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Steadfast JUPITER ONE PLUS Driver Shaft
Steadfast JUPITER ONE PLUS Driver Shaft

JUPITER 1 PLUS Driver Shaft

$119.00
FlexRegular
AdapterCallaway
  • Description
  • DRIVER SHAFT FLEX SPECS

The Brand New Steadfast Jupiter One Plus Driver Shaft is designed with torque and balance as the number one priority. This leads to the best feeling and most stable driver shaft on the market.

Our driver shaft head to shaft weight balance is optimized. This results in an easier swing through the ball allowing the club to lead the hands through impact. Ball carry and distance is naturally increased while getting the proper RPM. With increased weight balance and our special low torque design, we guarantee you will experience longer distance with low spin dispersion.

Additionally, when you strike the toe or heel, you’ll still find your ball in or near the fairway. You’ll still get solid distance, too, as our 3rd party test results have proven. Whether being tested by robots, pro golfers, or amateur players, the Steadfast driver shaft will deliver consistent results and is an easy switch to make with any popular clubhead manufacturer.

Steadfast Jupiter one driver shaft is an improvement to the typical graphite shaft. This shaft increases the durability, performance, and overall feel of a driver. If you are looking to drive longer and straighter this is the driver shaft for you!

STRAIGHT BALL FLIGHT : Jupiter One driver shaft is tested as the straightest driver shaft in golf with the least amount of dispersion. Hitting a straighter ball requires low shaft torque, and this driver shaft was designed with torque and balance as the number one priority.

FITS ANY BRAND : Our premium carbon driver shaft is also easy to set up and attach. They are shipped with the adapter and grip already installed by our expert club fitters.

OPTIMIZED THROUGH TESTING : Our Jupiter One driver shaft is engineered and tested individually by flex. Specifically, this driver shaft flex is a completely different formula that has been optimized with hundreds of revisions and thousands of hours in the simulator and robotic testing.

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

LADIES  - (70-74 mph) 223 cpm, 45g,45.5 in. play length

SENIOR - (70 - 89 mph) 227cpm, 50g, 45.5 in. play length

REGULAR - (90 - 99 mph) 241cpm, 55g,45.5 in. play length

STIFF - (100 - 109 mph) 258cpm, 58g,45.5 in. play length

X  - (110 - 129 mph) 273cpm, 61g,45.5 in. play length

Driver Shaft Flex 100 Day Satisfaction Guarantee:

You’ve got 100 days! Take your Steadfast Jupiter One Plus Driver Shaft to the range or on the course. If it doesn’t outperform your old stock driver shaft, just let us know. We’ll take it back and swap it for a new flex—no questions asked!

Even better, if your Jupiter One Plus Driver Shaft ever breaks, we will replace it. Read more...

JUPITER 1 PLUS Driver Shaft

$119.00

Customer Reviews

Based on 235 reviews
88%
(206)
12%
(28)
0%
(0)
0%
(0)
0%
(1)
W
Weston Owens
Haven't Received My Order

I ordered a stiff flex driver shaft 4 weeks ago. It took 2 weeks for the order to ship. When it finally arrived, the shaft was broken. I reached out to customer service, requesting a refund because of those two issues. They said they only do replacements. 2 weeks later, there still hasn't been a replacement sent and no communication on when I can expect to receive it.
Very disappointed in the customer service, because I was excited to try this product out on my new driver. Based on my experience, unless you're willing to wait over a month, you're better off spending your money somewhere else.

C
Craig MacArthur
No significant change in distance, but major improvement in accuracy.

I don’t see a lot of increase in distance (maybe 5-10 yards more) , but I did see improvement in consistency of hitting fairways. I also liked the feel of the shot better with this shaft.

A
ANTHONY MICU
Follow up: on course review -Driver senior shaft

I initially only hit the driver at the range and noticed a pickup in the distance and tighter dispersion. I expected the same results on the course. I probably picked up about an additional 15 yards and straighter drives. Swing easy and hit it long. This shaft is well worth the price. Fit was perfect for my Callaway Mavrik Max driver.

S
Scott McGlynn
Hard to believe

I really did not expect this shaft to make this much of a difference. I was hoping for a decent improvement, but this is more than I actually hoped for. Hitting more fairways and a gain of 15 yards was a surprise. Thank you.

J
Jerry Fizel
WOW, what a shaft

I was skeptic at first but loved the feel of shafts with low torque. So I put one in my Mizuno Driver and was shocked on my first tee, straight & long. You get great sense of what your shot is going to be through the grip before you turn and look.
I highly recommend this shafts, great quality, great price.

