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| Category: | Rear Derailleurs |
| Name: | Shimano RD-A300, 300EX |
| Brand: | Shimano |
| Primary Group: | Exage 300EX |
| Model: | RD-A300 |
| Years: | 1990 - 1999 |
| Country: | Japan |
| Weight: | 268 grams |
| Added By: | Brew on 11/02/07 |
| Updated By: | Guidolol on 01/23/13 |
Additional Photos - click for full size |
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| Outer Plate Markings | 300EX Exage | Inner Plate Markings | Shimano RD-A300 |
| Material | Aluminum Alloy; Composit | Design Category | Slant parallelogram |
| Attachment Bolt Size | 5mm Allen Key | Cable Attachment Bolt Size | 8mm Wrench |
| Shifting Systems | Shimano SIS
Shimano STI
Friction | Cable Adjuster | Yes |
| Cage Length | Short | Max Cog Size | |
| Max Chain Wrap | 28T | | |
| Additional Resources |
| Resources: |  Reference & Charts Catalogs |
| Component Groups |
| Primary Group Name | Brand | Quick Info | Browse Group Components |
| Exage 300EX | Shimano | 1990 - 1999, Sport & Recreation | View 9 Components |
| Details: Exage 300EX group was placed at the lower end of Shimano's Road groups through the 1990's. |
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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