OMAS "Big Sliding"
Main Photo
Category:  Headsets
Name:  OMAS "Big Sliding"
Brand:  OMAS
Primary Group:  'Big Sliding" Grouppo
Model:  "Big Sliding" Strada
Years:  1980's
Country:  Italy
Weight:  89 grams,
without spacer (93gr with campy SR Spacer)
Added By: JFischer on 12/05/10
Updated By: Tombo on 07/30/17
Additional Photos - click for full size
OMAS "Big Sliding"OMAS "Big Sliding"OMAS "Big Sliding"OMAS "Big Sliding"OMAS "Big Sliding"OMAS "Big Sliding"
 Verify Component Photos
Body MaterialAluminumUpper Bearing Size31 - 1/8"
Lower Bearing Size31 - 1/8"Crown Race SizeISO (26.4mm)
Upper Cup MarkingsLower Cup Markings
Available Threading English/ISO/Italian (25.4mm x 24TPI);
French (25mm x 1mm)
Stack Height 
General Information
The genuine ball bearings - with plastic cage (30 x 1/8") - could also be replaced by 31 loose 1/8" balls...
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Additional Resources
Resources:Reference & ChartsCatalogs
Component Groups
Primary Group NameBrandQuick InfoBrowse Group Components
"Big Sliding" Grouppo OMASView 4 Components
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