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Shimano BB-UN300

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Product details

The Shimano BB-UN300-K square bottom bracket is an essential component for all cycling enthusiasts. Developed by Shimano, a brand known for the quality and performance of its products, this bottom bracket offers the robustness and endurance necessary for adventures on the bike. It is designed to enhance the riding experience and is crafted to fit various frames and cranksets, ensuring effortless installation. The rigid construction allows for efficient power transfer, optimizing the cyclist's efforts.

The notable features of the Shimano BB-UN300-K include:

  • Mounting type: Square axle for extended compatibility.
  • Durability: Made from high-quality materials that guarantee a long lifespan even under intense use.
  • Lightweight: Designed to minimize the overall weight of the bike, which is crucial for performance on the road or off-road.
  • Maintenance-friendly: Well-thought-out bearing systems allow for easy maintenance and access to repairs.

This bottom bracket is ideal for cyclists of all skill levels, whether casual riders or professionals. Its efficiency makes it a smart choice for enhancing the riding experience, whether for leisurely outings or adventurous races. Choosing the Shimano BB-UN300-K means opting for a reliable product that supports cyclists on all their journeys while bringing stability and performance to their gear.

With the Shimano BB-UN300-K bottom bracket, you can ride with full confidence and enjoy every moment on your bike, no matter where your rides take you.

Key specifications

Frame compatibility
BSA
Axis compatibility
Square-taper
Box width
68 mm

General information

Item number
14639496
Manufacturer
Shimano
Category
Bottom brackets
Manufacturer no.
EBBUN300KB10X
Release date
18.1.2021
External links

Colour

Colour
Black
Exact colour description
Black/Silver

Bottom Bracket Features

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

Mounting

Box width
68 mm
Axis length
110 mm

Origin

Country of origin
France

Voluntary climate contribution

CO₂ emissions
3.01 kg
Climate contribution
CHF 0.11

Product dimensions

Axis length
110 mm

Package dimensions

Length
16.90 cm
Width
5.20 cm
Height
4.10 cm
Weight
287 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.Sram
    0.3 %
  • 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
    4 %
  • 2.Sram
    4.1 %
Source: Digitec Galaxus