This Shimano BB-UN300 bottom bracket is a solid and smooth-running square taper bottom bracket. You can easily mount the matching crank on it and it has a good durability. High quality and performance This Shimano BB-UN300 square axle bottom bracket in the Alivio range has a very strong and durable design, allowing you to transfer power to your wheels with as little resistance as possible. The axle is made of steel and the bearings are well sealed. This makes this bottom bracket durable and low-maintenance!
This Shimano BB-UN300 bottom bracket is a solid and smooth-running square taper bottom bracket. You can easily mount the matching crank on it and it has a good durability. High quality and performance This Shimano BB-UN300 square axle bottom bracket in the Alivio range has a very strong and durable design, allowing you to transfer power to your wheels with as little resistance as possible. The axle is made of steel and the bearings are well sealed. This makes this bottom bracket durable and low-maintenance!
in 71 offers
This Shimano BB-UN300 bottom bracket is a solid and smooth-running square taper bottom bracket. You can easily mount the matching crank on it and it has a good durability. High quality and performance This Shimano BB-UN300 square axle bottom bracket in the Alivio range has a very strong and durable design, allowing you to transfer power to your wheels with as little resistance as possible. The axle is made of steel and the bearings are well sealed. This makes this bottom bracket durable and low-maintenance!
This Shimano BB-UN300 bottom bracket is a solid and smooth-running square taper bottom bracket. You can easily mount the matching crank on it and it has a good durability. High quality and performance This Shimano BB-UN300 square axle bottom bracket in the Alivio range has a very strong and durable design, allowing you to transfer power to your wheels with as little resistance as possible. The axle is made of steel and the bearings are well sealed. This makes this bottom bracket durable and low-maintenance!
Size
Last updated at 06/11/2025 00:02:28
Shimano Square Type Bottom Bracket 68 x 122.5mm w-o Bolts - BB - UN300
Delivery between 8–18 Nov $12.94
Shimano BB-UN300 English 68x118mm Bottom Bracket in Black/Silver
Delivery $15
Shimano BB-UN300 BSA square bottom bracket Version 68 x 122.5 mm
Delivery between Fri – Mon $42.63
Shimano Bb-Un300 Bottom Bracket 73x122mm w/Fixing Bolt
Delivery between 6–13 Nov $9.99
Shimano BB-UN300 Taper MTB Bottom Bracket British Thread 68mm / 113mm
Free delivery
Shimano BB-UN300 Taper MTB Bottom Bracket British Thread 68mm / 110mm
Delivery $10
Shimano Bottom Bracket, BB-UN300, Square Taper, BSA Threaded - 68x107mm
Delivery between 11–17 Nov $10
Shimano UN300 Square Tapered Bottom Bracket - Silver / English (BSA) / 68 - 110
Delivery $45.37
Shimano UN300 Square Taper Bottom Bracket 68 x 122.5mm
Delivery between 11–13 Nov $9.90
See 24 historical offers
Bottom Bracket Shimano BB-UN300 68x127.5mm (Crank bolts NOT included)
Delivery $15.64
Shimano Shimano, Cartridge Bottom Bracket Set BB-UN300-K, Spindle: Square-type , Shell: BSA 68mm, Spindle: 110mm, w/o Fixing Bolt
Delivery $69.45
Shimano Bottom Bracket Square taper BB-UN300 (w/o fixing bolts) - 68x110mm
Shimano Euro BB Square Taper (115mm)
Delivery between Wed – Mon $10
Shimano BB-UN300 Bottom Bracket - English, 68 x 122.5mm Spindle [MPN: EBBUN300B22X]
Shimano Bb-UN300 Taper Mtb Bottom Bracket British Thread 68mm / 113mm 68mm Bottom Brackets
Free delivery
SHIMANO Bottom Bracket 68BSA EBBUN300B23X BB-UN300 122.5mm (LL123)
Free delivery
Shimano BB-UN300 bottom bracket British thread 68 - 127.5 mm
Delivery $12.22
Shimano UN300 BSA 68 Bottom Bracket
Delivery between Mon – Tue $15.09
| Collect | 29 Everyday Rewards points |
| Shimano Series | Nexis Inter-3 |
| Thread | English Thread |
| Frame Width | 68mm |
| Bottom Bracket Length | 122.5mm |
Shimano Square Type Bottom Bracket 68 x 122.5mm w-o Bolts - BB - UN300
Delivery between 8–18 Nov $12.94
Shimano BB-UN300 English 68x118mm Bottom Bracket in Black/Silver
Delivery $15
Shimano BB-UN300 68x123mm Bottom Bracket
Delivery between Fri – Wed $9.90
Shimano BB-UN300 BSA square bottom bracket Version 68 x 122.5 mm
Delivery between Fri – Mon $42.63
Shimano Bb-Un300 Bottom Bracket 73x122mm w/Fixing Bolt
Delivery between 6–13 Nov $9.99
See 24 historical offers
Shimano BB-UN300 73x122mm Bottom Bracket
Shimano Bottom Bracket UN300 73 x 113 LL w/o Fixing Bolts
Bottom Bracket Shimano BB-UN300 68x127.5mm (Crank bolts NOT included)
Delivery $15.64
Shimano Shimano BB-UN300 BOTTOM BRACKET
Delivery $9.99
Shimano Shimano, Cartridge Bottom Bracket Set BB-UN300-K, Spindle: Square-type , Shell: BSA 68mm, Spindle: 110mm, w/o Fixing Bolt
Delivery $69.45
Shimano BB-UN300 Bottom Bracket
Free delivery between 5–11 Nov
Miniklio velenas Shimano BB-UN300 BSA 68mm 110 mm
Shimano Bottom Bracket Square taper BB-UN300 (w/o fixing bolts) - 68x110mm
Shimano Euro BB Square Taper (115mm)
Delivery between Wed – Mon $10
Shimano BB-UN300 Bottom Bracket - English, 68 x 122.5mm Spindle [MPN: EBBUN300B22X]
Shimano Bb-un300 Square Taper Bottom Bracket
Delivery $15
Shimano UN300 Square Taper Bottom Bracket
Delivery $15
Bottom Bracket Shimano BB-UN300 BSA 68mm 117.5mm/68mm
Delivery $30.22
Movimento Pedaleiro Bsa 73-113MM
Delivery $10.91
Shimano Bb-UN300 Taper Mtb Bottom Bracket British Thread 68mm / 113mm 68mm Bottom Brackets
Free delivery
SHIMANO Bottom Bracket 68BSA EBBUN300B23X BB-UN300 122.5mm (LL123)
Free delivery
OS POGONA SHIMANO BB UN300 BSA 68mm 127,5
Shimano BB-UN300 bottom bracket British thread 68 - 127.5 mm
Delivery $12.22
Shimano UN300 BSA 68 Bottom Bracket
Delivery between Mon – Tue $15.09
| Collect | 29 Everyday Rewards points |
| Shimano Series | Nexis Inter-3 |
| Thread | English Thread |
| Frame Width | 68mm |
| Bottom Bracket Length | 122.5mm |
