Breitling · AVI

Strap for Aviator 8 Automatic 41 Stainless Steel / Black / Calf / Pin

Takes 21 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width21 mm
Case diameter41 mm
ReferenceA17315101B1X1
FamilyAVI
MovementBreitling caliber 17 hours, minutes, seconds | date
Year2019
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the AVI A17315101B1X1

Selected for the 21 mm lug width

All 21 mm straps →

The AVI A17315101B1X1, seen from the bench

The Breitling AVI Aviator 8 Automatic 41 ref. A17315101B1X1 is a 41 mm stainless steel sports watch with black dial and applied indices, powered by the Breitling Caliber 17 automatic movement. The 21 mm lug width is a defining specification requiring precise compatibility with aftermarket straps. The satin-finished steel case is water-resistant to 300 m and features a pilot's bezel with tachymeter scale.

Frequently asked questions

What is the lug width of the Breitling AVI A17315101B1X1?

The Breitling AVI A17315101B1X1 has a lug width of 21 mm. This is a non-standard measurement that requires specifically sized straps: a 20 mm strap would be visibly undersized and would compromise both aesthetics and buckle alignment. Before purchasing a replacement strap, it is advisable to verify the lug width using a digital calliper positioned between the lower lugs of the case.

What is the best strap for the Breitling AVI A17315101B1X1?

For the Breitling AVI A17315101B1X1, the most effective choices are matte calf leather in tobacco brown or black, glossy Mississipiensis alligator for a formal register, and vulcanised rubber for sporting use. A bi-colour black/anthracite ballistic nylon NATO strap is the option most faithful to the watch's military DNA. In all cases, the strap width must be 21 mm to ensure proper lug compatibility.

How do you change the strap on the Breitling AVI A17315101B1X1?

To replace the strap on the Breitling AVI A17315101B1X1, a dedicated springbar tool is required. Position the tip of the tool in the groove on the spring bar, compress laterally and slide the strap out of the lug. The operation requires care to avoid scratching the brushed stainless steel case. If in doubt, it is recommended to consult a watchmaker or visit the Casati Milano atelier.

Are there aftermarket straps compatible with the Breitling AVI A17315101B1X1?

Yes, there are numerous aftermarket straps compatible with the Breitling AVI A17315101B1X1, provided they have an attachment width of 21 mm. Milanostraps.it offers a selection of handcrafted leather, rubber and nylon straps with verified dimensional compatibility for this specific model. The build quality of these straps is comparable — and in many cases superior — to that of original Breitling accessories.

How long does a leather strap last on a Breitling AVI A17315101B1X1?

The lifespan of a leather strap depends on the quality of the hide, the tanning method and daily use. A high-quality vegetable-tanned leather strap, carefully maintained and occasionally treated with neutral wax, can last between 3 and 5 years with daily wear. Prolonged exposure to perspiration, water and UV rays accelerates deterioration: for intensive sporting use or humid environments, vulcanised rubber or nylon straps are preferable.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only