Shimano RD-A300, 300EX
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Category:  Rear Derailleurs
Name:  Shimano RD-A300, 300EX
Brand:  Shimano
Primary Group:  Exage 300EX
Model:  RD-A300
Years:  1990 - 1999
Country:  Japan
Weight:  268 grams
Added By: Brew on 11/02/07
Updated By: Guidolol on 01/23/13
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Shimano RD-A300, 300EXShimano RD-A300, 300EXShimano RD-A300, 300EXShimano RD-A300, 300EXShimano RD-A300, 300EXShimano RD-A300, 300EX
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Outer Plate Markings300EX ExageInner Plate MarkingsShimano RD-A300
MaterialAluminum Alloy; CompositDesign CategorySlant parallelogram
Attachment Bolt Size5mm Allen KeyCable Attachment Bolt Size8mm Wrench
Shifting SystemsShimano SIS
Shimano STI
Friction
Cable AdjusterYes
Cage LengthShortMax Cog Size
Max Chain Wrap28T  
General Information
Designed for 7 speed, but can be used as a 6, 7 or 8speed with SIS shifters.
Quality:Rarity:
 
 
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Additional Resources
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Resources:Reference & ChartsCatalogs
Component Groups
Primary Group NameBrandQuick InfoBrowse Group Components
Exage 300EXShimano1990 - 1999, Sport & RecreationView 9 Components
Details:   Exage 300EX group was placed at the lower end of Shimano's Road groups through the 1990's. 
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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