Pros: FLT shafts use a flighted design, which helps golfers launch their long irons higher and with more spin. The FLT short-iron shafts provide a more penetrating trajectory for more control.
Cons: FLT shaft flexes correspond with weight, so golfers may not be able to match their desired shaft weight with their desired flex.
Who They’re For: Golfers who need more spin or more launch from their long irons to optimize their trajectory. Everyone from beginners to PGA Tour players can use the shafts effectively, but they’ll be most popular with golfers with moderate-to-slow swing speeds, or any golfer who generates low-spin launch conditions.
Selecting the proper iron shafts is one of the most important equipment decisions golfers make. It’s an issue of quantity. Most golfers carry about 7-8 irons in their bag, so if they choose the wrong iron shaft, they’ve made the game harder than it needs to be with half or more of their clubs.
The good news is that there’s a wider selection of quality iron shafts than there has ever been, with recent growth in models that are designed to help golfers hit their iron shots higher and farther, while still maintaining PGA Tour-quality consistency and feel.
KBS is one of the leading steel shaft manufacturers, and already offered a wide variety of models prior to its newest shaft launch. Company representatives felt KBS was lacking a product for a particular segment of golfers, however, so it developed its new FLT shafts.
FLT shafts ($31.95 each) have a flighted design, which helps certain golfers optimize the performance of each iron their bag. The long irons shafts have progressively softer tip sections, which helps golfers increase their launch angle and spin rates with those clubs. For the right golfer, the design will help them hit their iron shots farther, and stop shots on the green more quickly. In the short irons, where height and spin are easier for golfers to generate, the FLT shafts are stiffer, which creates the flatter trajectory most golfers prefer with their scoring clubs. The crossover point between the higher-launching long irons and lower-launching short irons is the 7 iron.
Like all KBS shafts, FLT models have a constant weight, which means that long iron shafts and short iron shafts will be roughly the same weight through the set. Shaft weight is dependent on flex, however, as softer-flex models are lighter than stiffer-flex models. So if you’re looking for a really heavy, regular-flex shaft or a really light, extra-stiff-flex shaft, these aren’t for you.
Keep in mind that KBS shafts do not have reinforced tip sections like many other iron shafts, which gives them a slightly higher balance point and can decrease swing weight by 1-2 points. I personally like the feel of KBS shafts and their slightly higher balance point, but some golfers won’t.
For this review, I tested the new FLT shafts head to head against KBS Tour shafts of the same flex and weight (130X) in 4 irons, 6 irons and pitching wedges. Each of the shafts were installed in Callaway’s Apex Pro ’16 irons, and were built to my specifications (standard grips, standard length, 1-degree strong lofts, 1-degree flat lie angles).
I performed my testing at the Launch Pad at Carl’s Golfland in Bloomfield Hills, Mich., where I hit the 4 irons, 6 irons and pitching wedges on Trackman IV with premium golf balls. I hit 3-6 solid shots with each iron, and then removed the outliers from the final data in an attempt to compare only the most similar strikes. Results were normalized.
As you can see from the data, there was a significant difference in the flight of the 4 irons with the two different shafts, but less of a difference with the 6 irons and pitching wedges.
As expected, the FLT shafts caused 4 iron shots to launch higher (0.8 degrees) and with more spin (729 rpm) than the KBS Tour shafts. I’m not a low-spin player, which is one of the target audiences for this shaft, so the added launch and spin of the FLT shafts caused my 4 iron shots to fly shorter. Golfers who launch their irons too low or with too little spin, however, will likely see a distance increase when using the FLT shafts.
As I moved closer to the short end of the set, the two shafts started to perform more similarly. Theoretically, the 6 iron shots with the FLT shafts should have launched slightly higher and spun more than 6 iron shots with the KBS Tour shafts, but I actually saw a slightly lower launch angle (0.5 degrees) with the FLT. The spin was higher, though, by 211 rpm. With the pitching wedges, the results were again quite similar. The FLT launched 0.9 degrees higher, but actually spun 271 rpm less than the KBS Tour shafts.
Stepping back from the numbers, I was impressed with how similar the feel was between the KBS Tour and FLT shafts. Yes, I could feel that the FLT shafts were more active in the tip with the 4 irons, but they felt nearly the same in the 6 irons. By the time I got to the pitching wedges, the two shafts were indistinguishable. The KBS Tour is considered one of the better-feeling iron shafts currently available, so KBS’ ability to replicate that feel in the FLT will be a plus for the majority of interested golfers.
