Shimano FC-1057, 105SC (triple)
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Category:  Cranksets
Name:  Shimano FC-1057, 105SC (triple)
Brand:  Shimano
Primary Group:  105SC
Model:  FC-1057
Years:  Early 1990's - ?
Country:  Japan
Weight:  745 grams (Actual)
Added By: JFischer on 08/02/09
Updated By: andris.82 on 08/19/13
Additional Photos - click for full size
Shimano FC-1057, 105SC (triple)Shimano FC-1057, 105SC (triple)Shimano FC-1057, 105SC (triple)Shimano FC-1057, 105SC (triple)Shimano FC-1057, 105SC (triple)Shimano FC-1057, 105SC (triple)Shimano FC-1057, 105SC (triple)
Chainring CountTripleBCD 130mm
BB StyleSquare Taper (JIS)Pedal Threads9/16" x 20 (English)
BB Length 118mmFlutes None
Lengths 170Arm/Spider MaterialAluminum Alloy
Front MarkingsShimano 105Back MarkingsShimano FC-1057 VIA Japan
Extractor Threading 22x1mm (Standard)  
General Information
Triple version of the FC-1055 crankset.  Smallest ring set on a smaller BCD than the outer two rings.  BCD of the inner ring unknown, but likely the Shimano standard of the time.
Quality:Rarity:
 
 
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Additional Resources
Resources:Reference & ChartsCatalogsGear Calculator
Component VariationsView Detailed List  Manage Variations
Variations of Component exist (Component is 1 of 3)BrandGroup
Shimano FC-1055, 105SCShimano105SC
Shimano FC-1056, 105SCShimano105SC
Component Groups
Primary Group NameBrandQuick InfoBrowse Group Components
105SCShimano1990 - 1999, Road RaceView 23 Components
Details:  in 1990 Shimano 105 was renamed to 105SC group. When the group received a makeover moving away from the polished aluminum finish to a painted silver finish. It would retain 7 Speed as it was introduced a year before with the 1051 group.  Dual pivot brakes were also introduced at the time. Before its demise in 1998 105SC would receive 8 Speed cassettes and STI shifters.

It was replaced with 9 Speed 105 (5500 Series) in 1999
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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