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| Category: | Headsets |
| Name: | Shimano HP-1055, 105SC |
| Brand: | Shimano |
| Primary Group: | 105SC |
| Model: | HP-1055 |
| Years: | 1990 - 1999 |
| Country: | Japan |
| Weight: | 101 grams |
| Added By: | JFischer on 10/16/07 |
| Updated By: | andris.82 on 10/22/13 |
Additional Photos - click for full size |
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| Body Material | Aluminum | Upper Bearing Size | 25 - 5/32" |
| Lower Bearing Size | 25 - 5/32" | Crown Race Size | ISO or JIS |
| Upper Cup Markings | Shimano 105 | Lower Cup Markings | Shimano 105 |
Available Threading  | English/ISO/Italian (25.4mm x 24TPI) | Stack Height | 33.5mm |
| Additional Resources |
| Resources: |  Reference & Charts Catalogs |
| Component Groups |
| Primary Group Name | Brand | Quick Info | Browse Group Components |
| 105SC | Shimano | 1990 - 1999, Road Race | View 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 |
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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