Equipment
Three Callaway GBB Epic drivers appear on USGA Conforming Club List
Three new Callaway drivers have appeared on the USGA’s Conforming Club List: the GBB Epic, the GBB Epic Star and the GBB Epic Sub Zero.
Callaway isn’t commenting on the new Great Big Bertha (GBB) drivers at this time, so we can’t officially confirm or deny any details about the new drivers. We do anticipate that one or more of the driver models could be in play this week at the Hero World Challenge in the Bahamas, however, where they will be permitted for us. We also can point out a few things based on the USGA’s black-and-white photos.
GBB Epic
GBB Epic Star
Based on the photos, it appears the GBB Epic and GBB Epic Star are virtually identical, with the exception being the lack of an adjustable hosel on the GBB Epic Star.
Both drivers appear to use a technology called “Jailbreak,” which is highlighted on the front of the driver’s sole. The technology is rumored to connect the sole and crown of the drivers, adding reinforcement that improves energy transfer.
On the other end of the sole is a sliding weight that enables golfers to select a draw, fade or neutral trajectory bias. There are also what seem to be carbon fiber inserts on the soles of all three driver models. Carbon fiber is lighter than titanium, and its use presumably enhanced the ability of Callaway engineers to optimize the weighting of the driver heads for improved performance.
GBB Epic Sub Zero
Instead of a sliding weight track, the GBB Epic Sub Zero has two adjustable weights — one on the front of the sole, and one on the back. That reminds us of Callaway’s XR ’16 Sub Zero driver, which is the company’s current ultra-low-spin driver. It design targets better golfers, and was used in 2016 by Phil Mickelson.
The Sub Zero got its name from its center of gravity position (CG), which Callaway says is below the neutral axis line, or “sub zero.” The XR ’16 Sub Zero uses a what Callaway called a Carbon Triax Crown, an extremely thin, lightweight composite material on the top of the driver that the company said enabled its sub zero CG location.
What are GolfWRX Members saying about the new drivers? Join the discussion in our forum.
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Whats in the Bag
Webb Simpson WITB 2024 (May)
- Webb Simpson what’s in the bag accurate as of the Wells Fargo Championship. More photos from the event here.
Driver: Titleist TSR3 (10 degrees, A1 SureFit setting)
Shaft: Fujikura Ventus TR Black 6 X
3-wood: Titleist TS2 (15 degrees, B2 SureFit setting)
Shaft: Mitsubishi Tensei CK Blue 70 TX
5-wood: Titleist 913 Fd (18 degrees)
Shaft: UST Mamiya VTS Proforce 8 TX
Hybrids: Titleist TSR2 (24 degrees)
Shaft: Graphite Design Tour AD D1 Hybrid 105 X
Irons: Titleist T150 (5, 6), Titleist 680 (7-PW)
Shafts: True Temper Dynamic Gold Tour Issue X100
Wedges: Titleist Vokey Design SM9 (46-10F, 54-14F, 60-04L)
Shafts: True Temper Dynamic Gold Tour Issue X100 (46), True Temper Dynamic Gold Tour Issue S400
Putter: Odyssey Ai-One Jailbird Cruiser
Ball: Titleist Pro V1
Grips: Golf Pride Tour Velvet
Check out more in-hand photos of Webb Simpson’s clubs here.
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Whats in the Bag
Keegan Bradley WITB 2024 (May)
- Keegan Bradley’s WITB accurate as of the Wells Fargo Championship. >14 clubs pictured. Obviously, Bradley will reduce that number to 14 for competition. Check out more photos from the tournament here.
Driver: Ping G430 LST (10.5 degrees)
Shaft: Fujikura Ventus Black 6 X
3-wood: TaylorMade Qi10 (16.5 degrees)
Shaft: Aldila Rogue White 130 MSI 70 TX
Hybrid: Callaway Apex UW (19 degrees)
Shaft: Project X HZRDUS Smoke Black RDX 80 TX
Irons: Srixon ZX5 Mk II (3-5) Srixon ZX7 Mk II (6-PW)
Shafts: True Temper Dynamic Gold Tour Issue X100
Wedges: Cleveland RTX ZipCore (52-10 Mid, 58-6 Low)
Shafts: True Temper Dynamic Gold Tour Issue S400
Putter: Odyssey Ai-One Jailbird Cruiser
Grip: SuperStroke Zenergy WristLock
Grips: Golf Pride Tour Velvet Plus4
Ball: Srixon Z-Star Diamond
Check out more in-hand photos of Bradley’s clubs here.
