PING G440 Sleeve with CRAZY STF Synergy Thrust Carbon Shaft 50 60 70 Made in Japan

The CRAZY STF SYNERGY THRUST is a high-performance shaft exclusively for fairway woods, embodying two concepts: "synergy," which is the fusion of multiple forces, and "thrust," which powerfully propels the ball.

Its configuration caters to a wide range of golfers, from a 50g range mid-low kick point model to a 70g range mid-kick point hard specification. The shaft's rigidity and torque balance have been meticulously adjusted to achieve both flexibility and excellent repulsion. The STF50 is ideal for mid-head speed golfers seeking a smooth swing, while the STF60/70 is perfect for competitive players who prioritize impact strength and operability.

All products are manufactured in Japan, ensuring reliable quality supported by sophisticated manufacturing techniques. It delivers both high launch and long distance, while also producing stable shots from the fairway. Golfers who struggle with their woods or frequently mishit the ball will particularly appreciate how the club's performance assists their swing.

It's CRAZY's latest shaft for fairway woods, and its perfection will astound you once you try it.

＜Specifications＞

STF Series (Fairway Wood Specific Carbon Shaft)

・Length: 44 inches

・Tip Diameter: 8.5mm (.335)

・Made in Japan

▶ STF50《Mid-Low Kick Point・Lightweight Model》

R (54g / Torque 3.5)

SR (54g / 3.5)

S (55g / 3.4)

SX (55g / 3.4)

Fast snapback, high launch, and excellent capture.

Lightweight and easy to swing through.

▶ STF60《Mid Kick Point・Standard Model》

S (66g / 3.6)

SX (66g / 3.5)

X (67g / 3.5)

XX (68g / 3.5)

3X (68g / 3.4)

Well-balanced mid-kick point design.

Ideal for intermediate to advanced players seeking both distance and accuracy.

▶ STF70《Mid Kick Point・For Hard Hitters》

SX (73g / 2.6)

X (74g / 2.5)

XX (74g / 2.5)

3X (75g / 2.5)

Rigidity and low torque prevent wobbling even when hitting hard.

Best match for players with high head speeds.

🛠 Common Features of the Series

・FW specific design for optimal balance for each club number

・High-precision quality made in Japan

・Covers 50g to 70g to suit play style and physical strength

➡ Covers all FW shots, from light operability to powerful heavy hitters!

The best shaft for your swing is here.

＜Points＞

Shaft only not available. For reshafting only.

Taylormade

PING G430 G425 G410

PING 2025 G440

COBRA DARKSPEED

COBRA 2025 DS-ADAPT

Srixon 2024 Zxi

CRAZY Shaft

CRAZY STF

SYNERGY THRUST

SYNERGY THRUST

Fairway Wood Shaft

FW specific shaft

Golf Carbon Shaft

Shaft resistant to mistakes

Lightweight High Launch Shaft

Made in Japan Golf Shaft

Mid Kick Point Shaft

Mid-Low Kick Point Shaft

50g range Shaft

60g range Shaft

70g range Shaft

Draw type Shaft

Accuracy enhancing Shaft

Shaft Stability

Shaft for slice correction

Shaft for 40s golfers

For average swing speed

Distance enhancing Shaft

Competitive Golf FW specific

Fairway Accuracy Improvement