The UST Mamiya Recoil Dart 65 .370 F4-S is lighter than average for graphite iron shafts at 2.4 oz (68 g), while its 4.9° torque is on the higher side. Its mid launch / mid spin flight profile and responsive / higher-torque character make it friendly to smooth or moderate tempos.
Iron shaft specifications
UST Mamiya · Recoil Dart 65 .370 F4-S · Iron Shaft
Material: GraphiteFlex: F4-SWeight class: Lightweight (60-79.9 g)Flight: Mid launch / Mid spinTip: Parallel tip
2.4 ozWeight
4.9°Torque
F4-SFlex
MidLaunch
Material-matched benchmarks
How this shaft compares
Numeric comparisons use graphite iron shafts in this database.
Weight
Below average
2.4 oz
Weight is below average among graphite iron shafts in this database.
Torque
Very high
4.9°
Torque is very high 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
StabilityResponsive / higher-torque
Tempo fitFriendly to smooth or moderate tempos
Overview
Model information
| Manufacturer | UST Mamiya |
|---|---|
| Model | Recoil Dart 65 .370 F4-S |
| Category | Iron Shaft |
| Catalog year | 2026 |
| SKU / code | US0124 |
| MPF rating | 4B2M |
Full specifications
Technical details
Weight & flex
Weight2.4 oz (68 g)
Weight classLightweight (60-79.9 g)
FlexF4-S
Torque4.9°
Bend pointlow
Kick pointLow / tip
Tip stiffnessmedium
Tip flexmedium
Butt flexmedium
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; trim to club
Parallel tip lengthN/A — taper-tip design
Club rangeIrons, typically 3i-PW (trimmed from parallel blank)
FinishPainted composite / graphite finish (varies by model) (family-based) (family-based)
Flight & feel
LaunchMid
SpinMid
Trajectory / spin profileMid launch / Mid spin
Stability profileResponsive / higher-torque
Launch assistanceNeutral launch assistance
Feel profileVibration-damping graphite feel, more responsive loading, light in the hands
Relative weight positionBelow average for graphite iron shafts
Relative torque positionVery high for graphite iron shafts
Player fit
Tempo fitFriendly to smooth or moderate tempos
Transition fitBest with smooth-to-moderate transitions
Control vs speed biasSpeed / ease-of-swing biased
Long-iron playabilityGood long-iron playability
Short-iron controlBalanced short-iron feel and control
Likely swing-speed fitModerate iron swings
Target playerModerate swing speeds seeking lighter weight with balanced launch and control
Golfer fit summarySpeed / ease-of-swing biased; friendly to smooth or moderate tempos; mid launch / mid spin.