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Shimano BB-UN300

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Product details

The Shimano BB-UN300 bottom bracket is a high-quality and powerful square taper bottom bracket suitable for a variety of bicycle frames. With a shell width of 73 mm and an axle length of 113 mm, it provides a reliable and stable base for the bottom bracket assembly. The bottom bracket features a BSA installation type, allowing for easy installation and maintenance. Made from durable aluminum, it ensures longevity and high performance under various conditions. The BB-UN300 is ideal for cyclists who value quality and reliability, and it is compatible with both standard and E-Type variants. The use of threaded bearing cups provides additional stability and improved power transfer while riding.

  • High-quality square taper bottom bracket for optimal performance
  • Compatible with BSA frames
  • Aluminum construction for durability
  • Easy installation with threaded bearing cups
  • Suitable for standard, E-Type, and chain case variants.

Key specifications

Axis diameter
113 mm
Frame compatibility
BSA
Axis compatibility
Square-taper
Box width
73 mm
Item number
16341848

General information

Manufacturer
Shimano
Category
Bottom brackets
Manufacturer no.
62.78674
Release date
22.4.2022
Sales rank in Category Bottom brackets
32 of 961

Colour

Colour
Black
Exact colour description
Black

Bottom Bracket Features

Bottom bracket design
Bolted bearing shells
Frame compatibility
BSA
Axis compatibility
Square-taper

Mounting

Box width
73 mm
Axis diameter
113 mm
Axis length
113 mm

Origin

Country of origin
Germany

Voluntary climate contribution

CO₂-Emission
Climate contribution

Product dimensions

Axis length
113 mm
Axle diameter
113 mm
Weight
300 g

Package dimensions

Length
14.70 cm
Width
5.70 cm
Height
4.70 cm
Weight
295 g

30-day right of return
24 Months Warranty (Bring-in)

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Bottom brackets» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 1.Shimano
    0.1 %
  • 2.Sram
    0.2 %

Warranty case duration

How 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: Digitec Galaxus
  • Shimano
    Not enough data
  • Sram
    Not enough data

Unfortunately, we don't have enough data for this category yet.

Return rate

How often is a product of this brand in the «Bottom brackets» category returned?

Source: Digitec Galaxus
  • 1.Sram
    3.5 %
  • 2.Shimano
    3.6 %
Source: Digitec Galaxus