Shimano GA-200, Dura-Ace First Gen
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Category:  Cranksets
Name:  Shimano GA-200, Dura-Ace First Gen
Brand:  Shimano
Primary Group:  Dura-Ace
Model:  GA-200
Years:  1973 - 1976
Country:  Japan
Added By: JFischer on 07/19/07
Updated By: MGTS on 03/12/15
Additional Photos - click for full size
Shimano GA-200, Dura-Ace First GenShimano GA-200, Dura-Ace First GenShimano GA-200, Dura-Ace First GenShimano GA-200, Dura-Ace First GenShimano GA-200, Dura-Ace First GenShimano GA-200, Dura-Ace First GenShimano GA-200, Dura-Ace First Gen
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Chainring CountDoubleBCD 130mm
BB StyleSquare Taper (ISO)Pedal Threads9/16" x 20 (English)
BB Length 112, 113mmFlutes Crank Arm; Spider
Lengths 165; 167.5; 170; 172.5; 175Arm/Spider MaterialAluminum Alloy
Front MarkingsDura-Ace inside flute on crank armBack Markings[length] [date code]
Extractor Threading 22x1mm (Standard)  
General Information

Optional chain guard on outer ring.  This crankset got a face lift around 1977 with new chain rings and a rename as the FC-7110 which was produced into the early 80's.  The 1975 Catalog shows the crankset as model GA-200.  The 175mm length became avaliable in 1975.  167.5 and 172.5mm lengths were avaliable upon request only in 75 and after.

From the 1974 Catalog:
FC-201: 52/39 rings, 165mm, with chain guard, packed with BB and toolset
FC-202: 54/45 rings, 165mm, no chain gaurd, packed with BB and toolset
FC-203: 52/39 rings, 170mm, with chain guard, packed with BB and toolset
FC-204: 54/45 rings, 170mm, no chain gaurd, packed with BB and toolset

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Additional Resources
Resources:Reference & ChartsCatalogsGear Calculator
Component VariationsView Detailed List  Manage Variations
Variations of Component exist (Component is 1 of 4)BrandGroup
Shimano GA-200, Dura-Ace (Black)ShimanoDura-Ace
Shimano GA-200, Dura-Ace (Black, drilled rings)ShimanoDura-Ace
Shimano GA-200, Dura-Ace (drilled rings)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.
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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