Strap for Big Pilot Titanium / Black / Bartorelli

The lug width of the IWC Big Pilot IW5004-11 is 22mm. This width is specifically engineered for this model to ensure correct visual proportion between the massive 46.2mm case and the strap. To verify, measure the internal space between the case lugs with a rigid ruler.

For the Big Pilot IW5004-11, we recommend genuine alligator (black or dark brown) for formal contexts, full-grain calf leather with vegetable tanning for a professionally aged patina, or FKM rubber for technical applications. Your choice depends on intended use: commercial aviation suggests alligator, military contexts favour NATO or rubber straps.

To change the strap, use a spring bar tool to remove the lugs. Place the watch on a soft surface, locate the small lateral hole on each lug, insert the tool to compress the internal spring, and gently extract the pin. Repeat for the second pin, position your new strap, and reinsert the pins until they click into place.

Absolutely. A premium 22mm artisanal strap in alligator, calf, or rubber significantly improves both the appearance and functionality of your watch. The Casati Milano atelier provides custom-made straps with your choice of leather and bespoke stitching, ensuring absolute compatibility with the IWC lug.

Durability depends on material and usage. A premium alligator strap lasts 4-6 years with regular maintenance (gentle cleaning and occasional hydrophobic treatments). Vegetable-tanned calf, more absorbent, requires more frequent care but develops an appealing patina over time. Casati Milano offers an 18-month warranty on all artisanal straps.