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SMT 3391 Irons

SMT 3391 Irons

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SMT 3391 Irons

$299.94

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DESCRIPTION

Details

Modern distance technology built for consistency.

The SMT 3391 Irons are designed to deliver enhanced distance and game-improvement performance throughout the entire set.

An ultra-thin 17-4 stainless steel face is engineered to maximize face flex and ball speed across the hitting area. With variable face thickness ranging from 2.3 mm to 2.9 mm, each iron is designed to push performance while maintaining reliable, predictable results.

Launch, stability, and improved feel across the face.

An ultra-low center of gravity promotes an easy mid-to-high launch with controlled spin, helping golfers achieve consistent carry distances throughout the set. Dual rear weighting increases moment of inertia for added stability and improved accuracy on off-center strikes.

Multi-material construction for sound and feedback.

Dual TPE inserts positioned in the rear of the head help dampen unwanted vibration while enhancing sound and feel at impact. A brushed finish reduces glare and maintains a clean, confidence-inspiring look at address.

The SMT 3391 Irons are built for golfers seeking added distance, forgiveness, and modern performance without sacrificing feel.

Key Features

Ultra-thin 17-4 stainless steel face for increased ball speed
Variable face thickness maximizes performance across the face
Deep, low center of gravity promotes easy launch and forgiveness
Dual rear weights enhance MOI and shot stability
Dual TPE inserts improve sound and reduce unwanted vibration
Brushed finish minimizes glare at address

Specifications
Head Number	4	5	6	7	8	9	PW	AW	SW
Loft	20.5	23	26	29.5	33.5	38	43	48.5	54
Lie	61	61.75	62.5	63	63.5	64	64.5	64.5	64.5
Offset (mm)	6.3	5.8	5.5	4.7	4.2	3.5	3	2.6	1.8
Head Weight (g)	249.5	255.5	262	268	276	284.5	291.5	294.5	298
Length (Steel)	38.5"	38"	37.5"	37"	36.5"	36"	35.5"	35.5"	35.5"
Length (Graphite)	39"	38.5"	38"	37.5"	37"	36.5"	36"	36"	36"

Body Material	17-4 Stainless Steel
Hosel Diameter	370 Parallel
Face Height (middle of 5 iron)mm	42
Hosel Depth (mm)	32
Finish	Brushed Polish

REVIEWS

Customer Reviews 6 item(s)

Iron set: Very happy with the process of ordering the clubs. I am a taller golfer (6’4”) and it was easy to get clubs that are long enough. I have only used them at the driving range, but am very happy/comfortable with the clubs to date

Playability

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Feel

Review by Anonymous / (Posted on 2/11/2026)
Custom built irons at a remarkable price.: I recently ordered a set of the SMT 3391 irons. Such an easy process and they are custom built to my specifications. Now in my 60's, I've lost some swing speed and flexibility and was looking for a set of game improvement irons with graphite senior flex shafts. These arrived in just a few days, and I've had them out on the driving range twice. So far, I could not be happier! High launch, very forgiving, and noticeable distance improvement. Less than half the price of the Taylor Made Sim 2, and Wilson D9 irons I was looking at. I would highly recommend these irons if you're shopping around!

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Price/Value

Feel

Review by Anonymous / (Posted on 2/11/2026)
GREAT IRONS: Do not overlook the products from this company. The quality is way above what is pictured. I received them yesterday and played a course today that I played last week and shot 5 strokes lower. I feel I will shoot even lower after getting used to these incredible irons. Use their online fit tool and you will not be disappointed with what will arrive. Thank you SMT for a quality product.

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Feel

Review by Gregory / (Posted on 2/11/2026)
Style and Forgiveness All in One!: I built these irons for a friend of mine who was looking for more forgiveness. He is for sure not saying sorry anymore. These large sole toe and heel weighted clubs are as forgiving as anything I have found on the market. They look amazing and are great for any golfer, but can inspire confidence for a beginner or high handicapper looking to have more fun on the golf course with great style over OEM budget sets.

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Feel

Review by Nicholas / (Posted on 2/11/2026)
Wow!: I assembled these with aldila nv black 85g stiff shafts and I have easily added 15-20 yards to each club in my bag! Accuracy is through the roof.

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Feel

Review by Anonymous / (Posted on 2/11/2026)
SMT 3391 irons: Great feel, good looking.

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Review by Anonymous / (Posted on 2/11/2026)

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SMT 3391 Irons

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Customer Reviews 6 item(s)

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Details

Customer Reviews 6 item(s)

Write Your Own Review

You're reviewing: SMT 3391 Irons

How do you rate this product? *

You may also be interested in the following product(s)

SMT Indio Offset Fairway Woods

SMT 465F Adjustable Fairway Woods

SMT Indio Offset Driver

SMT V3.5 Driver

SMT V3 Driver