123

START DRIVING FURTHER AND STRAIGHTER

Steadfast's first priority is to design a driver shaft with the most effective torque and balance. Not surprisingly, this leads to the best feeling and most stable driver shaft on the market

As Featured In

PGA Tour Golfer Holding a Jupiter One Driver Shaft on His Back

Instant Driver Shaft Joy

We eliminated additional costs to offer a high-quality driver shaft at an unbeatable price. This provides optimal performance for golfers of every proficiency level.

Yes, that means you. Experience the joy of longer, straighter drives.

Club Champion Golfer Holding a Steadfast Driver Shaft In Front of Him

"Straightest Driver Shaft in Golf"

Watch Club Champions Review and Test Steadfast Superb Shafts

*Steadfast Driver Shafts*

What's the big deal?!

Our mission is not just to outperform the competition, but to dominate it.

HERE IS HOW WE DO IT

DRIVER SHAFT MADE WITH...

Premium carbon fiber

Steadfast Golf driver shaft is an improvement to the typical graphite driver shaft. Why? Carbon fiber increases the durability, performance, and overall feel. You get more value for less.

Steadfast Golf Driver Shaft With Logo Shown
Golfer Smiling as He Holds His Driver and Looks at His Steadfast Driver Shaft

Perfectly optimized

Head to shaft weight balance

This 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.

Golf Laboratories Driver Shaft Tests:

Reduced mishit dispersion by 50%

...That's 28 yards against other 'premium' expensive shafts.

In other words, if you hit it off the toe or heel, it continues to go straight for the same distance. 

Finally, ball speed increased slightly for the Steadfast driver shaft. Furthermore, backspin was better or equal to competitors.

Dispersion Graphic Showing Steadfast Driver Shaft Lower Dispersion

HERE IS WHAT GOLFERS SAY

driver shaft reviews

Real golfers share their experience with the Jupiter One Plus Driver Shaft.

Golf Clubs in a Titleist Bag On a Wood Floor
“

Black stealth look. Dispersion is much better than the stock shaft my driver came with. I've noticed increased distance and would recommend anyone to try this shaft.

”
Ray K.
Verified Customer
Golf Driver With a Steadfast Driver Shaft Looking From the Top Clubhead Down
“

Phenomenal Shaft! I have never driven the ball straighter, longer and stayed in the middle of the fairway. All my drives are going over or close to 300 yards. Keeping this secret from my buddies for this season🤣🤣

”
Lexington B.
Verified Customer
Golfer Wearing Glasses Holding a Steadfast Driver Golf Shaft and Smiling
“

I was complete shock in my first couple of shots with my driver. For the cost, great appearance & performance it is totally amazing. Great launch, very tight ball dispersion and ball length I believe has increased. I am truly considering placing a Jupiter shaft in my 3 wood. I would not hesitate to recommend the Jupiter shafts to my friends.

”
Jerry F.
Verified Customer
Mishit Dispersion Graph Showing How Steadfast Driver Shaft Reduced Mishit by 50%

numbers don't lie

HERE’S WHAT THE TESTING SHOWS…

The below data was collected using the same TaylorMade M5 driver head (set at the same loft) with three different shafts: 


- Steadfast

- Shaft A (major aftermarket shaft manufacturer)

- Shaft B (major aftermarket shaft manufacturer)

>
Head to head
Steadfast Shaft A Shaft B
Ball Speed 172 168.1 166.5
Backspin 1,813 2,420 2,689
Carry Yards 288 278 276
Total Yards 313 301 298

So...

What does this mean for me?

To summarize, the data shows that Steadfast Driver Shafts come out on top for all three metrics:

✔️ DISTANCE: 10-15 more yards of carry and total distance
because Steadfast shafts produce more ball speed and less backspin.

✔️ ACCURACY: 25% fewer mis-hits and dispersion because of Steadfast’s extremely low-torque driver shafts reduce sidespin.

✔️ CONSISTENCY: Steadfast shafts are precisely weighted and effectively “spineless,” so kick points remain consistent even when adjusting
driver heads.

Buy Now

Compliment Your Driver Shaft

Closeup Of the JUPITER ONE PLUS 3 Wood Carbon Fiber Shaft Logo

3 - Wood

Dialled in distance, accurancy and control

3-Wood
Closeup Of the JUPITER ONE PLUS 3 Wood Carbon Fiber Shaft Logo

5 - Wood

Don't compromise distance or control

5 - Wood