OMAS Grand Prix
Main Photo
Category:  Headsets
Name:  OMAS Grand Prix
Brand:  OMAS
Model:  Grand Prix
Years:  1980's
Country:  Italy
Weight:  112 grams (Actual),
incl. a 2mm spacer
Added By: cinco on 11/16/07
Updated By: Tombo on 04/24/19
Additional Photos - click for full size
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 Verify Component Photos
Body MaterialAluminum; SteelUpper Bearing Size25 x 3/16" (retainer)
Lower Bearing Size25 x 3/16" (retainer)Crown Race SizeISO (26.4mm)
Upper Cup Markingsnone resp. double flute;
but "OMAS ITALY" + {threading} on the top nut
Lower Cup Markingsnone resp. double flute
Available Threading English/ISO/Italian (25.4mm x 24TPI)Stack Height ~28,5mm (upper;
incl. ~2mm spacer) + ~13mm (lower) = ~41,5mm total
General Information
Steel races, but aluminum cups & top nut.
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Additional Resources
Resources:Reference & ChartsCatalogs
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