Shimano EA-100, Dura-Ace (First Generation)
Main Photo
Category:  Front Derailleurs
Name:  Shimano EA-100, Dura-Ace (First Generation)
Brand:  Shimano
Primary Group:  Dura-Ace
Model:  E-404 / EA-100
Years:  1973 - 1976
Country:  Japan
Weight:  108.33 grams (avg)
View Weight List
Added By: JFischer on 07/06/07
Updated By: stedeu on 01/31/18
Additional Photos - click for full size
Shimano EA-100, Dura-Ace (First Generation)Shimano EA-100, Dura-Ace (First Generation)Shimano EA-100, Dura-Ace (First Generation)Shimano EA-100, Dura-Ace (First Generation)
# Rings Designed For DoubleOuter Plate MarkingsDura-Ace with four rectangular holes
Inner Plate MarkingsShimano Industrial Co Ltd. JapanClamp MarkingsShimano
Inner Clamp MarkingsNoneDesign CategoryParallelogram
Pivot Arm MarkingsNonePlate MaterialSteel
Clamp Style28.6mm ClampCable Attachment Bolt8mm Wrench
CableStop NoClamp Bolt Type
Max Ring Difference 16T  
General Information
Appears to be the First Generation Dura-Ace front derailleur.  Clamp came in both silver and black variations.  Weight: 105g.  73-74 this model was known as the E-404, in 75 it was renamed the EA-100 to become more standardized with the rest of the Dura-Ace group in 75.  Alloy body, steel cage.
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Additional Resources
Resources:Reference & ChartsCatalogs
Component VariationsView Detailed List  Manage Variations
Variations of Component exist (Component is 1 of 2)BrandGroup
Shimano EA-100, Dura-Ace (Black)ShimanoDura-Ace
Component Groups
Primary Group NameBrandQuick InfoBrowse Group Components
Dura-Ace, First GenerationShimano1973 - 1976, Road RaceView 35 Components
Details:   The introduction of Dura-Ace in the mid 1970's, along with the indroduction of the Shimano 600 group were Shimano's first attempts at a professional quality road racing component group.  The first Generation Dura-Ace was updated and renamed the 7100 series by around 1977/78.
Group NameBrandQuick InfoBrowse Group Components
Dura-Ace 7100Shimano1977 - 1984, Road RaceView 18 Components
Brand Information(click to expand)

Shimano Model Number Prefix List:

BB Bottom Bracket BL Brake Lever BR BRake
CB Coaster Brake CJ Cassette Joint CN ChaiN
CP Chain Protecto CR Chain Ring CS Cassette Sprockets
DF chain DeFlector DH Dynamo Hub FC Front Crank
FD Front Derailleur FE Fork Ends FH FreeHub
FS Front Suspension HB HuB HD HanDle bar
HP Head Parts (Head Set) HS Handle Stem IF Inter-3 Freehub
LP LamP MF Multi Freewheel PD PeDal
RD Rear Derailleur RH Rollerbrake Hub RM RiM
RR ReflectoRs RS Rear Suspension SB Shift Brake lever (Nexus, ?)
SC Speed Calculator (cycle computer) SF Single Freewheel Freilaufritzel SG Speed chanGe hub
SH SHoes SL Shift Lever Schalthebel SM SMall parts
SP Seat Post SQ Seat Quick release SS Single Sprocket
TL TooL WH WHeel ST Shift Brake Lever (STI, Rapid Fire, etc)
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WeightSourceNotesAdded By
105 GramsSpecE-404 version JFischer
110 GramsActual fightfooter
110 GramsActual stedeu
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