Formex Motorsport

    Every reference with a known width takes the same strap size. Your reference is engraved on the case back or between the lugs at 6 o'clock.

    25 mm

    From our database, not yet verified

    46.5 mm case

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    Indicative information. Check your watch before buying a strap: whatsmylugwidth.com is not responsible for an incorrect size.

    Collection9 references
    25 mm
    Illustration drawn to scale: 46.5 mm case, 25 mm lugs

    Lug widths across the line

    The Formex Motorsport takes a 25 mm strap: all 9 references with a listed width in our database use 25 mm. Check the reference on your case back to be sure.

    Filter references by lug width

    9 Formex Motorsport references

    Formex Motorsport references in our database. Each card says where its width comes from: listed by the maker (linked to the maker's page in the details), two independent sources agree, or listed in our database and not yet verified by us.

    • 3100.9.8299.110

      Motorsport Automatic Chronograph PVD / Carbon Bezel / Limited Edition / Bracelet

      25 mm

      Database

      46.5 mmBlack dial

    • 3100.9.8299.216

      Motorsport Automatic Chronograph PVD / Carbon Bezel / Limited Edition / Calf

      25 mm

      Database

      46.5 mmBlack dial

    • 3100.9.8299.910

      Motorsport Automatic Chronograph PVD / Carbon Bezel / Limited Edition / Rubber

      25 mm

      Database

      46.5 mmBlack dial

    • 3100.4.8122.110

      Motorsport Automatic Chronograph PVD / Red Bezel / Black / Bracelet

      25 mm

      Database

      46.5 mmBlack dial

    • 3100.4.8122.216

      Motorsport Automatic Chronograph PVD / Red Bezel / Black / Calf

      25 mm

      Database

      46.5 mmBlack dial

    • 3100.4.8122.910

      Motorsport Automatic Chronograph PVD / Red Bezel / Black / Rubber

      25 mm

      Database

      46.5 mmBlack dial

    • 3100.1.8140.100

      Motorsport Automatic Chronograph Red Bezel / Black / Bracelet

      25 mm

      Database

      46.5 mmBlack dial

    • 3100.1.8140.216

      Motorsport Automatic Chronograph Red Bezel / Black / Calf

      25 mm

      Database

      46.5 mmBlack dial

    • 3100.1.8140.910

      Motorsport Automatic Chronograph Red Bezel / Black / Rubber

      25 mm

      Database

      46.5 mmBlack dial

    FAQ

    What lug width does the Formex Motorsport use?

    The Formex Motorsport takes a 25 mm strap: all 9 references with a listed width in our database use 25 mm. Check the reference on your case back to be sure. These widths come from our database and are not yet verified.

    Where do these Formex Motorsport lug widths come from?

    From our database, which lists 9 Formex Motorsport references, 9 of them with a listed width. Each reference card says whether the maker lists the width, two independent sources agree on it, or it is not yet verified.

    Other Formex collections

    All Formex collections

    Help

    What is lug width?

    The gap between the two lugs that hold the strap, in millimetres. A new strap must match it exactly: 20 mm lugs take a 20 mm strap.

    Measure it in 30 seconds

    1. Take the strap off, or look at the back of it: many straps print their width.
    2. Measure the inside gap between the lugs with a caliper or a millimetre ruler.
    3. Round to the nearest whole millimetre. Most watches use 18, 20 or 22 mm.

    Strap, quick release or system?

    Most watches use spring bars, so any strap of the right width fits. Many smartwatches use their own band system instead, such as Apple Watch bands or Garmin QuickFit.