The Shimano BB-UN300 is a high-quality bottom bracket designed for reliable performance across various types of bicycles. With a shell width of 73 mm and an axle length of 118 mm, this bottom bracket offers an optimal fit for BSA frames. It features a square taper interface that allows for easy installation and removal. The bottom bracket is made from durable aluminum, which not only enhances longevity but also reduces the overall weight of the bike. The threaded bearing cups ensure a stable and secure connection, providing smooth power transfer while pedaling. The Shimano BB-UN300 is therefore an excellent choice for cyclists who value quality and performance.
Axis diameter | 118 mm |
Frame compatibility | BSA |
Axis compatibility | Square-taper |
Box width | 73 mm |
Item number | 16341849 |
Manufacturer | Shimano |
Category | Bottom brackets |
Manufacturer no. | 62.79035 |
Release date | 30.7.2021 |
Colour | Black |
Exact colour description | Black |
Bottom bracket design | Bolted bearing shells |
Frame compatibility | BSA |
Axis compatibility | Square-taper |
Box width | 73 mm |
Axis diameter | 118 mm |
Axis length | 113 mm |
Country of origin | France, Germany |
CO₂-Emission | |
Climate contribution |
Axis length | 113 mm |
Axle diameter | 118 mm |
Length | 13.60 cm |
Width | 4.90 cm |
Height | 4.40 cm |
Weight | 302 g |
Product Safety |
How often does a product of this brand in the «Bottom brackets» category have a defect within the first 24 months?
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