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Shimano BB-UN300

54Ratings
BrandMore from Shimano
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Product details

The Shimano BB-UN300 bottom bracket is a high-quality and high-performance square taper bottom bracket suitable for a variety of bicycles. With a shell width of 68 mm and a spindle length of 122.5 mm, it provides a reliable and stable foundation for the bottom bracket setup. The bottom bracket features a BSA installation type, allowing for easy installation and maintenance. The use of aluminum as the adapter material ensures high strength and durability, while the square taper design guarantees precise power transfer. This bottom bracket is ideal for cyclists who value quality and performance and are looking for a reliable solution for their bicycle requirements.

High-quality square taper bottom bracket for enhanced performance. Compatible with BSA frames for easy installation. Aluminum adapter for increased strength and durability. Suitable for standard, E-type, and chaincase variants. Screw-in bearing cups for easy maintenance.

Key specifications

Frame compatibility
BSA
Axis compatibility
Square-taper
Box width
68 mm
Axis length
122.50 mm
Weight
305 g

General information

Item number
15729786
Manufacturer
Shimano
Category
Bottom brackets
Manufacturer No.
62.78665
Release date
20.4.2022
Sales rank in Category Bottom brackets
14 of 1695

Colour

Colour
Black, Grey, Silver
Exact colour description
Black, Black/Silver, Grey, Silver

Bottom Bracket Features

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

Mounting

Box width
68 mm
Axis length
122 mm

Origin

Country of origin
France, Indonesia

Voluntary climate contribution

CO₂ emissions
1.27 kg
Climate contribution
CHF 0.11

Product dimensions

Axis length
122.50 mm
Weight
305 g

Package dimensions

Length
17 cm
Width
4.50 cm
Height
4.50 cm
Weight
306 g

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

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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.Sram
    0.2 %
  • 2.Shimano
    0.4 %

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.Shimano
    3.9 %
  • 2.Sram
    4 %
Source: Digitec Galaxus