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Shimano BB-UN300

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Product details

The Shimano BB-UN300 is a high-quality bottom bracket designed for improved performance and stability while cycling. It features a sturdy square axle and is equipped with high-quality cartridge bearings that ensure smooth operation. This bottom bracket is available in various mounting types, including standard, E-Type, and chain guard options, making it versatile and adaptable for different bike frames. The use of aluminum for the adapter material provides high strength and durability. With a shell width of 68 mm and an axle length of 118 mm, the BB-UN300 is ideal for many common bike models. It offers easy installation and is suitable for self-installation, making it a practical choice for cycling enthusiasts.

  • High-quality cartridge bearings for improved performance
  • Various mounting types: standard, E-Type, and chain guard
  • Sturdy square axle for increased stability
  • Aluminum adapter material for durability.

Key specifications

Axis diameter
118 mm
Frame compatibility
BSA
Axis compatibility
Square-taper
Box width
68 mm
Item number
15840669

General information

Manufacturer
Shimano
Category
Bottom brackets
Manufacturer no.
62.78678
Release date
14.5.2021
Sales rank in Category Bottom brackets
4 of 1358

Colour

Colour
Silver
Exact colour description
Silver

Bottom Bracket Features

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

Mounting

Box width
68 mm
Axis diameter
118 mm
Axis length
118 mm

Origin

Country of origin
France

Voluntary climate contribution

CO₂-Emission
Climate contribution

Product dimensions

Axis length
107 mm
Axle diameter
118 mm
Weight
275 g

Package dimensions

Length
15.40 cm
Width
6.40 cm
Height
4.60 cm
Weight
282 g

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

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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
    0.2 %
  • 2.Sram
    0.3 %

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
  • 1.Shimano
    0 days
  • Sram
    Not enough data

Return rate

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

Source: Digitec Galaxus
  • 1.Sram
    3.1 %
  • 2.Shimano
    3.7 %
Source: Digitec Galaxus