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| Category: | Brakes |
| Name: | Shimano BR-AD20, Adamas AX |
| Brand: | Shimano |
| Primary Group: | Adamas AX |
| Model: | BR-AD20 |
| Years: | 1982 - 1983 |
| Country: | Japan |
| Weight: | 421 grams (avg)
View Weight List |
| Added By: | JFischer on 10/12/07 |
| Updated By: | JFischer on 01/05/10 |
Additional Photos - click for full size |
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Design Category  | Roller Cam | Cable Adjuster | |
| Quick Release | | Attachment Bolt Type | Exterior Nut |
| Cable Attachment Bolt | Wrench | Front of Arm Markings | |
| Back of Arm Markings | | Reach Category | Long Reach; Standard Reach |
| Min Reach | 57mm | Max Reach | 73mm |
| Additional Resources |
| Resources: |  Reference & Charts Catalogs |
| Component Groups |
| Primary Group Name | Brand | Quick Info | Browse Group Components |
| Adamas AX | Shimano | 1982 - 1983, Touring & MTB | View 13 Components |
| Details: Base level of the 'AX' groupsets produced by Shimano, the Adamas group was supposed to be a touring minded group. It ended up being only produced for a few years. |
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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