Shimano GA-200, Dura-Ace (drilled rings)
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Category:  Cranksets
Name:  Shimano GA-200, Dura-Ace (drilled rings)
Brand:  Shimano
Primary Group:  Dura-Ace
Model:  GA-200
Years:  Mid 1970's - Late 1970's
Country:  Japan
Added By: RaptorLabz on 05/23/23
Updated By: RaptorLabz on 02/23/24
Additional Photos - click for full size
Shimano GA-200, Dura-Ace (drilled rings)
 Verify Component Photos
Chainring CountDoubleBCD 130mm
BB StyleSquare Taper (ISO)Pedal Threads9/16" x 20 (English)
BB Length 112Flutes Crank Arm; Spider
Lengths 170Arm/Spider MaterialAluminum Alloy
Front MarkingsDura-Ace inside flute on crank arm;
Shimano Japan Dura-Ace on bolt
Back Markingslength, date code
Extractor Threading 22x1mm (Standard)  
General Information
Like the standard silver GA-200, but with drilled chainrings. Known date code: CF, so 1978. 
Quality:Rarity:
 
 
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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 First GenShimanoDura-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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Brooks Saddles
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