Stronglight V4 Competition (later version, octagonal locknut)
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Category:  Headsets
Name:  Stronglight V4 Competition (later version, octagonal locknut)
Brand:  Stronglight
Model:  V4
Years:  1960's - Early 1980's
Country:  France
Weight:  210 grams
Added By: CV-6 on 11/27/07
Updated By: peterbman on 04/04/14
Additional Photos - click for full size
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Body MaterialSteelUpper Bearing Size5/32"
Lower Bearing Size20 x 5/32'Crown Race Size
Upper Cup MarkingsStronglightLower Cup MarkingsStronglight
Available Threading English/ISO/Italian (25.4mm x 24TPI);
French (25mm x 1mm)
Stack Height 
General Information
Octagonal locknut used in the later version of V4. Locknut marked Stronglight Competition.  Lockring and fork crown race marked Stronglight. Weight is sans bearings. V type bearing races on the Competition model, whereas the P3 model has normal curved type bearing races. 1958 Stronglight catalog says the V4 headset is precision engineered. V type bearing races are difficult to manufacture, involving great care in grinding as tolerances are very small. V type bearings are suited for longer life including stage racing. V4 appears in 1982 Stronglight catalog but is not in 1984 catalog.
Quality:Rarity:
 
 
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