Srixon Zx Irons Specs: What Every Owner Should Know

The Srixon ZX iron family has three models—ZX4, ZX5, and ZX7—each with different lofts, offsets, and blade lengths. For a 7-iron, the ZX4 has a 27° loft and 3.5 mm offset, the ZX5 has 30° loft and 3.0 mm offset, and the ZX7 has 32° loft and 2.2 mm offset. These specs directly affect forgiveness, workability, and distance, so knowing them helps you decide which model fits your game and whether you need custom adjustments.

If you’re a mid-handicapper who wants maximum ball speed, the ZX4’s strong lofts are a good fit. If you prefer shaping shots and a traditional feel, the ZX7’s tighter offset and compact head are better. Mixing models? You’ll need to check gapping carefully—the 3° loft difference between ZX4 and ZX7 7-irons can create a 15‑yard gap where you might want 10.

Key Specs at a Glance

The table below shows the typical stock specs for a 7-iron in each model, based on Srixon’s published factory settings. Your exact numbers may vary if you ordered custom lengths, lie angles, or a different shaft/grip combination.

Spec	ZX4	ZX5	ZX7
Loft	27°	30°	32°
Lie	62.5°	62.5°	62.5°
Length	37.25″	37.0″	37.0″
Offset	3.5 mm	3.0 mm	2.2 mm
Stock swing weight	D1	D2	D2–D3

What to look for: The ZX4’s 27° 7-iron is among the strongest in the game-improvement category, reducing spin and increasing distance for slower swing speeds. The ZX7’s 32° is traditional, producing higher spin and a more controlled trajectory. The ZX5 sits in the middle.

Understanding the Differences Between ZX Models

ZX4 – Game-Improvement for Distance and Forgiveness

The ZX4 is a hollow-body iron with a high-strength steel face. Its strong loft (27° 7-iron) and large offset (3.5 mm) help launch the ball high and straight, with a large sweet spot. This model is ideal for mid-to-high handicappers who need maximum ball speed. The longer stock length (37.25” 7-iron) adds distance but may make the club feel heavy if you’re shorter than average. If you’re 5’8” or under, consider ordering a lie-angle adjustment or a slightly shorter shaft to keep the toe from digging.

ZX5 – Players Distance with a Balance of Feel

The ZX5 is a one-piece forged cavity back with a milled face. The 7-iron loft (30°) is moderate, and offset (3.0 mm) is slightly reduced from the ZX4. It offers a good mix of forgiveness and feedback for low-to-mid handicappers. Many golfers find the ZX5 easier to shape shots with than the ZX4, while still being forgiving on off-center hits. If you’re unsure between ZX4 and ZX7, the ZX5 is a safe middle option.

ZX7 – Compact Players Iron for Workability

The ZX7 is a fully forged, muscle-back-style cavity iron for better players. Loft (32° 7-iron) is standard, offset is tight (2.2 mm), and the blade is shorter. This model gives the most control over trajectory and spin, but demands a consistent strike. If you’re a single-digit handicap, the ZX7 is the go‑to for precision. The lower offset also reduces the tendency to hook the ball, which matters if you already fight a draw.

What to Check When Your Set Arrives

Even if you ordered standard specs, verify these four things before your first round.

1. Loft and lie angles – Srixon irons have a published tolerance of ±1°. Have a certified clubfitter check lofts and lies with a bending machine. A 1° lie error can cause a 4‑yard miss left or right with a 7-iron.

2. Offset – This is harder to measure accurately without a gauge, but you can do a quick visual check. Place the club sole-down on a flat surface. Look straight down from above: the leading edge of the face should sit noticeably behind the leading edge of the hosel for the ZX4 (3.5 mm). If it looks nearly flush, the offset may be wrong. For a more precise check, use a ruler and caliper to measure from the hosel’s front edge to the face’s front edge at the center of the clubface. A ZX5 should read about 3.0 mm ±0.5 mm.

3. Length – Measure from the grip cap to the sole center point (not the heel). The stock length for ZX5/ZX7 7-iron is 37.0”; if you ordered +½”, confirm it matches.

4. Swing weight – Stock swing weights are usually D2 for ZX5 and ZX7, D1 for ZX4. If a head is heavy or a grip heavier than the stock Golf Pride Z-Grip (about 50g), swing weight can change. Use a swing weight scale or have a shop check.

Shaft and Grip Considerations

Stock shaft options include Nippon N.S. Pro 950GH (steel) and UST Mamiya Recoil (graphite). Both are well-matched to the heads, but you’re not locked in. If you want a lighter feel or a different launch profile, aftermarket shafts like the PROJECTX Old Town Golf Cypher Iron Shaft offer an ultra-lightweight design that increases swing speed for effortless power. Its high-launch profile can help with approach shots, and the smooth energy transfer keeps consistency across the set. Always verify that any aftermarket shaft has the correct tip size (Srixon uses a 0.355” taper tip for most models) and that the swing weight stays in your comfort range.

The grip is another easy swap. The stock Golf Pride Z-Grip provides all‑weather traction, but you can change to a size or texture that fits your hands better.

What Can Go Wrong: Gapping and Fit Issues

The biggest mismatch risk is mixing ZX models in the same set without checking gapping. The ZX4 7-iron (27°) is 3° stronger than the ZX5 7-iron (30°) and 5° stronger than the ZX7 (32°). If you combine a ZX4 5-iron with ZX5 6-PW, you may end up with a 15‑yard gap between the 5- and 6-iron instead of the typical 10‑12 yards. Always hit the transition clubs on a launch monitor to verify.

Another trade-off: the ZX4’s large offset helps hook‑prone players get the ball in the air, but it can also cause a left bias for players with a neutral or slight fade. If you tend to hit the ball left already, the ZX4 may exaggerate that shot shape. Consider a lie angle adjustment (flatten 1°–2°) to compensate, or move to the ZX5/ZX7 for less offset.

Frequently Asked Questions

Can I bend Srixon ZX irons to adjust lofts and lies?

Yes. All three models are made from forged or cast steel that can be bent up to 2° without compromising the head. Take the set to a qualified clubfitter with a bending machine. Do not attempt DIY bending.

What is the stock swing weight on the ZX5?

Standard swing weight for the ZX5 is D2 with a steel shaft, and around D1–D2 with graphite. The actual number depends on head weight and shaft balance point. If yours feels heavy or light, have it measured.

How do I confirm the exact specs of my custom order?

Srixon includes a specification sheet with each custom order. If you lost it, call the retailer or Srixon customer support with the serial number on the hosel to request the build sheet.

Are ZX irons suitable for left‑handed players?

Yes, all three models (ZX4, ZX5, ZX7) are available in left‑handed configurations. Stock specs are the same as right‑handed for loft, lie, and length.