Picture 1 of 5

Stock photo

Shimano UN300 Bottom Bracket Bike Cycle Bicycle BB Square Taper Sealed Cartridge - Picture 1 of 5

Shimano UN300 Bottom Bracket Bike Cycle Bicycle BB Square Taper Sealed Cartridge - Picture 2 of 5

Shimano UN300 Bottom Bracket Bike Cycle Bicycle BB Square Taper Sealed Cartridge - Picture 3 of 5

Shimano UN300 Bottom Bracket Bike Cycle Bicycle BB Square Taper Sealed Cartridge - Picture 4 of 5

Shimano UN300 Bottom Bracket Bike Cycle Bicycle BB Square Taper Sealed Cartridge - Picture 5 of 5

Shimano BB-UN300 Square Taper Bottom Bracket

4.836 product ratings

sdj-sports (295079)

99.7% positive Feedback

Price:

£14.89

Free delivery in 2-3 days

Estimated between Tue, 29 Apr and Wed, 30 Apr

Returns:

30 days return. Buyer pays for return postage. If you use an eBay delivery label, it will be deducted from your refund amount.

Condition:

New

The Shimano UN300 Bottom Bracket is a good quality BB for traditional chain sets. Genuine Shimano UN300 Bottom Bracket. Shimano Bottom Bracket UN300 68 x 113mm Square Taper BB British Thread. Narrow body allows clearance for cable routing under the bottom bracket.

About this product

Product Identifiers

BrandShimano

MPNBB-UN300

GTIN4550170622190

UPC4550170622190

ModelBB-UN300

eBay Product ID (ePID)24043732162

Product Key Features

Spindle TypeSquare Taper - JIS

Compatible BrandShimano

Shell Width73 mm

Bottom Bracket Shell TypeBSA (English)

Compatible Bike TypeUniversal, Mountain Bike

ColourMulticoloured

Part TypeBottom Bracket

All listings for this product

Shimano Bottom Bracket UN300 Square Taper British Thread

item 1 Shimano Bottom Bracket UN300 Square Taper British Thread

Shimano UN300 Bottom Bracket Bike Cycle Bicycle BB Square Taper Sealed Cartridge

item 2 Shimano UN300 Bottom Bracket Bike Cycle Bicycle BB Square Taper Sealed Cartridge

Shimano Bottom Bracket UN300 73 x 123mm Square Taper GRADE C

item 3 Shimano Bottom Bracket UN300 73 x 123mm Square Taper GRADE C

Shimano Bottom Bracket UN300 73 x 123mm Square Taper BB British Thread GRADE C

item 4 Shimano Bottom Bracket UN300 73 x 123mm Square Taper BB British Thread GRADE C

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 5 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 6 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 7 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 8 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 9 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 10 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 11 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 12 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 13 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 14 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 15 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 16 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 17 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 18 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 19 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 20 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 21 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 22 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 23 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 24 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 25 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 26 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 27 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 28 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 29 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 30 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 31 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 32 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 33 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 34 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 35 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 36 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 37 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 38 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 39 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 40 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 41 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 42 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

item 43 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 44 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 45 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

item 46 Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 123mm MTB Bike

Shimano BB-UN300 Bottom Bracket Square Taper Cartridge 68×117.5mm MTB Bicycle

item 47 Shimano BB-UN300 Bottom Bracket Square Taper Cartridge 68×117.5mm MTB Bicycle

Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 117.5mm

item 48 Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 117.5mm

Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 123mm

item 49 Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 123mm

Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 117.5mm

item 50 Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 117.5mm

Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 123mm

item 51 Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 123mm

Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 117.5mm

item 52 Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 117.5mm

Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 123mm

item 53 Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 123mm

Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 123mm

item 54 Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 123mm

Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 117.5mm

item 55 Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 117.5mm

Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 117.5mm

item 56 Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 117.5mm

Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 123mm

item 57 Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 123mm

Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 117.5mm

item 58 Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 117.5mm

Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 123mm

item 59 Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 123mm

listings for this product

Ratings and reviews

4.8

6 product ratings

5 users rated this 5 out of 5 stars
1 users rated this 4 out of 5 stars
0 users rated this 3 out of 5 stars
0 users rated this 2 out of 5 stars
0 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

by jedders2004
04 Jan, 2022
Great product from Shinano
Really nice quality item. I think this will see me or my bike out! It's Shimano so I dont need to say any more.
Verified purchase: YesCondition: New
by mercedesdavid2005
12 Aug, 2022
Good seals. Spins nice and quietly
Bought this to replace the BB on my 2021 Specialized Rockhopper. This unit is by far better quality than the one that came on the bike. It has more seals to keep grime out. It spins so smoothly and unlike the one I’m replacing is ultra quiet.
Verified purchase: YesCondition: New
by mariuspawli_0
11 Feb, 2022
Replacement Bottom Bracket
The BB was the same type as the one originally in the bike, so it is a perfect replacement.
Verified purchase: YesCondition: New
by jbax9388
07 Aug, 2022
Branded Product
a name you can trust, only down side is, it is not supplied with new bolts
Verified purchase: YesCondition: New
by elham99
13 Mar, 2025
Fitted perfectly a big improvement over ...
Fitted perfectly a big improvement over my worn out one - thanks
Verified purchase: YesCondition: New
by hilste-wivbzswt
13 Oct, 2021
Asexpected
Verygood
Verified purchase: YesCondition: New

Best-selling in Bottom Brackets

Save on Bottom Brackets

You may also like