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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 reliable performance in various bicycle frames. With a shell width of 68 mm and an axle length of 115 mm, this bottom bracket provides an optimal fit for BSA-compatible frames. The bottom bracket features a square taper interface that allows for easy installation and removal. Made from durable aluminum, the BB-UN300 ensures a long lifespan and high stability, even under demanding conditions. The threaded bearing cups provide secure and precise alignment, contributing to improved power transfer and a smooth riding experience. This bottom bracket is an excellent choice for cyclists who value quality and performance.

  • Compatible with BSA frames for versatile applications
  • Robust aluminum construction for durability
  • Easy installation with square taper interface
  • Threaded bearing cups for precise alignment and improved power transfer.

Key specifications

Axis diameter
115 mm
Frame compatibility
BSA
Axis compatibility
Square-taper
Box width
68 mm
Item number
15722877

General information

Manufacturer
Shimano
Category
Bottom brackets
Manufacturer no.
62.78677
Release date
22-4-2021

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
115 mm
Axis length
107 mm

Origin

Country of origin
Germany

Voluntary climate contribution

CO₂-Emission
Climate contribution

Product dimensions

Axis length
115 mm
Axle diameter
115 mm

Package dimensions

Length
17 cm
Width
4 cm
Height
4 cm
Weight
270 g

Legal Notice

Product Safety

14-day cancellation right
30-day right of return
24 Months statutory warranty

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Reviews & Ratings

Statutory warranty score

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

Source: Galaxus
  • 1.Shimano
    0,2 %
  • 1.Sram
    0,2 %

Statutory 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: 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: Galaxus
  • 1.Sram
    3,4 %
  • 2.Shimano
    3,7 %
Source: Galaxus