SHIMANO NEXUS - Cartridge Bottom Bracket - For Chain Case
The SHIMANO UN26 bottom bracket offers smooth rotation for square taper cranks.
PRODUCT SPECIFICATIONS
| MODEL NO | BB-UN26-K |
|---|---|
| SERIES | SHIMANO ALIVIO M4000 Series |
| Remarks | * w/ Fixing bolts |
| Structure|For chain case | ✔ |
| Spindle|Square type | ✔ |
|---|---|
| Axle length/shell width (mm)|MM110|68 (BC1.37) | ✔ |
| Axle length/shell width (mm)|YL117|68 (BC1.37) | X* (chainline: 47.5) |
| Axle length/shell width (mm)|117.5|68 (BC1.37) | ✔ |
| Axle length/shell width (mm)|D-NL 122|68 (BC1.37) | X* |
| Axle length/shell width (mm)|LL123|68 (BC1.37) | X (t=1.8) |