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BB-UN300 Bottom Bracket
- Simple and reliable square taper bottom bracket
- Replaces both BB-UN26 and BB-UN55
- Sealed cartridge bearings
- Cr-Mo axle
- For bicycles equipped with a chain case, select BB-UN300-K
- For E-type front derailleur compatibility, choose BB-UN300-E
- Fixing bolts not included; Shimano FC-E6000 bolts suggested
Attributes
| BB Shell Thread | British |
| BB Shell Width | 68mm |
| BB Bearing | Steel |
| Interface | Square |
| Primary Color | Silver |
Product Information
Product Information
Shipping & Returns
Shipping & Returns














BB-UN300 Bottom Bracket
BB-UN300 Bottom Bracket
- Simple and reliable square taper bottom bracket
- Replaces both BB-UN26 and BB-UN55
- Sealed cartridge bearings
- Cr-Mo axle
- For bicycles equipped with a chain case, select BB-UN300-K
- For E-type front derailleur compatibility, choose BB-UN300-E
- Fixing bolts not included; Shimano FC-E6000 bolts suggested
Attributes
| BB Shell Thread | British |
| BB Shell Width | 68mm |
| BB Bearing | Steel |
| Interface | Square |
| Primary Color | Silver |
Select Type
From $6.18
Original: $17.66
-65%BB-UN300 Bottom Bracketā
$17.66
$6.18Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
- Simple and reliable square taper bottom bracket
- Replaces both BB-UN26 and BB-UN55
- Sealed cartridge bearings
- Cr-Mo axle
- For bicycles equipped with a chain case, select BB-UN300-K
- For E-type front derailleur compatibility, choose BB-UN300-E
- Fixing bolts not included; Shimano FC-E6000 bolts suggested
Attributes
| BB Shell Thread | British |
| BB Shell Width | 68mm |
| BB Bearing | Steel |
| Interface | Square |
| Primary Color | Silver |












