Hublot · Classic Fusion

Strap for Classic Fusion 45 Titanium / Blue / Rubber

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter45 mm
Reference511.NX.7170.RX
FamilyClassic Fusion
MovementHublot caliber HUB1112 Hours, Minutes, Seconds | Date
CaseTitanium, Resin

Spring bar

Swiss Standard universal spring bars

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

Straps for the Classic Fusion 511.NX.7170.RX

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Classic Fusion 511.NX.7170.RX, seen from the bench

The Classic Fusion 511.NX.7170.RX is a 45mm titanium sports watch featuring Hublot's HUB1112 manufacture movement. The aerospace-grade titanium case with composite resin inserts is defined by its signature H-shaped screws. Lug width is 20mm. This model combines brushed titanium with composite resin in a contemporary material fusion, delivering hours, minutes, seconds, and date functions. The titanium construction—approximately 40% lighter than steel—ensures comfortable all-day wear despite the substantial 45mm diameter.

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