IWC · Big Pilot

Strap for Big Pilot's Watch Perpetual Calendar Racing Green

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 diameter47 mm
ReferenceIW5030-05 (aka: IW503005)
FamilyBig Pilot
MovementIWC caliber 52615 Hours, Minutes, Small Seconds | Date, Day, Month, Perpetual Calendar, Year Indicator | Moonphase | Power Reserve Indicator
CaseTitanium, Ceramic

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 IW5030-05 (aka: IW503005)

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Big Pilot IW5030-05 (aka: IW503005), seen from the bench

The Big Pilot IW503005 features the IWC Caliber 52615 with perpetual calendar, moonphase, and power reserve indicator. The watch has functions for hours, minutes, small seconds, full date with year indication, and moonphase. The case features 22mm lugs for the strap.

Frequently asked questions

What is the lug width of the IWC Big Pilot IW5030-05?

The lug width of the IWC Big Pilot IW5030-05 is 22 millimetres. This specification is critical for selecting a compatible strap. To verify the correct width, measure the distance between the pins attaching the strap to the lugs: it must be exactly 22mm.

Which strap do you recommend for the IWC Big Pilot IW5030-05?

For the Big Pilot, we recommend alligator straps in black for formal contexts, brown alligator or vegetable-tanned leather for daily wear, and natural rubber or fabric for sporting applications. The 22mm width allows exploration of a wide range of premium materials without structural compromises.

How do I change the strap on my IWC Big Pilot IW5030-05?

To change the strap, use a spring bar tool to compress the micro-pins securing the strap to the lugs. Remove the old strap, insert the pins into the new strap, and release the tool. Verify that the strap is perfectly aligned before wearing the watch. If inexperienced, consult a professional.

Can I use an aftermarket strap on my IW5030-05?

Yes, you may use any quality aftermarket strap with 22mm lug width. Verify that the manufacturer specifies this width to avoid incompatibility. Artisanal premium leather straps, customised for the Big Pilot, offer superior durability and aesthetics compared to non-original OEM straps.

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

A premium leather strap (alligator, shell cordovan, calf) typically lasts 3-5 years with daily wear, provided it receives regular maintenance: avoid salt water, harsh detergents, and prolonged humidity. Vegetable-tanned leather develops natural patina and may last over 7 years. Replacement depends on frequency of use and care.

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