Looking more broadly, trends in shaft design tends to go hand-in-hand with trends in club head design, and the FLT shafts are no exception. Equipment manufacturers continue to strengthen the lofts of their distance irons; they have to in order balance the launch equation, as their faster ball speeds create a higher launch angle and more spin.
While the improvements to iron design have allowed golfers to hit their mid and short irons farther, many golfers continue to struggle to hit their long irons high enough or consistently enough for them to be effective. And based on my testing results, it’s clear that the FLT shafts can make long irons more playable for certain golfers, and maybe even keep long irons in a golfer’s bag that might otherwise be kicked out for higher-flying hybrids or fairway woods.
As always, I recommend that golfers get properly fit for iron shafts, which means visiting a reputable club fitter in your area. So if you’re in the market for new irons or iron shafts, you can get started by going through KBS’ Online Fit System, which upon completion lists KBS-certified dealers in your area.
TaylorMade SIM and SIM Max driver review
New for 2020, TaylorMade has launched the new SIM driver family. First the lower spinning SIM then a more forgiving higher spinning SIM Max and a SIM Max D head to help draw the ball for those that need it.
We have seen the tour players using all three of the SIM drivers.
- Keegan Bradley WITB using the SIM Max D
- Tiger Woods WITB using the SIM
- Dustin Johnson WITB using the SIM Max
The SIM, SIM Max, and SIM Max D drivers from TaylorMade feature an asymmetric sole shape as well as a redesigned Inertia Generator. The asymmetric sole shape of the drivers is designed to reduce drag while providing faster clubhead speed, with the redesigned Inertia Generator redistributing weight at the very low-and-back portion of the club in a bid to provide improved forgiveness.
The SIM Max D clubhead contains a heel-bias internal weight with a topline masking to make the clubhead look more open at address to help golfers who struggle with a right-miss.
Other features of the SIM, SIM Max, and SIM Max D drivers includes a speed injected twist face, inverted cone technology, a thru-slot speed pocket, multi-material construction and an adjustable loft sleeve.
Exclusive to the SIM driver is sliding weight technology which allows face angle and flight bias preferences of up to +/-2° loft change and up to +/-20 yards of draw-fade bias.
Here are the individual reviews from GolfWRXers’ trip to The Kingdom.
Tester: Rob “osubuckeyes691“
I’ll start by saying this. SIM is very good. It’s not a magical 30 yards like everyone is talking about here. That comes from being properly fit. But it is good, and with a proper fitting I’d be shocked if you couldn’t find at least slightly better numbers with SIM over any gamer you have.
My current set up is a Callaway Epic Flash SZ Double Diamond with a Fuji Ventus Black 6x. LOW LOW LOW combo…and I still hit it high haha. I live in the low to mid 170s ball speed with spin sometimes getting up to 2700 2800. Drives I hit well, spin around 2100. My miss is a big push slice.
But it is good, and with a proper fitting I’d be shocked if you couldn’t find at least slightly better numbers with SIM over any gamer you have. -Rob
I ended up being fit in to a SIM 9* with the new KBS Tour Driven 70 Category 5. This shaft is super interesting. It’s really hard for me to describe but it has feel, and a lot of it. Spin dropped to about 2400 on my miss right and really, that’s what I was hoping would happen. I wanted something that when I missed, wouldn’t lose me 30 yards. We put the weight in the heel and it really did help straighten out the miss. Huge advantage for me. I knew as someone who swings 120ish I wasn’t going to pick up 20 yards. I wanted to reduce my miss and that’s exactly what SIM was able to do for me. Here is a link to his post in the forums.
Tester: Will “fillwelix“
For my driver fitting, I was with Perry, who was a blast to get to work with. I started by hitting my gamer on Trackman, talking with Perry about what my misses usually are, and what I wanted to get out of the fitting.
I usually don’t have a problem with distance so I told him the biggest thing I was looking for was a tighter dispersion. I don’t have the trackman numbers yet but with my gamer, I was averaging about 110 club head speed, 160-something ball speed, 270-275 carry, 285-290 total. Launching a bit too high but spin was okay.
