Strap for Big Pilot Constant-Force Tourbillon IWC Racing

The IWC Big Pilot IW5905-01 is fitted with a lug width of 22 millimetres. This measurement is essential for selecting a compatible strap: it is calculated by measuring the distance between the two attachment points on the case. To verify it, use a digital calliper and measure from the inside edge to the inside edge of the lug. Any quality-certified 22mm strap will be compatible with this reference.

The Big Pilot IW5905-01 performs best with materials that respect its professional vocation. Italian calf leather in vegetable tanning introduces a natural patina that dialogues elegantly with the anthracite Ceratanium case. Natural alligator amplifies formal authority, whilst shell cordovan offers a particularly refined texture. For operational settings, water-resistant aniline leather remains a legitimate solution, as does heavy canvas NATO strap. The choice depends on the context of use and personal aesthetic preference.

The strap change on the Big Pilot IW5905-01 is performed through removable lugs located on the case. Obtain a specialised removal tool (plastic or stainless steel pin) to avoid scratching the Ceratanium. Position the watch on a flat surface, align the pin with the lug ejection hole and push gently until the metal lug emerges. Repeat the operation on the other end, then remove the old strap and insert the new one. Finally, reinstate the lugs and verify they are locked securely.

Yes. The IWC Big Pilot IW5905-01, fitted with a standard 22mm lug width, is compatible with numerous quality-certified aftermarket straps. On specialised platforms such as milanostraps.it you will find a curated selection of 22mm straps in various leathers: calf, alligator, shell cordovan, water-resistant aniline. Compatibility is guaranteed by the lug width, independent of the strap brand. Ensure the strap has been manufactured specifically for 22-millimetre lugs to prevent fitting issues or instability.

The lifespan of a leather strap depends on intensity of use, leather quality and maintenance. A strap in Italian calf leather crafted in vegetable tanning, worn daily, maintains excellent functionality for 3-5 years before requiring replacement or restoration. Natural alligator and shell cordovan, owing to their superior fibre density, may last 5-7 years under normal conditions. An aniline water-resistant leather strap, subjected to intense professional wear, may require replacement within 2-3 years. The natural patina that develops over time—particularly on vegetable-tanned calf—represents an aesthetic enrichment, not a functional degradation.