The Shimano BB-UN300 is a high-quality bottom bracket designed for bicycles with BSA threads. It features a robust and powerful square axle that ensures a stable chain line. With a shell width of 68 mm and an axle length of 123 mm, this bottom bracket is ideal for various applications, including trekking bikes. The aluminum adapter material provides durable and reliable performance. The design with screwed bearing cups allows for easy installation and maintenance. The BB-UN300 is available in various versions, including standard, E-Type, and chain guard variants, making it a flexible choice for different bike configurations.
Axis diameter | 123 mm |
Frame compatibility | BSA |
Axis compatibility | Square-taper |
Box width | 68 mm |
Item number | 15974315 |
Manufacturer | Shimano |
Category | Bottom brackets |
Manufacturer no. | 62.78669 |
Release date | 20.4.2022 |
Colour | Silver |
Exact colour description | Black |
Bottom bracket design | Bolted bearing shells |
Frame compatibility | BSA |
Axis compatibility | Square-taper |
Box width | 68 mm |
Axis diameter | 123 mm |
Axis length | 123 mm |
Country of origin | France, Germany |
CO₂-Emission | |
Climate contribution |
Axis length | 123 mm |
Axle diameter | 123 mm |
Weight | 304 g |
Length | 16.20 cm |
Width | 4.90 cm |
Height | 4.30 cm |
Weight | 300 g |
Product Safety |
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