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Aerotech Steelfiber Black Label Private Reserve (Parallel)Current

2017–present · Composite iron shaft · 64–110g · torque 1.9–4.9°

Maker specifications

Maker specifications for the Aerotech Steelfiber Black Label Private Reserve (Parallel), flex by flex
FlexWeightTorqueTipButtLength
60g Amateur64g4.9°0.37"0.6"41"
60g Regular64g4.8°0.37"0.6"41"
70g Amateur74g3.5°0.37"0.6"41"
70g Regular74g3.5°0.37"0.6"41"
80g Regular85g3°0.37"0.6"42"
80g Stiff85g2.9°0.37"0.6"42"
95g Regular95g2.5°0.37"0.6"41"
95g Stiff95g2.4°0.37"0.6"41"
110g Regular110g2.1°0.37"0.6"41"
110g Stiff110g1.9°0.37"0.6"41"
110g Xstiff110g1.9°0.37"0.6"41"
Build
Composite iron shaft, SteelFiber family
Sources
Published specifications and model history via truetemper.com (medium confidence on the launch year)

Weight by flex

Aerotech Steelfiber Black Label Private Reserve (Parallel) weight by flex: 60g Amateur 64g, 60g Regular 64g, 70g Amateur 74g, 70g Regular 74g, 80g Regular 85g, 80g Stiff 85g, 95g Regular 95g, 95g Stiff 95g, 110g Regular 110g, 110g Stiff 110g, 110g Xstiff 110g0g40g80g120g6460g Amateur4.9°6460g Regular4.8°7470g Amateur3.5°7470g Regular3.5°8580g Regular3°8580g Stiff2.9°9595g Regular2.5°9595g Stiff2.4°110110g Regular2.1°110110g Stiff1.9°110110g Xstiff1.9°
Raw weight for each flex the maker lists, with torque underneath.

Thinking about this shaft?

Bring your club by and we’ll measure what you play now against this sheet, then build a test club so you can hit the two side by side before anything gets pulled. Numbers here are raw, uncut, as the maker publishes them.