The Shimano BB-UN300 is a high-quality square taper bottom bracket designed for improved performance and stability while cycling. It features a robust construction with premium cartridge bearings that ensure optimal chain stability. This bottom bracket is available in various mounting options, including standard, E-Type, and with chain protection, making it versatile for different setups. The aluminum adapter material provides durability and reliable use. With a shell width of 68 mm and an axle length of 122 mm, the BB-UN300 is designed for BSA frames and allows for easy installation. The combination of functionality and quality makes this bottom bracket an excellent choice for discerning cyclists.
Axis diameter | 4 mm |
Frame compatibility | BSA |
Axis compatibility | Square-taper |
Box width | 68 mm |
Item number | 16207389 |
Manufacturer | Shimano |
Category | Bottom brackets |
Manufacturer no. | EBBUN300EB23X |
Release date | 5.7.2021 |
Colour | Silver |
Exact colour description | Silver/Black |
Bottom bracket design | Bolted bearing shells |
Frame compatibility | BSA |
Axis compatibility | Square-taper |
Box width | 68 mm |
Axis diameter | 4 mm |
Axis length | 122 mm |
Country of origin | France, Germany |
CO₂-Emission | |
Climate contribution |
Axis length | 122 mm |
Weight | 288 g |
Length | 15 cm |
Width | 5.50 cm |
Height | 5 cm |
Weight | 306 g |
Product Safety |
How often does a product of this brand in the «Bottom brackets» category have a defect within the first 24 months?
Source: GalaxusHow many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?
Source: GalaxusHow often is a product of this brand in the «Bottom brackets» category returned?
Source: Galaxus
