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AutoFlex Driver Shaft
AutoFlex Driver Shaft
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Product Details
Product Details
Revolutionize Your Game with the AutoFlex Driver Shaft
The AutoFlex Driver Shaft is unlike anything else on the market. Engineered with proprietary Korean Hidden Technology (KHT), the AutoFlex shaft loads and unloads in perfect sync with your natural swing tempo — automatically adapting to deliver maximum clubhead speed, longer distances, and exceptional accuracy without forcing you to change your swing.
Forget traditional flex ratings. AutoFlex uses its own proprietary flex system built around swing tempo and feel, making it one of the most fitting-friendly shafts available.
Key Features:
- Korean Hidden Technology (KHT): Proprietary construction that dynamically adapts to your swing, maximizing energy transfer and clubhead speed at impact
- Tempo-Based Flex System: AutoFlex uses its own flex designations based on swing tempo rather than traditional swing speed categories alone
- Ultra-Lightweight Construction: Promotes faster swing speeds and effortless power through the ball
- High Launch Profile: Designed to help golfers maximize carry distance and ball flight
- Multiple Colorways: Available in Black, Yellow, Pink, Rainbow, and Limited Edition Red & Blue — color is cosmetic only and does not affect performance
AutoFlex Driver — Flex Guide: Who It's For
| Flex | Equiv. Flex | Swing Speed | Tempo | Launch | Spin | Who It's For |
|---|---|---|---|---|---|---|
| SF305X | R2 | 75–85 mph | Smooth / Slow | High | Mid | Slower-swing players with a smooth, unhurried tempo. If you've been playing a Ladies or Senior flex and want more feel and distance without a jarring, stiff shaft, the 305X is your starting point. Great for seniors and recreational golfers. |
| SF405 | R | 80–95 mph | Moderate | High | Mid | The most versatile option — ideal for the average male recreational golfer with a smooth-to-moderate tempo. If you're looking for more distance and a more responsive feel than a traditional Regular flex, start here. |
| SF505 | S | 95–105 mph | Active / Moderate-Fast | High | Mid | Athletic players with faster swing speeds and an active tempo. A great fit for low-to-mid handicappers who want the AutoFlex feel with more stability than the 405. If you currently play a Stiff flex, this is your range. |
| SF505X | X | 105–115 mph | Aggressive | High | Mid | Strong, fast players with an aggressive transition and quick tempo. Ideal for scratch golfers and strong amateurs who generate significant clubhead speed and need a shaft that keeps up without losing the KHT energy transfer. |
| SF505XX | XX / Tour X | 115+ mph | Very Aggressive / Tour | High | Mid | Tour-level or elite amateur players with extremely fast, powerful swings. The stiffest AutoFlex option — built for players who need maximum stability and control at the highest swing speeds while retaining the adaptive feel AutoFlex is known for. |
Not sure which flex is right for you? AutoFlex fitting is based on tempo and feel — contact us and we'll help you find the right match.
Shaft Specifications:
- Tip Diameter: .335"
- Butt Diameter: ~.600"
- Launch: High
- Spin: Mid
- Weight: Ultra-lightweight (varies by flex)
Standard Driver Playing Lengths by Adapter
| Adapter Brand | Standard Playing Length |
|---|---|
| Ping G430 | 45.75" |
| Ping G440 | 45.75" |
| TaylorMade | 45.75" |
| Callaway | 45.75" |
| Mizuno | 45.75" |
| Titleist | 45.5" |
| PXG | 45.5" |
| Cobra DS Adapt | 45.5" |
Need a different length? Just let us know your preferred playing length when ordering and we'll cut it to your spec.
Why Buy From Us
With 30+ years of experience in the golf industry, we are a trusted source for premium, authentic golf equipment. We are authorized dealers for leading brands including Fujikura, AutoFlex, BGT, Graphite Design, Miura, Epon, Edel, Eben Kella, and more.
All products are 100% authentic, carefully inspected prior to shipping, and supported by applicable manufacturer warranties. We are also a top-rated eBay seller with thousands of 5-star reviews.
Due to manufacturer MAP policies, online pricing reflects standard advertised pricing. By contacting us directly, we can often discuss additional options or configurations that may provide added value.
Don't see what you're looking for? If a specific color, flex, or configuration is out of stock, please contact us — we may be able to special order it for you.
Need help finding the perfect fit? We offer a complimentary fitting consultation to help you choose the right shaft for your game. Just reach out — we're here to help!
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