Strap for Pilot Automatic Chronograph Black / Rubber

The lug width of the Formex Pilot 1100.1.8020.910 is certified at 22mm with a tolerance of ±0.2mm. This measurement is critical when selecting compatible straps and should be verified using a digital calliper positioned between the two horizontal lugs on the case. A narrower strap width would create unwanted vertical play, whilst a wider width would not engage the lugs correctly.

From an aesthetic and functional standpoint, alligator leather from the Nile in vegetable tanning represents the most suitable choice, offering a fine, irregular grain texture that contrasts elegantly with the volumetric metallicity of the case. Should you prefer a sporty, moisture-resistant solution, fluoroelastomeric rubber straps deliver superior grip and virtually unlimited durability. NATO fabric ribbons remain an economical and historically coherent choice given the model's aeronautical origins.

To replace the strap, position the watch on a stable surface and use a spring bar tool to gently compress the outer pin whilst sliding it horizontally towards you. Repeat on the opposite side. Align the new strap's holes with the lugs, then engage the spring bars. Work carefully to avoid scratching the case.

Any strap with a 22mm lug width is compatible: full-grain leather, alligator, technical rubber, woven NATO ribbons. Always verify that the width is precisely 22mm and that the spring bar holes are correctly positioned. Our catalogue offers curated selections specifically matched to this model with compatibility certification.

A high-quality vegetable-tanned leather strap, worn daily and properly maintained, will typically last 3–4 years before requiring replacement. Constant exposure to moisture, salt perspiration, and direct sunlight shortens this lifespan. The natural patina acquired through ageing increases aesthetic value, whilst regular strap replacement remains the most economical and sustainable practice.