The BB-UN300 square taper bottom bracket was launched by Shimano as successor of the models BB-UN26 and BB-UN55. It covers a wide range of applications, from Touring and City bikes to older Road and Mountain bikes. BB-UN300 is available with BSA thread and in different axle lengths. In this type, the bottom bracket axle and crank are connected by a square taper. Does not include crank bolts. About ShimanoEstablished in Japan in 1921, Shimano is the worlds largest bicycle component manufacturer. Whether it be drive systems, brakes, pedals or shoes, Shimano stands for reliable quality and performance. From Road & Gravel to Mountain, Touring & Urban use, Mechanical or Electric.
The BB-UN300 square taper bottom bracket was launched by Shimano as successor of the models BB-UN26 and BB-UN55. It covers a wide range of applications, from Touring and City bikes to older Road and Mountain bikes. BB-UN300 is available with BSA thread and in different axle lengths. In this type, the bottom bracket axle and crank are connected by a square taper. Does not include crank bolts. About ShimanoEstablished in Japan in 1921, Shimano is the worlds largest bicycle component manufacturer. Whether it be drive systems, brakes, pedals or shoes, Shimano stands for reliable quality and performance. From Road & Gravel to Mountain, Touring & Urban use, Mechanical or Electric.
The BB-UN300 square taper bottom bracket was launched by Shimano as successor of the models BB-UN26 and BB-UN55. It covers a wide range of applications, from Touring and City bikes to older Road and Mountain bikes. BB-UN300 is available with BSA thread and in different axle lengths. In this type, the bottom bracket axle and crank are connected by a square taper. Does not include crank bolts. About ShimanoEstablished in Japan in 1921, Shimano is the worlds largest bicycle component manufacturer. Whether it be drive systems, brakes, pedals or shoes, Shimano stands for reliable quality and performance. From Road & Gravel to Mountain, Touring & Urban use, Mechanical or Electric.
The BB-UN300 square taper bottom bracket was launched by Shimano as successor of the models BB-UN26 and BB-UN55. It covers a wide range of applications, from Touring and City bikes to older Road and Mountain bikes. BB-UN300 is available with BSA thread and in different axle lengths. In this type, the bottom bracket axle and crank are connected by a square taper. Does not include crank bolts. About ShimanoEstablished in Japan in 1921, Shimano is the worlds largest bicycle component manufacturer. Whether it be drive systems, brakes, pedals or shoes, Shimano stands for reliable quality and performance. From Road & Gravel to Mountain, Touring & Urban use, Mechanical or Electric.
Last updated at 05/15/2026 06:26:58
Shimano BB-UN300 Vierkant-Innenlager // BSA 68x110 mm (Alivio)
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Shimano BB-UN300 BSA square bottom bracket Version 68 x 110 mm
Delivery between Mon – Tue $40.69
Shimano Bb-un300 68x110mm Square Type Mtb Bottom Bracket
Delivery $9.90
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Shimano BB-UN300 68x110mm Square Type MTB Bottom Bracket
Delivery between Tue – Thu $9.90
Shimano BB-UN300 Bottom Bracket 68x110mm Without Fixing Bolts
14-day returns
Shimano BB-UN300 Bottom Bracket 68x110mm Without Fixing Bolts
Delivery between 18–25 May $9.99
Shimano Bb-un300 Bottom Bracket 68x110mm W/o Fixing Bolts
Delivery between 19–27 May $9.95
Shimano BB-UN300 BSA Bottom Bracket 68-110
Delivery $227.00
Shimano Shimano UN300 68 x 110 Bottom Bracket
Delivery between 20–27 May $15
Shimano BB-UN300 bottom bracket British thread 68 - 110 mm
Delivery $11.15
| Earn | 3x points |
| and collect | 87 Everyday Rewards points |
| Shimano Series | Nexis Inter-3 |
| Thread | English Thread |
| Frame Width | 68mm |
Shimano BB-UN300 Vierkant-Innenlager // BSA 68x110 mm (Alivio)
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Shimano BB-UN300 BSA square bottom bracket Version 68 x 110 mm
Delivery between Mon – Tue $40.69
Shimano Bb-un300 68x110mm Square Type Mtb Bottom Bracket
Delivery $9.90
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Shimano BB-UN300 68x110mm Square Type MTB Bottom Bracket
Delivery between Tue – Thu $9.90
Shimano BB-UN300 Bottom Bracket 68x110mm Without Fixing Bolts
14-day returns
| Earn | 3x points |
| and collect | 87 Everyday Rewards points |
| Shimano Series | Nexis Inter-3 |
| Thread | English Thread |
| Frame Width | 68mm |
