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TaylorMade’s new M3 and M4 irons, with “RibCOR” technology

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With its new M3 and M4 irons, TaylorMade has introduced a “RibCOR” technology that’s designed to produce more speed on mishits. Before we get into what exactly that design is, let’s see why this concept is important.

COR, or coefficient of restitution, is the measure of energy transfer between two objects. For golf club manufacturers, especially when making game-improvement irons, the goal is to get COR as high as possible; this means ensuring as much energy gets transferred from the club face to the golf ball as possible during impact. Of course, the USGA sets a limit on COR of golf clubs so they can only go so far.

Many companies these days have figured out how to maximize COR on the center of the club face. Now, the game for engineers across the industry has become “how high can we make COR on shots hit off-center.” The goal obviously being to produce as much speed on off-center hits as possible, or, minimizing energy loss at impact.

TaylorMade, for its new M3 and M4 irons, has introduced RibCOR technology that uses two ribs, or beams, on the outer portions of the heel and toe as pictured below.

This provides internal support on the outer portions of the club so that the face can flex as much as possible at impact, thus retaining energy transfer from the club the golf ball. So while the center of the face may not produce more speed compared to its M1 and M2 predecessors, this design should impart more ball speed across the face. That means more forgiveness, or MOI (moment of inertia).

The RibCOR design couples with a number of familiar technologies from the company’s past including inverted cone technology, speed pockets and face slots. These are all designed for to produce higher ball speeds and more forgiveness, helping golfers who don’t hit the center of the face every time to launch the ball high and far.

As with the M1 and M2 irons they replace, the lower-numbered M3 iron has a more compact look and is designed for slightly better players, whereas the higher-numbered M4 iron is built for more distance and forgiveness, and has a larger head profile.

For more photos and discussion click here, or read below for more info on each of the offerings. Both the M3 and M4 irons will be available at retail on February 16.

Taylormade M4 irons

As the more forgiving of the two M-family offerings, TaylorMade’s M4 irons have fluted hosels, 1mm toplines, and what TaylorMade calls its “thinnest ever leading edge.” Also, along with the RibCOR technology that’s in both the M3 and M4 irons, additional mass has been placed on the toe and heel portions of the M4 irons to produce great forgiveness on off-center hits.

Overall, the M4 club heads have 24 percent higher MOI than the M2 2017 heads, according to TaylorMade, so golfers will find them to be more forgiving than their predecessors.

The M4 irons (4-LW) will come stock with either KBS Max 85 steel shafts (R and S flex), Fujikura Atmos shafts (5A, 6R, 7S), or additional custom shafts, with TM Dual Feel grips. Steel will sell for $899 per set, while graphite will sell for $999.

Taylormade M3 irons

The TaylorMade M3 irons, while housing some of the same technologies as the M4 irons, are made for those players who want a more compact shape and are looking for more trajectory control. To help achieve this look without sacrificing much by way of forgiveness, TaylorMade ha added a 15-gram tungsten weight to the soles of the M3 irons; this lowers CG in the head.

The irons have a 180-degree fluted hosel — that means it’s not as visible at address compared to the 360-degree fluted hosel in the M4 irons — to help move weight away from the heel. The irons have a thinner topline than the M1 irons they replace, according to TaylorMade, and have soles designed with more bounce for better turf interaction.

M3 sets (3-SW) come stock with either True Temper XP100 steel shafts (R300, S300), Mitsubishi’s Tensei graphite shafts (70R or 80S), or additional custom shafts, and with Lamkin UTx NC grips. M3 irons will sell for $999 with steel shafts or $1199 with graphite.

Click here for more photos and discussion on the M3 and M4 irons

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Andrew Tursky is the Editor-in-Chief of GolfWRX. He played on the Hawaii Pacific University Men's Golf team and earned a Masters degree in Communications. He also played college golf at Rutgers University, where he graduated with a Bachelor of Arts in Journalism.

5 Comments

5 Comments

  1. S

    Jan 9, 2018 at 12:26 pm

    I can see why pros are leaving TM…

    • ran

      Jan 30, 2018 at 10:11 am

      Wonder if the M3 and M4 have the same face caving issue that the M1/M2 irons have…..many people reporting face cave on irons….TM just replaces them with same iroins that eventually cave again.

  2. Tom Newsted

    Jan 3, 2018 at 10:52 am

    RIBCORE they stole that from their time with Addidas. That has been on a hockey stick for years. its a gimmick.

  3. mel

    Jan 2, 2018 at 8:32 pm

    TM M3 and M4 state-of-the-art iron designs look like winners to me, and leaving behind all those offering gel-filled hollow irons …. opps that means the P790 are obsolete now …lol … that was fast … lolol

  4. George

    Jan 2, 2018 at 12:33 pm

    i need me some ribcor

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pga tour

Joaquin Niemann WITB 2018

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Equipment is accurate as of the 2018 Valero Texas Open (4/16/2018).

