Shimano’s BB-UN54 bottom bracket carries the Shimano mark of a quality component. It’s a sealed cartridge unit available in a range of sizes for your mountain bike, and featuring English thread, and a JIS Square Taper axle. For convenience the BB-UN54 comes assembled and greased, all ready for installation.
Features & Specifications
Model: BB-UN54
Sizes: Choose from what’s displayed in the drop down menu
Axle Style: JIS Square Taper
Sealed cartridge unit
Thread: English thread
Weight: <285 grams
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Very dependable
SimonWhite, Burnside -ChCh Making a reliable, long lived BB is a lot harder than it looks. The UN54 just keeps working, cheaply. It is a little heavier than the more recent BB designs. I suspect it flexes less than the BBs on which the majority of TdF's have been won. It isn't a monopoly orphan product like Octalink, and it's reliability does not depend on your BB shell being faced and threaded super accurately.
1:41:28 PM
12/31/10
Good pricing
StephenLloyd-Jones, NORTH SYDNEY A while it might not be the latest, these things sure last a long, long time!!
A replacement for 9 year old, only very slighly worn predecessor of the same make!!!
2:26:52 PM
1/8/10
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