Rolex · Daytona
Strap for Cosmograph Daytona Rolesor / White
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Daytona 116523-0040
Selected for the 20 mm lug width · workshop selection
Matte Dark Gray Alligator Strap€195
Black Alligator Strap with Light Red Edging€149
Vintage Alligator Strap Cognac€195
Hammered Pink Strap with Ecru Stitching€98
Vintage Brown Calfskin Strap — Natural Patina€98
The Daytona 116523-0040, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Daytona 116523-0040?
The Rolex Daytona 116523-0040 features a lug width of 20 millimetres. This measurement, also known as ansa width in Italian horology terminology, represents the distance between the two spring bar posts that attach the strap to the case lugs. A compatible strap must be cut precisely to this dimension to ensure correct fit without slack or pressure on the attachment mechanism.
What is the best strap material for the Daytona 116523-0040?
For the Daytona 116523-0040, alligator leather remains the most refined choice, thanks to its regular texture and ability to enhance the two-tone gold and steel aesthetic. Shell cordovan is ideal for those who appreciate a patina that ennobles with age. Vintage calf, particularly vegetable-tanned, offers chromatic versatility and longevity of 7-10 years. For sport-casual use, textured black rubber maintains the chronograph attitude without practical compromise.
How do I change the strap on my Rolex Daytona 116523-0040?
Strap replacement requires a spring bar tool or peg remover. Place the watch on a soft surface to prevent scratching, locate the small lateral holes beneath the lugs, insert the flat lever of the tool to compress the internal spring bar, then gently extract the old strap. Insert the spring bar into the new strap's receiving slot and push until it clicks into place. We recommend having an authorised watchmaker perform this operation if you lack experience.
Is an aftermarket strap compatible with the Rolex Daytona 116523-0040?
Yes, any strap with a 20mm lug width is compatible with the Daytona 116523-0040, provided it meets adequate quality standards. Bespoke straps in alligator, calf, or shell cordovan represent both aesthetic and functional upgrades over OEM accessories. It is essential to verify that the strap is constructed by specialised ateliers respecting millimetric tolerances and utilising superior-grade materials.
How long does a leather strap last on a Daytona?
Longevity depends on material and usage patterns. Alligator or shell cordovan, well-maintained, lasts 8-15 years; vegetable-tanned calf 7-10 years; industrial calf 4-7 years. Exposure to perspiration, moisture, and sunlight accelerates ageing. Regular maintenance (gentle cleaning with a damp cloth, annual conditioning with neutral creams) significantly extends strap life. Straps backed by an 18-month production defect warranty provide purchase peace of mind.
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.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only

