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Home › Guides › PRGR 01 to 04 Irons Compared

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【Oct 2026 Update】Which Forgiving Iron?Four 7-irons laid out on official numbers for loft, length, total weight and price. For forgiveness, pick the 04.

Updated: Oct 28, 2026Contains affiliate links

I average a score of 72 and play 150 rounds a year. I picked these seriously.
PRGR makes four irons: the 01, 02, 03 and 04. Their 7-iron lofts are 32, 30, 26 and 28 degrees, a spread of 2 to 6 degrees.
If I'm picking one for forgiveness, it's the 04, a cavity-back aimed at a low, deep center of gravity.

The Gear Nerd's Pick

For forgiveness, it's the PRGR 04 irons. The 7-iron is 28 degrees and 382 g total (MCI FOR PRGR S), the lightest of the four. It's an oval cavity-back aimed at a low, deep center of gravity and high moment of inertia.
On top of that, the 5-iron set is ¥126,500 with tax, the cheapest of the four. The 04 is the one where the numbers line up with what a forgiving iron needs.

Where to buy the PRGR 04 irons

PRGR 04 Irons (set of 5)

PRGR 04 Irons (set of 5) product photo (Rakuten Ichiba)Image: Rakuten Ichiba

Buying from outside Japan? Sign up free for Rakuten Global Express (Rakuten's official forwarding service) and check out with its Japan warehouse address → full guide

Ad. Links go to each store's product page ("Search ..." links go to search results). Price, shipping, stock and specs such as loft, shaft and number of clubs differ by store. Check the product page before you buy.

PRGR 04 irons product photo, with the heading: PRGR irons compared by 7-iron loft

Cover product photo: Rakuten Ichiba (ad) | PRGR 04 Irons

In this article

  1. Bottom line
  2. What makes an iron forgiving?
  3. The four PRGR 7-irons, side by side on official numbers
  4. How I picked: three yardsticks
  5. Why This Order
  6. What I like
  7. What to watch for
  8. Who it suits: if you're torn, choose by what you want
  9. Price and where to buy
  10. About the writer and sources
  11. FAQ

Bottom line

No. 1 is the 04 (7-iron 28 degrees, 382 g, ¥126,500), No. 2 the 03 (26 degrees, 400 g, ¥143,000), No. 3 the 02 (30 degrees, 417 g, ¥132,000), No. 4 the 01 (32 degrees, 417 g, ¥132,000).
One decision comes first: do you want help on mishits, or freedom to shape the shot?

What makes an iron forgiving?

A forgiving iron loses less distance and accuracy when you miss the center. Makers use roughly three levers: a lower and deeper center of gravity, a higher moment of inertia (how hard the head is to twist), and a stronger loft that makes the ball easier to launch and carry.

PRGR's 04 page names exactly these three. It uses a new oval cavity design aimed at low, deep center of gravity and high moment of inertia, and pairs strong lofts with a semi-large head for distance and forgiveness.

That said, none of the four product pages gives a moment-of-inertia number. So I compare on what the numbers do show: the construction, and the 7-iron loft, length and weight.

The four PRGR 7-irons, side by side on official numbers

This table scrolls sidewaysSwipe right →
Model7-iron loftLengthTotal weight5-club set (incl. tax)
PRGR 0132°37 in417g¥132,000
PRGR 0230°37 in417g¥132,000
PRGR 0326°37.75 in400g¥143,000
PRGR 0428°37.25 in382g¥126,500

Source: PRGR's official product pages (checked Oct 28, 2026). Length and total weight are design values with Spec Steel III (S) on the 01, 02 and 03, and MCI FOR PRGR (S) on the 04. The tax-inclusive price for the 01 and 02 is my own calculation: the official ¥120,000 before tax times 1.1.

Working out the gaps: in 7-iron loft, the 01 and 03 differ by 6 degrees (32 - 26), the 01 and 04 by 4 degrees (32 - 28), and the 01 and 02 by 2 degrees (32 - 30). The stronger the loft, the more the same 7-iron leans toward distance.

The 03 is 0.75 in longer than the 01 (37.75 - 37, about 19 mm) and 17 g lighter (417 - 400). The 04 is 35 g lighter than the 01 (417 - 382), though its shaft is different, as the table note says. On the price of the 5-club set, the 04 is ¥16,500 cheaper than the 03 (143,000 - 126,500) and ¥5,500 cheaper than the 01 and 02 (132,000 - 126,500).

