamiya |
|---|---|
| Model | UST LIN-Q Powercore HY 90 .370" X-Stiff |
| Category | Hybrid Shaft |
| Catalog year | 2026 |
| SKU / code | US0154 |
| MPF rating | 5B2M |
Full specifications
Technical details
Weight & flex
Weight3.17 oz (90 g)
Weight classHeavy (85-99.9 g)
FlexX-Stiff
Torque3.4°
Bend pointmid
Kick pointMid
Tip stiffnessmedium
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 profileStable / control-oriented
Launch assistanceModerate launch assistance
Feel profileVibration-damping graphite feel, stable through impact
Relative weight positionAbove average among hybrid shafts
Relative torque positionAbove average among hybrid shafts
Player fit
Tempo fitBest suited to medium-fast or fast tempos
Transition fitHandles aggressive transitions well
Control vs speed biasSlightly speed biased
Fairway / rough playabilityGood launch help from fairway / rough
Utility-iron suitabilityGood hybrid / utility crossover fit
Likely swing-speed fitFaster hybrid swings / stronger players
Golfer fit summarySlightly speed biased; best suited to medium-fast or 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 LIN-Q PowerCore Hybrid
Family positionHeaviest family option; firmest listed flex; higher-flight role
Family comparisonIt sits the heaviest option in the family and on the lower-torque side of the family. It is heavier than UST LIN-Q Powercore HY 90 .370" S.
Why choose this variantChoose this firmer family variant for faster or more aggressive transitions that need less shaft movement.