| Outer Plate Markings | Dura-Ace | Inner Plate Markings | Shimano RD-7401 Japan VIA |
| Material | Aluminum Alloy | Design Category | Slant parallelogram |
| Attachment Bolt Size | 6mm Allen Key | Cable Attachment Bolt Size | 6 mm Allen Key |
| Shifting Systems | Dura-Ace SIS
Dura-Ace STI
Friction | Cable Adjuster | Yes |
| Cage Length | Short | Max Cog Size | 26 |
| Max Chain Wrap | 28T | | |
| Additional Resources |
| Resources: |  Reference & Charts Catalogs |
| Component Groups |
| Primary Group Name | Brand | Quick Info | Browse Group Components |
| Dura-Ace 7400 | Shimano | 1984 - 1995, Road Race | View 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). |
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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