Shimano BB-UN300 Bottom Bracket (Length: 68 x 113mm)
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!
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 18 offers
The lowest price for Shimano BB-UN300 Bottom Bracket (Length: 68 x 113mm) right now is $19.99 at George's Bike Shop, compared across 17 retailers.
The all-time low was $17.84 on 31 July 2025 — today's price is 12% above the lowest ever. That's a little above the best price we've seen.
Prices last updated 8 June 2026.
Last updated at 08/06/2026 18:51:25
Shimano BB-UN300 Vierkant-Innenlager // BSA 68x113 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 Bottom Bracket 68 x 113mm
Delivery between 9–19 June $12.95
Shimano Bottom Bracket BB-UN300 68 x 113mm
Delivery $14.95
Shimano BB-UN300 Bottom Bracket - 68MM-113mm
Delivery between 12–22 June $9.95
Shimano BB-UN300 Bottom Bracket - 68MM-113mm
Delivery between 12–16 June $9.95
Shimano BB-UN300 68x113mm Square Type MTB Bottom Bracket
Delivery between Wed – Mon $9.90
Bb-Un300 Bottom Bracket 68X113Mm Ll W/O Fixing Bolts
Delivery between 12–22 June $9.95
Shimano BB-UN300 Square Taper Bottom Bracket 68x113mm
Delivery between 13–16 June $9.90
Shimano BB-UN300 Taper MTB Bottom Bracket British Thread 68mm / 113mm
Free delivery
Shimano UN300 Square Taper Bottom Bracket - Size 68 x 113mm
Free delivery between Wed – Thu
| Collect | 29 Everyday Rewards points |
| Shimano Series | Nexis Inter-3 |
| Thread | English Thread |
| Frame Width | 68mm |
| Bottom Bracket Length | 113mm |
Shimano BB-UN300 Vierkant-Innenlager // BSA 68x113 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 Bottom Bracket 68 x 113mm
Delivery between 9–19 June $12.95
Shimano Bottom Bracket BB-UN300 68 x 113mm
Delivery $14.95
Shimano BB-UN300 Bottom Bracket - 68MM-113mm
Delivery between 12–22 June $9.95
Shimano BB-UN300 Bottom Bracket - 68MM-113mm
Delivery between 12–16 June $9.95
| Collect | 29 Everyday Rewards points |
| Shimano Series | Nexis Inter-3 |
| Thread | English Thread |
| Frame Width | 68mm |
| Bottom Bracket Length | 113mm |