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Equipment
Coolest thing for sale in the GolfWRX Classifieds (5/7/24): Mizuno 245 irons
At GolfWRX, we are a community of like-minded individuals that all experience and express our enjoyment of the game in many ways.
It’s that sense of community that drives day-to-day interactions in the forums on topics that range from best driver to what marker you use to mark your ball. It even allows us to share another thing we all love – buying and selling equipment.
Currently, in our GolfWRX buy/sell/trade (BST) forum, there is a listing for a set of Mizuno 245 irons.
From the seller: (@JB_007): “1. Mizuno Pro 245 – $1000 –> 950/obo
- Purchased brand new – they have 36 holes on them, with probably 10 premium range balls. Great set of irons, I just am looking to go another way right now.
- 5-PW –> stock L/L/L
- Project X LS 6.5
- Stock MCC Mizuno Grips.”
To check out the full listing in our BST forum, head through the link: Mizuno 245 irons
This is the most impressive current listing from the GolfWRX BST, and if you are curious about the rules to participate in the BST Forum you can check them out here: GolfWRX BST Rules
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westphi
Dec 4, 2016 at 12:56 pm
When is this going to be released in stores?
Red Regal
Nov 29, 2016 at 6:42 am
Callaway the new Taylor Made with so many releases.
PapaBear
Nov 29, 2016 at 2:46 am
Haven’t been this excited since the Cobra 370U was released!
KJ
Nov 28, 2016 at 9:02 pm
A lot of the comments, so true. I buy a new driver amount every 3 years. I typically buy a model that’s one year old and half the price of the original in very good shape.
erlybrd
Nov 28, 2016 at 6:27 pm
What? Looks just like 915 D4 head!!
Blade Junkie
Nov 28, 2016 at 3:31 pm
Another bottle of Snake Oil please Bartender !
B. Parsons
Nov 28, 2016 at 1:16 pm
The Korean YouTube video showed these in detail. I’m sure cally will try their best to have it pulled, but it’s still out there. Search for it on naver or another Korean search engine.
Dave R
Nov 28, 2016 at 12:21 pm
What I can’t believe it more new drivers, what will they think of next
Jordan
Nov 28, 2016 at 11:14 am
Wait, they’re coming out with an adjustable 915 driver? Color me intrigued…
Guy
Nov 28, 2016 at 11:49 am
Thats what I was thinking when I saw it.
Clay
Nov 28, 2016 at 10:30 am
I can’t believe no one has speculated that the bonded hosel design was made for Tiger. Are the “Tiger is buying TM” rumors so strong that no one wants to start a new rumor about Tiger signing with Callaway? Fine, I will start the rumor. The GBB Star is made specifically for Tiger and will not go to market. I have zero evidence but I know some people that know some people that robbed some people and they said it is true.
Michael
Nov 28, 2016 at 9:33 am
The Epic Star has my attention. Will this be a non-adjustable model that is in the $399 range? Would they want to compete with possible Fusion sales?
cgasucks
Nov 28, 2016 at 9:04 am
Jailbreak technology!??! What is that?? Does it mean if you pay someone to “unlock” it you remove the USGA COR restriction!??!
Desmond
Nov 28, 2016 at 9:23 am
You need to read the EPIC thread
Desmond
Nov 28, 2016 at 9:24 am
… or just the descriptions above. Works wonders.
Fozzie Bear
Nov 28, 2016 at 8:50 am
Oh, Mizuno Fast Track is back. 🙂
DB
Dec 2, 2016 at 12:49 am
Man, I just saw a Mizzy Fast Track at GolfMart for like $30.
If Callaway says this technology is a game changer then I’m going back to get that Mizuno tonight!