IWC · Big Pilot

Strap for Big Pilot Rose Gold / Black / Tourneau

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

22mm
Lug width22 mm
Case diameter46 mm
ReferenceIW5004-08 (aka: 5004-08, IW500408)
FamilyBig Pilot
MovementIWC caliber 51111 hours, minutes, seconds | date | power reserve indicator
Year2007 - 2008
CaseRed Gold

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Big Pilot IW5004-08 (aka: 5004-08, IW500408)

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Big Pilot IW5004-08 (aka: 5004-08, IW500408), seen from the bench

The IWC Big Pilot ref. IW500408 is powered by the automatic caliber 51111 with power reserve indicator in addition to the hours, minutes, seconds and date functions. The watch features 22mm lugs that characterize its aviator design. The movement provides a 7-day power reserve thanks to the double barrel system.

Frequently asked questions

What is the lug width of the IWC Big Pilot IW5004-08?

The lug width of the IWC Big Pilot IW5004-08 is 22 millimetres. Measure by placing a ruler on the inner side of the spring bar attachment: the distance between the two fixing holes corresponds exactly to 22mm. This dimension is consistent with the proportions of the 46.2mm case and ensures optimal visual balance.

Which strap is most suitable for the IWC Big Pilot IW5004-08 in rose gold?

For the IW5004-08 in rose gold, alligator in cognac brown or deep black represents the most natural choice. The grain texture resonates with the patina of rose gold without visual competition. Alternatively, vegetable-tanned calf leather in dark tones, or an intense navy NATO for those preferring a more robust and versatile option.

How do you change the strap on the IWC Big Pilot IW5004-08?

To change the strap, position the watch with the case facing upward. Locate the small spring bar that fastens the strap to the lugs. Using an appropriate tool (a specialist caseback opener or fine-tipped implement), gently push the spring bar inward to release it from its housing. The old strap can then be extracted. To install the new strap, align the hole with the spring bar and press gently until the spring bar locks into the new position.

Is an aftermarket strap compatible with the IWC Big Pilot IW5004-08?

Yes, any strap with a 22mm lug width is compatible with the IW5004-08. It is critical to verify that the strap is constructed to precise tolerances: a slightly undersized lug width causes constant friction, whilst an oversized one generates dangerous lateral play. Artisanal straps manufactured bespoke guarantee superior structural and aesthetic compatibility.

How long does a leather strap last on the IWC Big Pilot IW5004-08?

The longevity of a leather strap depends on the material and usage intensity. Quality alligator, with proper maintenance (periodic cleaning, protection from excessive humidity), lasts 5-8 years. Vegetable-tanned calf, more delicate, has a durability of 3-5 years. Factors such as climate, ambient humidity and usage intensity significantly influence longevity. A well-maintained strap develops a desirable patina that improves over time.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only