Steadfast Jupiter1 Driver Shaft - Ladies Flex


Steadfast carbon fiber golf shafts are an improvement to the typical graphite shaft, increasing the durability, performance, and overall feel of any club.

Our shafts have gone through rigorous testing procedures to assure each shaft is not only made to our high standard of quality but also performs exactly the same no matter which shaft is being tested from production.

With increased weight balance and our special low torque design, we guarantee you will experience longer distance with low spin dispersion. Whether being tested by robots, pro golfers, or amatuer players, the Steadfast Shaft will deliver consistent results and is an easy switch to make with any popular clubhead manufacturer.

  • INCREASE DISTANCE Optimized head to shaft weight balance means an easier swing through the ball allowing the club to lead the hands through impact to naturally increase distance increasing ball carry while getting the proper RPM.
  • LONGEST AND STRAIGHT BALL FLIGHT Tested as the straightest shaft in golf with the least amount of dispersion. Hitting a straighter ball requires low shaft torque. The new Steadfast shaft was designed with torque and balance as the number one priority, leading to the best feeling and most stable shafts on the market.
  • REFINED GRAPHITE MADE IN THE USA Graphite shafts tend to be brittle and do not stand the test of time, Steadfast is constructed using the highest quality carbon fiber which is the pure form of graphite providing more durability and better overall feel.
  • FITS ANY BRAND Our premium carbon fiber shafts are also easy to setup and attach, simply prepare the tip and adapter then attach your existing head.
  • OPTIMIZED THROUGH TESTING Our shafts are engineered and tested individually by flex, meaning each flex is a completely different formula that has been optimized with 100’s of revisions and 1000’s of hours in the simulator and robotic testing.

To ensure the highest possible quality the adapters and grips are installed by the world-class pro tour club fitters.

Shafts and adapters are suitable for both right and left-handed golfers.


Swing speed: 70-74 mph
Frequency: 221-225 cpm
Weight: 58g


Tested as the straightest shaft in golf with the least amount of dispersion. Made in the U.S.A. from the highest quality carbon fiber.

Yup, you'll have 100 days! Take it to the range, play a few rounds, and if your Steadfast shaft doesn't outperform your old stock shaft let us know and we'll take it back and give you a refund. No questions asked!

If your shaft ever breaks just let us know and we will replace it for you.

We'll ship your shafts for free. So you won't be surprised by an extra fee on the checkout page. Domestic orders only.

Pay for your shaft in full (major credit cards and PayPal) or select shop Pay option on the payment page and pay in 4 interest-free installments. The choice is yours!

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