The thing was seriously nuclear. My club head speed bumped up only about 1 or 2 MPH, but the launch and spin were incredible, as well as ball speed. I topped out at 170 ball speed, which I had never gotten before. -Will
We tried the 10.5 SIM in a Ventus Black 6x, and he gave me a couple tips in my setup, because my AOA was something like 4 or 5 degrees up. The thing was seriously nuclear. My club head speed bumped up only about 1 or 2 MPH, but the launch and spin were incredible, as well as ball speed. I topped out at 170 ball speed, which I had never gotten before. Carrying 295-300, total of 315-320. One shot carried the fence of the driving range at The Kingdom.
Spent some time going through different shafts to see if there was an improvement, played with weights, etc. but the best numbers were with the 10.5 SIM with Ventus Black 6x and the weight all the way in the toe, because my miss is usually left. Here is a link to his post in the forums.
Tester: Nick “n_rones“
I started off with my fittings working with Joe. After some warmup we started with the drivers. Coming in I was playing a Srixon Z785 with a Hzrdus black 6.5 70 gram shaft at 45 inches.
I’m a really tough fit because I have an unusual swing and hit down on the ball heavily with every club. My AOA with the driver was between 5 and 7 down which is pretty nuts I always knew I hit down on it but not that much. I’m still waiting on the trackman date to be emailed to me but with my own driver I was somewhere in the neighborhood of 109 swing speed with a launch angle of 4 degrees and 4000 spin (Ridiculous I know right).
I was able to take it on the course with me that afternoon and hit 12-14 fairways a new record for me and ever ball was easily 15-20 yards longer than I was used to. -Nick
His main goal for me was to get launch up and spin down. The first club he handed me was the Sim 10.5 turned up to 11.25 with a Graphite design IZ 7x. Instantly my launch angle increased and spin dropped. We then went through a few other shafts like graphite design ad di 7x. We came back to the IZ and with a quick change in tee height we ended up where we wanted. We knew with my angle of attack we were never going to get me to super low spin and high launch we just wanted to get it to a manageable number.
By the end of the fit I was hitting the sim with the iz under 3k spin with a couple down at 2500 and 9 degree launch increasing my carry from the 244 range up to the 260-265 range on good swings and we neutralized my cut massively. I was fortunate enough to finish my fit while other guys were still busy so we went right into the build shop and he built me my driver on the spot and gave me a super cool kingdom exclusive headcover. I was able to take it on the course with me that afternoon and hit 12-14 fairways a new record for me and ever ball was easily 15-20 yards longer than I was used to. Most of that is me never being through a proper fitting before but a big factor was I was able to get into the sim head with high loft but it was a great spin killing head for me. Here is a link to his post in the forums.
I am one that gained a good bit of ball speed from getting fit for the SIM driver. My gamer is a Titleist 915D3 9.5* with a Rogue Silver 70X. I wasn’t fit for the driver as I just bought the parts off of the BST. I always felt that I lost yardage due to high spin. The Trackman didn’t lie as I was getting 166mph ball speed and 3000 rpm of spin on well-struck shots. Where this posed a problem was when I was off-center, the ball would be a high right spinner that would lose a lot of distance.
Where I saw great gains was in dispersion. TwistFace just flat out works. Toe shots came back to closer to center, and heal shots faded right back towards center. I also didn’t lose as much yardage. I did pick up about five mph in ball speed. There are a plethora of reasons for this gain and the resulting 20 yard gain in ball flight.
Some could attribute the gain to almost 30 feet of height in ball flight. It could also be because there was 300 less RPM, or over a degree increase in launch angle. Either way, it has proven to me that getting fit by a knowledgeable fitter is crucial. This is the first time that I have been fit for a driver. All the expectations of mine going into this fitting have been met.
The SIM is forgiving. The SIM is aerodynamically superior to what I have been playing. The SIM just flat out performs for me because it doesn’t balloon, it is forgiving on mishits with good direction and ball speed, and it reduced my spin rate. –
The sounds of the SIM line is amazing. The solid “thwack” sound it makes at contact is extremely welcoming. Gone are the days of high pitched aluminum baseball bat sounds. Now, some sounds just sound perfect to me. Johnny Wunder posted a video on Instagram of me hitting a driver, and you can hear the sound. Here is a link to his post in the forums.
WRX Spotlight: Athalonz EnVe—The best golf shoes you’ve never heard of
One of the coolest parts of being in this part of the golfing world is being able to shed light on smaller companies that typically get overshadowed by their bigger corporate brothers.
