Shimano BB-UN300 Square Taper BSA Bottom Bracket

Shimano BB-UN300 Square Taper BSA Bottom Bracket
23 reviews
Bottom Bracket Width
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17.23
5.12 discount

  • Free tracked shipping over 99.00€

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Pros & Cons

Pros & Cons

  • This bottom bracket is easy to install yourself.
  • The bearings rotate smoothly and have a good durability.
  • This bottom bracket is on the heavy side.
Read more on what our customers have to say about this product

Specifications

Specifications

Brand
Shimano
Types Screw Thread
BSA
Suitable for
Race / MTB
Crankset axle fit
Square Taper
Bottom Bracket Diameter
33.6-33.9 mm

Reviews

Reviews

4.8 / 5
Average from 23 reviews
5
20 reviews
4
2 reviews
3
1 review
2
0 reviews
1
0 reviews

Most recent reviews

5 / 5

Excellent

- Ivan 4 November 2024

Everything according to the offer

Pros & Cons

Extremely fast delivery

5 / 5

Just an excellent bottom bracket bearing

- Joris 28 September 2024

Quality bottom bracket bearing. Used this on an Alpina children's bike. Much better bottom bracket bearing than was originally on the bike.

Pros & Cons

Affordable
Good quality
Nice finish
Vague manual
Automatic translation

5 / 5

good price/quality

- Arjo van Dalen 6 September 2024

This bottom bracket was easy to install and I like it very much. Good replacement for a worn-out bottom bracket.

Pros & Cons

easy to install
good price/quality
Automatic translation

5 / 5

Fast delivery as always

- M. 6 August 2024

Meets fine for a city bike

Pros & Cons

Does what it needs to do
Special tool needed for installation
Automatic translation

5 / 5

Top quality bottom bracket.

- Eric 1 August 2024

The bottom bracket arrived perfectly packaged and was then fitted by me to the mtb. This went effortlessly as it is custom-made...solid quality. Runs like clockwork and am happy with it!

Pros & Cons

Does its job
Fits exactly
Quality brand
No
None
Automatic translation

5

Ivan, 4 November 2024

Excellent

Everything according to the offer

  • Extremely fast delivery

5

Joris, 28 September 2024

Just an excellent bottom bracket bearing

Quality bottom bracket bearing. Used this on an Alpina children's bike. Much better bottom bracket bearing than was originally on the bike.

  • Affordable
  • Good quality
  • Nice finish
  • Vague manual
Automatic translation

5

Arjo van Dalen, 6 September 2024

good price/quality

This bottom bracket was easy to install and I like it very much. Good replacement for a worn-out bottom bracket.

  • easy to install
  • good price/quality
Automatic translation

5

M., 6 August 2024

Fast delivery as always

Meets fine for a city bike

  • Does what it needs to do
  • Special tool needed for installation
Automatic translation

5

Eric, 1 August 2024

Top quality bottom bracket.

The bottom bracket arrived perfectly packaged and was then fitted by me to the mtb. This went effortlessly as it is custom-made...solid quality. Runs like clockwork and am happy with it!

  • Does its job
  • Fits exactly
  • Quality brand
  • No
  • None
Automatic translation

Recommended by the product specialist

Recommended by the product specialist


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Shimano BB-UN300 Gazelle JIS 128mm BB Sunrace BSA 68/122mm Steel
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23 reviews 0 reviews 1 review
Types Screw Thread BSA BSA
Suitable for Race / MTB
Crankset axle fit Square Taper Square Taper Square Taper
Bottom Bracket Width 68 / 110 mm / 68 / 118 mm / 68 / 113 mm / 68 / 122.5 mm / 68 / 127 mm / 73 / 118 mm / 73 / 122,5 mm / 73 / 113 mm 68 / 122 mm
Bottom Bracket Diameter 33.6-33.9 mm 30 mm
- Yes / No
17.23 20.28 13.16
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