Strap for Big Pilot’s Watch Monopusher Edition Antoine de Saint Exupéry

The IWC Big Pilot IW5152-04 has a lug width of precisely 22mm. This dimension is standardised across all contemporary Big Pilot examples. To verify aftermarket strap compatibility, measure the internal space between the two lugs on the case: the result must correspond to 22mm without significant tolerances.

For the Big Pilot IW5152-04 in rose gold, alligator remains the historically correct and stylistically coherent choice. Alligator with medium-fine grain dialogues perfectly with the 46mm case proportion and the natural patina of rose gold. High-quality alternatives include vegetable-tanned calf (which evolves over time) and shell cordovan, which offers density and lustre comparable to the finest leather.

Strap replacement requires extraction of the spring bars that connect the strap to the case lugs. Use a dedicated spring bar tool to gently depress the internal springs, allowing them to slide out of their seats. Repeat from the other side. Insert the new strap by aligning the holes with the lugs and press the spring bars until they click into position. Avoid forcing: the mechanism must enter fluidly.

Yes, the 22mm lug width is standard on numerous chronographs and sport watches, including other IWC models, Breitling, Zenith and similar brands. However, the depth of the lug seat can vary slightly between manufacturers. We recommend always verifying your watch's technical specifications before purchasing an aftermarket strap to ensure complete compatibility.

A high-quality leather strap (alligator, vegetable-tanned calf, shell cordovan) designed for a luxury watch like the Big Pilot has an average lifespan of 3–5 years under normal daily use conditions, increasing to 7–10 years with proper maintenance and occasional wear. Longevity depends on ambient humidity, sun exposure and cleaning frequency. Rubber straps (Tropic/Rallye) offer a lifespan of 4–6 years before showing degradation signs.