Shimano FC-S125, 105 Golden Arrow
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Category:  Cranksets
Name:  Shimano FC-S125, 105 Golden Arrow
Brand:  Shimano
Primary Group:  105 Golden Arrow
Model:  FC-S125
Years:  1983 - 1986
Country:  Japan
Weight:  637 grams (avg)
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Added By: JFischer on 07/26/07
Updated By: James_D on 05/11/18
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Shimano FC-S125, 105 Golden ArrowShimano FC-S125, 105 Golden ArrowShimano FC-S125, 105 Golden ArrowShimano FC-S125, 105 Golden ArrowShimano FC-S125, 105 Golden ArrowShimano FC-S125, 105 Golden ArrowShimano FC-S125, 105 Golden ArrowShimano FC-S125, 105 Golden ArrowShimano FC-S125, 105 Golden ArrowShimano FC-S125, 105 Golden ArrowShimano FC-S125, 105 Golden ArrowShimano FC-S125, 105 Golden ArrowShimano FC-S125, 105 Golden Arrow
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Chainring CountDoubleBCD 130mm
BB StyleSquare Taper (JIS)Pedal Threads9/16" x 20 (English)
BB Length 119mm english, 122mm italianFlutes None
Lengths 165; 170Arm/Spider MaterialAluminum Alloy
Front MarkingsShimano [Golden Arrow]Back MarkingsShimano Forged 170 Japan on crank arm, VIA and FC-S125 on spider arms.
Extractor Threading 22x1mm (Standard)  
General Information

One of three variations of the Shimano 105 Golden Arrow crankset.  This is the two piece "calking" crankset.  The drive side crank was made from two seperate pieces, the crank arm being fit to the spider.  One of the photos in listing shows that these two pieces were indeed seperate pieces.  There was also a one-piece constructed version of this smooth style crank, model number FC-S105.  The other version has some fluting on crank & spider, model number currently unknown, however it has a striking similarity in appearance to the FC-6200 crankset.

Cold Forged crank arms, came stock with a 52/42 set of chain rings.  Orginal spec BB was the BB-3P11 for english threading, BB-5N11 for italian.
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The catalog (on velo-pages.com) gives the BB as 32-52-35 i.e. 119mm with 3mm overhang, so the modern symmetrical equivalent BB is 122mm.
Note the FC-A105 uses a different BB.  - Simonius

Quality:Rarity:
 
 
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Component VariationsView Detailed List  Manage Variations
Variations of Component exist (Component is 1 of 2)BrandGroup
Shimano FC-S105, 105 Golden Arrow (Fluted)Shimano105 Golden Arrow
Component Groups
Primary Group NameBrandQuick InfoBrowse Group Components
105 Golden ArrowShimano1983 - 1986, Road RaceView 14 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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WeightSourceNotesAdded By
618 GramsUnknown JFischer
656 GramsActual170mm, 52/42T, no crank bolts Simonius Titius
Ambrosio
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