Shimano RD-A105, 105 Golden Arrow (dark parallelogram)
Main Photo
Category:  Rear Derailleurs
Name:  Shimano RD-A105, 105 Golden Arrow (dark parallelogram)
Brand:  Shimano
Primary Group:  105 Golden Arrow
Model:  RD-A105
Years:  1986
Country:  Japan
Added By: JFischer on 11/26/10
Updated By: JFischer on 11/26/10
Additional Photos - click for full size
Shimano RD-A105, 105 Golden Arrow (dark paral
Outer Plate MarkingsShimano [Golden Arrow]Inner Plate MarkingsRD-A105 Shimano Japan VIA
MaterialAluminum AlloyDesign CategoryInline parallelogram
Attachment Bolt Size6mm Allen KeyCable Attachment Bolt Size5mm Allen Key
Shifting SystemsFrictionCable AdjusterYes
Cage LengthShortMax Cog Size28
Max Chain Wrap28T confirmed  
General Information

Part of the first generation Shimano 105 group, commonly known as the Golden Arrow group.  Also available in the (rare?) GS long cage version.  Servo-Panta Mechanism, Hatch-Plate Mechanism.  Max front chain ring difference spec: 13T.   

This is a very interesting and probably unique example of the Shimano 105 Golden Arrow derailleur.  It was found on a Miyata 310 being sold on eBay with a partial Shimano 105 group (non-Shimano crank).  The jockey cage is also a slightly different style than then standard found on other 105 Golden Arrow deraileurs, specifically around the lower jockey wheel.  One source states that this derailleur was produced in 1986, just prior to the introduction of the next generation 105 group.

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Additional Resources
Resources:Reference & ChartsCatalogs
Component VariationsView Detailed List  Manage Variations
Variations of Component exist (Component is 1 of 3)BrandGroup
Shimano RD-A105, 105 Golden ArrowShimano105 Golden Arrow
Shimano RD-A105, 105 Golden Arrow (long cage)Shimano105 Golden Arrow
Component Groups
Primary Group NameBrandQuick InfoBrowse Group Components
105 Golden ArrowShimano1983 - 1986, Road RaceView 14 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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