SHIMANO - Square Type Bottom Bracket - MTB - Chain Case Structure
Square Type Bottom Bracket
- SHIMANO quality/performance cartridge bearing square bottom bracket
- Better chainline stability with chain line stabilizer
- 3 structures available
- Standard, E-type, chain case options
- Adapter material: Aluminum
PRODUCT SPECIFICATIONS
| MODEL NO | BB-UN300-K |
|---|---|
| SERIES | SHIMANO ACERA T3000 Series |
| Remarks | * w/ Crank arm fixing bolts spec. only ** w/ Crank arm fixing bolts spec. is available *** w/ 0.7mm spacer |
| Structure_For chain case | ✔ |
| Axle length/shell width (mm)_117.5_68 (BC1.37) | ✔ |
|---|---|
| Axle length/shell width (mm)_XL118_68 (BC1.37) | X * |
| Axle length/shell width (mm)_D-NL 122_68 (BC1.37) | X ** |
| Axle length/shell width (mm)_D-EL 127_68 (BC1.37) | ✔ |
| Axle length/shell width (mm)_LL123_68 (BC1.37) | X *** |
| Axle length/shell width (mm)_MM110_68 (BC1.37) | ✔ |
| Spindle_Square type | ✔ |