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Shimano BB-UN300

54Ratings
BrandMore from Shimano
Delivered between Tue, 1.9. and Wed, 2.9.
More than 10 pieces in stock at supplier
Free shipping starting at 50.–

Colour9

Product details

The Shimano BB-UN300 is a high-quality square taper bottom bracket designed for improved performance and stability while cycling. It features a robust construction with high-quality cartridge bearings that ensure optimal chain stability. This bottom bracket is available in various mounting options, including standard, E-Type, and with chain guard, making it versatile for different setups. The aluminum adapter material ensures durable and reliable use. With a shell width of 68 mm and an axle length of 122 mm, the BB-UN300 is designed for BSA frames and offers easy installation. The combination of functionality and quality makes this bottom bracket an excellent choice for demanding cyclists.

  • High-quality cartridge bearings for improved performance
  • Available mounting types: Standard, E-Type, and chain guard
  • Robust aluminum construction for durability
  • Optimal chain stability through integrated stabilizer.

Key specifications

Frame compatibility
BSA
Axis compatibility
Square-taper
Box width
68 mm
Axis length
122 mm
Weight
288 g

General information

Item number
16207389
Manufacturer
Shimano
Category
Bottom brackets
Manufacturer No.
EBBUN300EB23X
Release date
5.7.2021
Sales rank in Category Bottom brackets
77 of 1696
External links
Manufacturer's site (de)

Colour

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

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, Germany

Voluntary climate contribution

CO₂ emissions
1.2 kg
Climate contribution
CHF 0.11

Product dimensions

Axis length
122 mm
Weight
288 g

Package dimensions

Length
15 cm
Width
5.50 cm
Height
5 cm
Weight
306 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
    0.4 %
  • 2.Shimano
    0.5 %

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
    3.8 %
  • 2.Sram
    4.1 %
Source: Digitec Galaxus