Driver: Ping G400 LST (10 degrees)
Shaft: Graphite Design Tour AD DI-7x

3 Wood: Ping G400 (14.5 degrees)
Shaft: Graphite Design Tour AD DI-7x

Hybrid: Ping G400 (19 degrees)
Shaft: Graphite Design Tour AD DI-95x Hybrid

Irons: Ping iBlade (4-9)
Shaft: Project X 6.0

Wedges: Ping Glide 2.0 (46-12SS, 52-12SS, 56-12SS, 60-06TS)
Shaft: Project X 6.5

Putter: Ping Anser 2
Grip: Ping Pistol

Golf Ball: Titleist Pro V1x

Discussion: See what GolfWRX members are saying about Niemann’s clubs.

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pga tour

Zach Cabra WITB 2018

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Equipment is accurate as of the 2018 Houston Open (3/27/2018).

Driver: Callaway GBB Epic Sub Zero (10.5 degrees)
Shaft: Aldila Rogue Max 75X

3 Wood: Titleist 917F3 (15 degrees)
Shaft: Mitsubishi Diamana White d+ 80X

Irons: Mizuno MP-Fli-Hi (2, 3), Piretti Limited Edition (4-PW)
Shaft: Aerotech SteelFiber hls880 (2), Aerotech SteelFiber i80 (3-PW)

Wedges: Callaway MD3 Milled (50-10S, 54-10S), Callaway Mack Daddy PM (60-10)
Shaft: KBS Tour 125 S+

Putter: Piretti 801 CU
Grip: Piretti Pistol

WITB Notes: We spotted Cabra with 15 clubs in the bag ahead of the 2018 Houston Open. We’ll update this post when we confirm the 14 clubs we used in competition.

Discussion: See what GolfWRX members are saying about Cabra’s clubs.

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Equipment

TaylorMade is releasing its TP Black Copper putters to retail

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We first spotted TaylorMade’s new TP Black Copper putters at the 2018 PGA Show, but the company wasn’t saying anything about specs, release date, pricing, technologies, nothing.

Then, we all saw Rory McIlroy switch to a TaylorMade TP Black Copper Soto proto putter ahead of the 2018 Arnold Palmer Invitational, which he won by 3 strokes. Of course, Rory’s specific Soto putter was made with a special insert. Click here for all of the info and specs on Rory’s putter.

Now, TaylorMade is releasing retail versions to the public in four models — Juno, Soto, Ardmore 3 and Mullen 2 — which will hit stores on 4/20 selling for $199 with a standard Black Lamkin Crossbone Pistol grip, and $219 with a SuperStroke Pistol 1.0 GT grip.

The putters have a triple-plated finish; nickel, then copper, then black chrome, according to TaylorMade’s Bill Price (Senior Director of Product Creation for Wedges and Putters). They’re then hand-polished to achieve the antique and non-glare finish. Overtime, and especially on the sole, Price says the copper will tarnish or oxidize to unveil a gradually more antique and rustic look. Rory McIlroy himself actually had a hand in inspiring the new finish.

“Rory was talking about certain finishes,” Price said. “He wanted something non-glare, with an antique type finish…. he wanted to be reminded of something old school.” 

Thus, the TP Black Copper finish was born.

Also, the putters are machined from 303 stainless steel, they have adjustable sole weights and have the company’s familiar Pure Roll inserts in their faces. Check out more info about each of TaylorMade’s TP Black Copper models below.

Juno

  • Hosel: #1 L-Neck
  • Dexterity: RH/LH
  • Toe Hang: 36 degrees
  • Offset: Full shaft
  • Length: 34 and 35 inches
  • Head Weight: 346 grams
  • Loft: 3.5 degrees
  • Lie Angle: 70 degrees

Soto

  • Hosel: Long Curve
  • Dexterity: RH
  • Toe Hang: 47 degrees
  • Offset: Full shaft
  • Length: 34 and 35 inches
  • Head Weight: 346 grams
  • Loft: 3.5 degrees
  • Lie Angle: 70 degrees

Ardmore 3

  • Hosel: #1 L-Neck
  • Dexterity: RH/LH
  • Toe Hang: 12 degrees
  • Offset: Full shaft
  • Length: 34 and 35 inches
  • Head Weight: 350 grams
  • Loft: 3.5 degrees
  • Lie Angle: 70 degrees

Mullen 3

  • Hosel: Double Bend
  • Dexterity: RH/LH
  • Toe Hang: Face Balanced
  • Offset: 3/4 shaft
  • Length: 34 and 35 inches
  • Head Weight: 355 grams
  • Loft: 3.5 degrees
  • Lie Angle: 70 degrees
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