How I picked: three yardsticks

I didn't rank on sales or review counts. I compared the four whose numbers I could read on PRGR's product pages, using three yardsticks.

Why This Order

This table scrolls sidewaysSwipe right →
RankModelYardstick figureWhy
No. 1PRGR 0428 degrees, 382 g, ¥126,500An oval cavity-back aimed at a low, deep center of gravity and high moment of inertia. The lightest and the cheapest of the four.
No. 2PRGR 0326 degrees, 400 g, ¥143,000The strongest loft of the four. An oval cavity-back that also aims at good rebound on high-face hits. It leans toward distance, but it's the most expensive.
No. 3PRGR 0230 degrees, 417 g, ¥132,000A center-spec iron with the center of gravity near the middle of the face. A balanced type, between workability and stability.
No. 4PRGR 0132 degrees, 417 g, ¥132,000The center of gravity sits slightly toward the heel, a build for skilled golfers. A model for players who put workability ahead of forgiveness.

Source: PRGR's official product pages (checked Oct 28, 2026). The ranking is mine, based on the 3 yardsticks above.

What I like

The 04 has a soft-iron S20C body and a nickel-chromium-molybdenum steel (SAE8655) face, rolled and forged in Japan. It has four grooves on the back of the face, and the page describes the head as semi-large.

The 5-club set is ¥126,500 with tax. Over 5 years, that's ¥25,300 per 1 year, or about ¥169 per 1 round at 150 rounds a year (126,500 ÷ 5, 25,300 ÷ 150, my calculation).

The 03 supports ±1 degree of loft adjustment and ±2 degrees of lie adjustment. Being able to fine-tune a strong loft afterward is a plus.

The 02 puts its center of gravity near the middle of the face, which the page says makes impact point and shot shape easier to match up.

What to watch for

With a stronger loft, the gap down to the wedges tends to widen. The 04's P is 41 degrees and its A is 46 degrees. Look at the wedge ranking or PRGR's R35 and R50 wedges, and plan on adding a club around 50 degrees.

The 03 is 0.75 in longer than the 01 and 02, at 37.75 in (with Spec Steel). If long clubs give you trouble, the 04's 37.25 in should be easier to swing.

None of the four product pages gives a release date or a target clubhead speed.

Who it suits: if you're torn, choose by what you want

Great for you if you

If you want to look beyond one maker, I laid the others out in the iron ranking and in irons that give you a rising ball flight.

Price and where to buy

The prices are the list prices in the table. For current stores and prices, see the buy box above.

When you buy, look at the shaft. The 04 comes with MCI FOR PRGR (S, SR, R, R2) or Spec Steel III Ver.2. The R2 is made to order. Weight changes with the shaft, so the total weight in the table is for the shaft listed.

What is your 7-iron loft?

Update history

About the writer and sources

Written by a gear nerd who studies golf equipment, averages a 72, and plays about 150 rounds a year.

I re-read the numbers against the sources below on Oct 28, 2026. Last updated Oct 28, 2026.

FAQ

Which PRGR iron is the most forgiving?

The 04. Its product page says it uses an oval cavity design aimed at low, deep center of gravity and high moment of inertia, and combines strong lofts with a semi-large head for distance and forgiveness. The 7-iron is 28 degrees and 382 g total (MCI FOR PRGR S).

What's the difference between the PRGR 01, 02, 03 and 04 irons?

The 7-iron lofts are 32 degrees for the 01, 30 for the 02, 26 for the 03 and 28 for the 04. The 01 has its center of gravity slightly toward the heel for workability, the 02 is center-weighted, and the 03 and 04 are cavity-backs, with the 03 two degrees stronger in loft.

How much do the PRGR irons cost?

The 5-club sets cost: the 04 is ¥126,500 with tax, the 03 is ¥143,000 with tax, and the 01 and 02 are ¥120,000 before tax (¥132,000 with tax). Source: PRGR's official site, checked Oct 28, 2026.

Ready to choose? Start here

Related reading

Iron ranking
Widens the view beyond one maker.

Irons that give you a rising ball flight
On the ball flight of strong-lofted irons.

Wedge ranking
On the clubs to add after strong-lofted irons.

Sources for this article

Last updated: Oct 28, 2026

Specs are figures published by the makers on their Japanese product pages and by media outlets (checked Oct 28, 2026). They are not numbers measured by this site.

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