Simplex Competition (double, steel)
Main Photo
Category:  Chainrings
Name:  Simplex Competition (double, steel)
Brand:  Simplex
Model:  Competition
Years:  1950's - 1970's
Country:  France
Weight:  413.45 grams (avg)
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Added By: David Beck on 02/24/08
Updated By: peterbman on 03/23/15
Additional Photos - click for full size
Simplex Competition (double, steel)Simplex Competition (double, steel)Simplex Competition (double, steel)Simplex Competition (double, steel)Simplex Competition (double, steel)Simplex Competition (double, steel)
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Identifying MarksJuy Simplex Brevete S.G.D.BCD 116
Tooth Count Range44/48Ring PositionDual Chainring Set
Chain PitchChain Width
General Information
Pictured: 48/45 aluminum rings on a chromed steel adapter.
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Additional Resources
Resources:Reference & ChartsCatalogsExternal Resources
Component VariationsView Detailed List  Manage Variations
Variations of Component exist (Component is 1 of 2)BrandGroup
Simplex Competition (double, alloy)Simplex
Brand Information(click to expand)

Known for their black plastic (Delrin) derailleurs during the "bike boom" of the 1970's, they were at the forefront of innovation over the years, producing such highly regarded items as the Super LJ derailleurs, Retrofriction shifters, and very popular line of seat posts.

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WeightSourceNotesAdded By
396.9 GramsSpec47x50T assembly JFischer
430 GramsSpec JFischer
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