Shimano BB-7400, Dura-Ace
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Category:  Bottom Brackets
Name:  Shimano BB-7400, Dura-Ace
Brand:  Shimano
Primary Group:  Dura-Ace 7400
Model:  BB-7400
Years:  1985 - 1992
Country:  Japan
Weight:  309.5 grams (avg)
View Weight List
Added By: JFischer on 10/12/07
Updated By: onespeedbiker on 06/22/14
Additional Photos - click for full size
Shimano BB-7400, Dura-AceShimano BB-7400, Dura-AceShimano BB-7400, Dura-AceShimano BB-7400, Dura-Ace
Bearing Size/Count per side1/4" / 11x11Spindle MarkingsShimano Dura Ace [68]-W BB-7400
Fixed Cup MarkingsShimano Japan [threading] BB-7400Adjustable Cup MarkingsShimano Japan [threading] BB-7400
Spindle StyleSquare Taper Shimano JIS Low ProfileAxle MaterialSteel
Available ThreadingsEnglish/ISO: 1.370 x 24;
Italian: 36mm x 24
Length(s)112mm English; 113mm Italian
Tools NeededSpanner, Locknut Wrench and Fixed Cup Wrench  
General Information
 
Quality:Rarity:
 
 
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Additional Resources
Resources:Reference & ChartsCatalogs
Component Groups
Primary Group NameBrandQuick InfoBrowse Group Components
Dura-Ace 7400Shimano1984 - 1995, Road RaceView 41 Components
Details:  

Shimano's top of the line race quality component group in the mid 80's through the early 90's. The 7400 series Dura-Ace group saw several interations including the introduction of 6 then 7 and finally 8 speed SIS shifting. Eventually upgraded with 7410 parts before finally being completely replaced with 7700.

Dura-Ace was developed to give the professional racing cyclist a fraction-of-a-second advantage that can spell the difference between victory and defeat. Advanced functions like 8 speed SIS, Super SLR brakes and Shimano Total Integration provide the most refined feeling of control available in a group today. Ultra high-precision mechanisms, quality materials and rugged construction assure that Dura-Ace takes all the punishment that pro-level road racing can dish out. (1991 Dealer Manual).

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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WeightSourceNotesAdded By
320 GramsUnknown JFischer
299 GramsUnknown Peddie
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