Reviews over the

Shimano BB-UN300

Was able to replace the bottom bracket easily. Be careful when measuring the old bottom bracket though so you order the right one.

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Everything according to the offer

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

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

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Meets fine for a city bike

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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!

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Fitted this bottom bracket to my cross bike, an old Giant Terrago gravel conversion. Easy to fit and everything turns wonderfully smooth and quiet. Until I so needed to go through a flooded area in the dunes, with about 40cm of water, many tens of metres long. Within 5 minutes, the BB started creaking and squeaking considerably. Geert from customer service told me that this BB is fine for splashing water and mud and such, but submerging it in water for longer periods is not a good idea. Hollowtech, in turn, works better. In short, fat user fail from me. In the end Mantel was very accommodating with a voucher, and I learned something again.

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Positive introduction to this shop.

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japanese quality bearings

The BB-UN 60 was no longer available, so ordered the 300. Can be transferred 1 to 1 without further modifications.

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This bottom bracket rotates more lightly than the original one.

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Looks and fits well

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The part /specifications are clearly described and the choice was therefore easy to make. And of course not least the part fit exactly as it should.

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After receiving it the same evening fitted and cycled for a while. Not top and expensive stuff but what I had to have it for, the feel of a new bike, running smoothly.

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One of the few available good replacements for the 90's old school bottom bracket bearings. Especially at this price.

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Everything top

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The 2 screws to attach the pedal cranks to the housing were missing. I had to salvage them from another old bike.

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Fully meets expectations. Fit only original Shimano parts = never any problems.

Meets expectations

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Great product, works well.

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Quality service, fast delivery

past perfect

Super product at a good price. Removed old bottom bracket. And fitted this one without any effort. My son can cycle well again

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Used as a replacement for a badly abused bottom bracket from the last century. Looks solid, good seal against dust, and the 110mm version weighs 266g. Not super light but still 86g lighter than the previous one, so there is progress. No problems with it so far, just works as expected.

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