Components Bottom brackets Threaded Shimano Tourney BB-UN300 bottom bracket, 68x122.5 mm (D-NL), BSA, square taper, MTB

Shimano

Shimano Tourney BB-UN300 bottom bracket, 68x122.5 mm (D-NL), BSA, square taper, MTB

Name: Shimano Tourney BB-UN300 bottom bracket, 68x122.5 mm (D-NL), BSA, square taper, MTB
Price: 14.09 EUR
Availability: InStock
Rating: 4.5 (113 reviews)

4.54/5 (113 ratings)

Availability

14.09 €

RRP 19.99 €

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By courier to your home Express courier delivery GLS

Delivery method on Thursday 22.01.2026

At collection points

Delivery method on Thursday 22.01.2026

Extended return option up to 100 days More info

Other product variants

Shimano BB-UN300 bottom bracket, 68x118 mm, BSA, square, MTB 12.29 €

Shimano BB-UN300 bottom bracket, 68x127 mm, BSA, square taper, MTB 13.90 €

Shimano BB-UN300 bottom bracket, 68x113 mm, BSA, square type, MTB 12.09 €

Shimano BB-UN300 bottom bracket, 68x110 mm, BSA, square taper, MTB 14 €

Shimano BB-UN300 bottom bracket, 68x115 mm, BSA, square, MTB 17.79 €

Rating (113)

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4,5/5

Product description

Shimano Tourney BB-UN300 middle composition

Encased square center axis BB-UN300. The package does not include screws for mounting the cranks.

Product details

Suitability	MTB
Mount type	BSA
Axis type for crankset	Square
Frame width	68 mm
Material	steel, plastic
Weight	282 g
Mount method	BSA, square
Dimensions	68 x 122 mm
product ID	110093
EAN

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Product rating (113 ratings)

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Warnings and instructions

WARNING
For assistance with installation, adjustment, and replacement of products not found in the user's manual, please consult the place of purchase or a distributor. A dealer's manual intended for professional and experienced bicycle mechanics is available on our website (https://si.shimano.com).
For safety, be sure to carefully read this "user's manual" before use, follow it for correct use, and save it so that you can refer back to it at any time.
The following instructions should always be followed in order to prevent personal injury, physical damage to equipment and the surroundings. The instructions are classified according to the degree of danger or damage that may occur if the product is used incorrectly.
DANGER - Failure to follow the instructions will result in death or serious injury.
WARNING - Failure to follow the instructions could result in death or serious injury.
CAUTION - Failure to follow the instructions could result in personal injury or physical damage to equipment and surroundings.

WARNING:
Do not disassemble or modify the product. This may cause the product to malfunction, you may fall unexpectedly and be seriously injured.
Before riding your bicycle, check that the crank arms are not cracked. If there are cracks, the crank arm may break and you may fall off the bicycle.
Be careful that parts of your clothing do not get caught in the chain while riding. Otherwise, you may fall off the bicycle.

CAUTION:
Be careful not to touch the gear teeth. There is a risk of injury.

Threaded Shimano

Japanese manufacturer produces road, mountain, gravel, trekking, BMX and e-bike groupsets. They also offer a whole series of components and apparel. Their range goes from wheels, footwear, eyewear to backpacks. Shimano is a traditional manufacturer known for their quality work, which is why they are the favourite choice of amateurs and professionals.

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