Shimano BB-UN300 Bottom Bracket (Length: 68 x 110mm)
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.
in 19 offers
The lowest price for Shimano BB-UN300 Bottom Bracket (Length: 68 x 110mm) right now is $18.54 at Lordgun.com.au, compared across 19 retailers.
The all-time low was $17.60 on 31 July 2025 — today's price is 5% above the lowest ever. This is at or near its all-time low — a good time to buy.
Prices last updated 6 July 2026.
Last updated at 06/07/2026 09:24:08
Shimano BB-UN300 BSA square bottom bracket Version 68 x 110 mm
Delivery between Tue – Wed $41.31
Shimano BB-UN300 68x110mm Square Type MTB Bottom Bracket
Delivery between 8–13 July $9.90
Shimano BB-UN300 Bottom Bracket 68x110mm Without Fixing Bolts
Delivery between Wed – Sat $9.99
Shimano Bb-un300 Bottom Bracket 68x110mm W/o Fixing Bolts
Delivery between 9–17 July $9.95
Shimano Shimano UN300 68 x 110 Bottom Bracket
Delivery between 10–17 July $15
Shimano BB-UN300 BOTTOM BRACKET 68x110mm W/O FIXING BOLTS
Shimano BB-UN300 Taper MTB Bottom Bracket British Thread 68mm / 110mm
Free delivery
Shimano BB-UN300 Taper MTB Bottom Bracket British Thread 68mm / 110mm
Delivery $10
Shimano UN300 Square Taper Bottom Bracket - 68 x 110mm
Shimano Square Taper Bottom Bracket 68 x 110mm
Delivery between 11–14 July $9.90
| Earn | 3x points |
| and collect | 87 Everyday Rewards points |
| Shimano Series | Nexis Inter-3 |
| Thread | English Thread |
| Frame Width | 68mm |
Shimano BB-UN300 BSA square bottom bracket Version 68 x 110 mm
Delivery between Tue – Wed $41.31
Shimano BB-UN300 68x110mm Square Type MTB Bottom Bracket
Delivery between 8–13 July $9.90
Shimano BB-UN300 Bottom Bracket 68x110mm Without Fixing Bolts
Delivery between Wed – Sat $9.99
Shimano Bb-un300 Bottom Bracket 68x110mm W/o Fixing Bolts
Delivery between 9–17 July $9.95
Shimano Shimano UN300 68 x 110 Bottom Bracket
Delivery between 10–17 July $15
| Earn | 3x points |
| and collect | 87 Everyday Rewards points |
| Shimano Series | Nexis Inter-3 |
| Thread | English Thread |
| Frame Width | 68mm |
