Simplex SX410 T
Main Photo
Category:  Rear Derailleurs
Name:  Simplex SX410 T
Brand:  Simplex
Model:  SX410 T
Years:  1977 - 1985
Country:  France
Weight:  311 grams
Added By: nprenet on 11/17/07
Updated By: peterbman on 04/08/15
Additional Photos - click for full size
Simplex SX410 TSimplex SX410 TSimplex SX410 TSimplex SX410 TSimplex SX410 TSimplex SX410 TSimplex SX410 T
Outer Plate MarkingsSimplexInner Plate MarkingsBrevete Simplex S.G.D.G Made in france
MaterialPlastic; SteelDesign CategoryInline parallelogram
Attachment Bolt Size5mm Allen KeyCable Attachment Bolt Size5mm Allen Key
Shifting SystemsFrictionCable AdjusterYes
Cage LengthShortMax Cog Size30
Max Chain Wrap30  
General Information
Model is stamped on edge of front parallel plate. Front parallel plate is stamped steel, rear is steel-reinforced plastic. Steel cage. Unthreaded hanger bolt. Replaced in the early 80's by a sloped parallelogram version: the SX610.
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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 SX410 GT (long cage)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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