So, this post is about one of those products that is definitely competitive against top golf shoe companies, and it’s made by a company called Athalonz, which is based out west in Arizona. Typically known for its innovative baseball cleats and insole packages, Athlonz newest addition takes the patented design to the world of golf with the EnVe golf shoe.
These have started appearing on the world long drive circuit due to the amount of traction they get, allowing players to swing harder. So for the last few months, I have gotten to wear them and see if they are as good as the company claims.
Athalonz EnVe: Living up to claims
The main selling points of these shoes are focused on two things
- Design that delivers more power and stability
- Custom comfort that lasts all day
These are somewhat difficult to combine into one shoe, and though they are on the heavier side, Athlonz are completely worth it for the benefits. It is obvious that they made strides to hit each box on the list for a great shoe. The patented design has been adapted from their baseball cleat and introduces a spikeless golf shoe with a circular design that allows the player to gain traction through the golf swing. This gives a player the chance to swing harder and faster without losing their footing. They also offer insole packages that help with correct bodyweight placement to help add an extra layer of consistency.
Secondly, it’s very noticeable that there was plenty of thought given to comfort with a roomy toe and custom insoles to fit your style. Additionally, ankle padding helps to provide more stability and comfort.
On another note, they have a good sense of style with a more classic, casual take. In addition to the pictured white/brown color, there’s a black/grey colorway as well.
After multiple months of wear in all types of conditions, these shoes have performed great for me with all the traction I need and while feeling great throughout the round.
I am a person who tends to support smaller companies when I can if they make good products. Any support for them goes a long way—especially in the golf business. Since these shoes will set you back about $150, I wanted to be sure they are worth it for the money and they absolutely are. Seriously, for anyone looking to boost their shoe game and help alleviate aching feet and ankles, give these a shot.
GolfWRX Spotlight: Nikon Coolshot 20 GII and 20i GII
Every golfer should have an accurate, reliable, easy-to-use rangefinder. With the new Nikon Coolshot 20 GII and 20i GII, you get all of that and more in one of the smallest, lightest packages on the market.
Not only do you get a ton of features, but when you consider these devices start at only $199.99 for the 20 G II and then $229.99 for the 20i GII ( slope adjusted version ), you get one of the best values in a rangefinder from one of the most well-known consumer optics companies in the world.
Review: Nikon CoolShot 20 GII and 20i GII
First Target Priority and 8-Second Continuous Measurement: “First Target Priority” is Nikon’s way of making sure you are picking up the flag and not a tree behind your intended target. There is nothing worse than thinking you have your distance dialed in to then have a shot fly over the green. With how quickly it lets you know the ranger finder is locked, getting that distance and double-checking can happen remarkably fast.
In the eight-second continuous measurement setting, the rangefinder will continuously measure the field of view as you scan the target area for approximately eight seconds. This setting is great when playing unfamiliar courses or trying to figure out the exact spot to a dogleg, tree, or hazard on your intended line.
Bright, 6x Monocular: Nikon is known for its glass and multi-coating technology, from telephoto camera lenses to rifle scopes, if it’s Nikon glass, it’s going to be clear, fog-resistant, and high-contrast for easy viewing. From a viewing experience perspective, the Coolshot 20 GII’s 6x monocular has an adjustable diopter for sharp focusing, along with long eye relief—meaning you can keep your glasses (or sunglasses) on when acquiring your target.
Slope-Adjusting ID Technology: With the 20i GII you have the option to get the slope-adjusted distance for any shot thanks to Nikon’s ID Technology. The mode can be turned on and off by the user to comply with USGA rules to make it legal for tournament rounds. Having tested it out on hilly terrain it’s easy to see why so many golfers mis-club going into greens when elevation changes become a lot more dramatic.
The Nikon Coolshot 20 GII’s size and weight make it ideal for anyone who regularly carries and wants the benefit of knowing distances but without having to worry about weight—it weighs about the same as a sleeve of balls.
The size allows you to hold the units stable. However, I could see for those new to the rangefinder space, it could take some time getting used to when first getting acquainted with it. The best bet for this is to take it to a range or just step outside with it on your next walk and get used to hitting targets before you take it to the course—plus it makes for a fun game to see how good you really are at estimating distances.
Overall, for the price and size, it is one of the best rangefinders on the market. Plus, with a five-year warranty, you can be assured of years of use with the Nikon CoolShot 20 GII rangefinders.
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