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TaylorMade M4 Irons Review

August 2020
TaylorMade M4 irons review

While the big talking point on the new TaylorMade M3 and M4 drivers has been TwistFace technology, the M3 and M4 irons also feature a newly launched technology known as RIBCOR.

This is designed to help you hit the ball higher, straighter and longer, which these days is the purpose of almost every new feature added to a golf club.

For the sake of clarity this review only covers the new M4 irons, which replace the popular M2 irons and feature improvements on many of the design elements found in the previous generation with the addition of the likes of RIBCOR to help you enjoy your round more, especially if you are a mid to high handicapper with a slower swingspeed.

TaylorMade M4 Irons

Our Assessment 

If it’s more distance and forgiveness you seek from your irons then the M4 irons need to be on your radar.

The many design elements carried through from previous game improvement models such as the face slots and speed pocket in the sole combine really well with the new RIBCOR technology to reduce low hooks and high slices, the most common mishits experienced by higher handicapped golfers.

It really is quite astounding just how consistently straight the ballflight produced by these irons are, with almost every shot feeling as if it was hit from the face of a wood such is the power and feel at impact.


  • Every iron produces a consistent high and straight flight with good spin rates that produce both great carry and roll.
  • The overall lightweight design of the irons helps to increase swingspeed without much extra effort.
  • The long irons are incredibly easy to hit.
  • Good value for such a highly advanced set of irons.


  • The sound and feel at impact is quite harsh for irons, however, it is consistent across the entire face and there is no unwanted vibration.
  • The loft of each iron is much lower than normal, but thankfully this doesn’t affect launch or spin.

Key Facts



Launch RRP



Mens & Women's

Handicap Range

Mid to High

Hand Availability

Right & Left 

Swing Weight

Men’s – Steel – D2-D4, Graphite D0-D3. Women’s – Graphite – C2-C5


Men’s – 19°-54° (LW – 59°). Women’s – 19°-54°


Men’s – 38.88-35”, Women’s – 37.88-34.25”

Shaft Type and Name

Men’s – Steel KBS – Max 85, Graphite – Fujikura Atmos Red. Women’s – TaylorMade Tuned 45

Manufacturer's Website

Official Video

TaylorMade M4 Irons Detailed Review

Design & Appearance

A lot has already been spoken about the design of the M4 irons and how all of these elements combine to improve distance and forgiveness.

When it comes to the looks of the M4 irons they are quite chunky with thick toplines and significant offset.

The fluted hosel is now a similar colour as the rest of the clubhead so that it isn’t as distracting as before.

The finish on the face has also been extended up onto the topline for improved alignment at address.

One thing that is certain is that these irons are not very workable and instead produce a consistent straight and high ball flight, perfect for higher handicapped golfers. And these irons are very difficult to hook or slice.

Build Quality

A lot of effort has gone into the design of the M4 irons and it reflects in the performance of these irons.

The cast steel clubhead features an incredibly thin face, just 1.5 millimetres thick, a deep cavity and a very chunky muscle pad. The fluted hosel has been carried through from the M2 irons and reduces weight in the hosel allowing for more weight to be placed lower in the clubhead.

A small notch is visible lower on the hosel near the heel of the club and this allows for the loft and lie angle of each iron head to be adjusted, something that is normally very difficult to do to a cast clubhead.

The visible RIBCOR technology in the cavity reinforces the entire clubface above the muscle pad to ensure a consistent result across the entire area.

Control & Performance

As mentioned before it’s the RIBCOR technology that is the big talking point of the M4 irons. This visible structure in the cavity really works well to create a consistent feel and performance across the entire face making mishits much less unbearable.

It’s also amazing how well this RIBCOR technology works to reduce unwanted vibrations on these mishits. The face slots and speed pockets also help to increase ball rebound speed, soften feel on mishits and reduce vibration.

Adding RIBCOR to the upper portion of the face also allows more mass to be placed lower in the clubhead. TaylorMade claims this increases the MOI of the M4 irons by up to 20 percent and also lowers the CG to help produce the high launch and lower spin.

Value for Money

Being cast irons you wouldn’t expect to fork out too much for a set of M4 irons and so the price tag is very decent.

The stock steel and graphite shafts combine well with the clubheads to ensure the overall weight of each iron is light enough to assist in increasing swingspeed without much extra effort.

About the author  Jason Mylroie

Been hooked on golf since I was 12 and lived on a golf estate while at school. Began to work in Golf Industry during university and spent a year on the Sunshine Tour as a media operator. Subsequently became deputy editor of Compleat Golfer in South Africa for 5 years, specializing in equipment and travel reviews. After that I became a consultant to a major golf chain, testing and reviewing all equipment. Also a Callaway custom fitter and play off a 2 handicap when actually getting the chance to play!

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