Shimano FC-7300, Dura-Ace AX
Main Photo
Category:  Cranksets
Name:  Shimano FC-7300, Dura-Ace AX
Brand:  Shimano
Primary Group:  Dura-Ace AX
Model:  FC-7300
Years:  1981 - 1984
Country:  Japan
Weight:  632 grams (Actual)
Added By: JFischer on 07/07/07
Updated By: movinyl on 02/21/17
Additional Photos - click for full size
Shimano FC-7300, Dura-Ace AXShimano FC-7300, Dura-Ace AXShimano FC-7300, Dura-Ace AXShimano FC-7300, Dura-Ace AXShimano FC-7300, Dura-Ace AXShimano FC-7300, Dura-Ace AXShimano FC-7300, Dura-Ace AX
Chainring CountDoubleBCD 130mm
BB StyleSquare Taper (JIS)Pedal Threads1" x 24 (Dyna-Drive)
BB Length 107, 109 mmFlutes None
Lengths 165; 170; 172.5; 175Arm/Spider MaterialAluminum Alloy
Front MarkingsDura-Ace AXBack MarkingsShimano Japan [crank length] [date code]
Extractor Threading 22x1mm (Standard)  
General Information

Part of Shimano's Dura-Ace AX group which was designed to be 'Aero'. Original set included bottom bracket (cf. photograph).

* Weight is from '82 catalog and is based on a 52/42T 170mm crank.

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Additional Resources
Resources:Reference & ChartsCatalogsGear Calculator
Component Groups
Primary Group NameBrandQuick InfoBrowse Group Components
Dura-Ace AX, 7300 seriesShimano1981 - 1984, Road RaceView 21 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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