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Shimano UN54 Bottom Bracket

Shimano UN54 Bottom Bracket

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This page is provided for reference to historical product information.

Replacement sealed bottom bracket for any bicycle with a 68 mm BB shell and English threads.

  • Sealed cartridge bearings with square tapered spindle fitting
  • For bikes with traditional cranksets
  • Crankbolts not included.

Imported.

Item 753545

  • Save 10%! This item qualifies for our drivetrain bike part discount. See Details

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Shimano UN54 Bottom Bracket Specs
Specification
Description
Best use
Mountain biking
320 grams
Steel
68 x 115 millimeters
Weight
Material(s)
Size

Shimano UN54 Bottom Bracket Customer Reviews

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by PowerReviews
Shimano UN54 Bottom Bracket
 
5.0

(based on 1 review)

Reviews

Reviewed by 1 customer

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Apr

5

2010

(12 of 13 customers found this review helpful)

 
5.0

This bottom bracket lasts and lasts

By D. Liu

from Madison, WI

About Me Avid Cyclist

See all my reviews

Site Member

Pros

  • Durable

Cons

  • Difficult To Install

Best Uses

  • Road Biking
  • Touring

Comments about Shimano UN54 Bottom Bracket:

The UN54 is probably one of the most underrated bike components in existence. There are very few bottom brackets out that have better seals, or last as long. The bearings on mine are still smooth as butter and show no signs of play, after about 4,000 miles of touring and 5,000 miles of commuting over the last three years — and the latter frequently in rain, snow and road salt. Other bottom brackets are stiffer, but this one has been proven to last.

Clean and grease the threads, tapers and crankbolts, and use a torque wrench to properly install — or have a shop mechanic do it. Some people used to be worried about the plastic cup, but it's more durable, and easier to install in frames that have seen some wear and rust.

Bottom Line Yes, I would recommend this to a friend

(12 of 13 customers found this review helpful)

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