BB-UN300 LL113 British 68mm
Simple and reliable square taper bottom bracket
Replaces both BB-UN26 and BB-UN55
Sealed cartridge bearings
- 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
Product Information
Product Information
Shipping & Returns
Shipping & Returns

BB-UN300 LL113 British 68mm
BB-UN300 LL113 British 68mm
Simple and reliable square taper bottom bracket
Replaces both BB-UN26 and BB-UN55
Sealed cartridge bearings
- 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
Original: $15.27
-65%$15.27
$5.34Product 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
- 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















