Shimano BR-7300, Dura-Ace AX
Main Photo
Category:  Brakes
Name:  Shimano BR-7300, Dura-Ace AX
Brand:  Shimano
Primary Group:  Dura-Ace AX
Model:  BR-7300
Years:  1981 - 1984
Country:  Japan
Weight:  344 grams
Added By: JFischer on 07/07/07
Updated By: JFischer on 04/19/11
Additional Photos - click for full size
Shimano BR-7300, Dura-Ace AXShimano BR-7300, Dura-Ace AXShimano BR-7300, Dura-Ace AXShimano BR-7300, Dura-Ace AX
Design Category Roller CamCable Adjuster
Quick Release NoAttachment Bolt TypeRecessed Allen Key
Cable Attachment BoltFront of Arm MarkingsDura-Ace AX
Back of Arm MarkingsReach CategoryStandard Reach
Min Reach39mmMax Reach51mm
General Information
A very unique design to these brakes which have a similar design to the Campagnolo Delta brake without the nice front cover to hide the workings.  These were meant to be a more aero design than the older center pull and single pivot brakes, but were not known for their stopping power.  Rear Brake: 42-54mm
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Additional Resources
Resources:Reference & ChartsCatalogs
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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