The UST Mamiya ProForce V2 55 F4-S wood shaft weighs 2.01 oz (57 g) with 3.7° torque and is tuned for a mid launch / mid spin flight. In the wider lineup, it sits at the lighter side of its weight range and the highest-torque end. Choose this variant when stability, control and a more substantial feel matter more than easy speed.
Wood shaft specifications
UST Mamiya · ProForce V2 55 F4-S · Wood Shaft
Material: GraphiteFlex: F4-SWeight class: Mid-light (55-64.9 g)Flight: Mid launch / Mid spinUse: Driver / fairway wood
2.01 ozWeight
3.7°Torque
F4-SFlex
midLaunch
Wood-shaft benchmarks
How this shaft compares
Numeric comparisons use wood shafts in this database.
Weight
Below average
2.01 oz
Weight is below average among wood shafts in this database.
Torque
Typical
3.7°
Torque is typical among wood shafts in this database.
At a glance
Shaft profile
Launchmid
StabilityStable / control-oriented
TempoBroad smooth-to-medium tempo fit
UseDriver / fairway wood
BiasSlightly speed biased
Overview
Model information
| Manufacturer | UST Mamiya |
|---|---|
| Model | ProForce V2 55 F4-S |
| Category | Wood Shaft |
| Primary use | Driver / fairway wood |
| Catalog year | 2026 |
| SKU / code | US0139 |
| MPF rating | 4B2M |
Full specifications
Technical details
Weight & flex
Weight2.01 oz (57 g)
Weight classMid-light (55-64.9 g)
FlexF4-S
Torque3.7°
Bend pointmid
Kick pointMid
Tip stiffnessmedium
Build & dimensions
MaterialGraphite
Tip diameter0.335 in (8.5 mm)
Driver tip trim0 in
Flight & feel
Launchmid
Trajectory / spinMid launch / Mid spin
StabilityStable / control-oriented
Launch assistanceNeutral launch
FeelStable graphite feel with controlled loading
Relative weightBelow average among wood shafts
Relative torqueTypical among wood shafts
Player fit
Tempo fitBroad smooth-to-medium tempo fit
Transition fitSmooth to moderate transitions
Speed vs controlSlightly speed biased
Driver playabilityStable driver profile
Fairway-wood playabilityStrong fairway-wood crossover
Golfer fit summarySlightly speed biased; broad smooth-to-medium tempo fit; mid launch / mid spin.
Related variants
How this version fits the lineup
Sibling comparisons use models from the same product line in this database.
Variant context
Product lineUST Mamiya ProForce V2
Position in lineuplighter side; firmest listed flex; mid launch / mid spin
Closest-version comparisonThis version sits at the lighter side of the range and on the highest-torque end. It is heavier than ProForce V2 55 F3-R and lighter than ProForce V2 65 F3-R.
Why choose this variantChoose this variant when stability, control and a more substantial feel matter more than easy speed.