Shimano
BB-UN300 Bottom Bracket - English, 68mm Shell, Square Taper JIS

5.0

Shimano BB-UN300 Bottom Bracket - English, 68mm Shell, Square Taper JIS

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$18¹⁸

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113 [Silver]

Amazon

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113 [Silver]

$18²⁴

110 [Silver]

$18⁴⁸

118 [Silver]

$20⁴⁸

117.5 [Silver]

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Shimano BB-UN300 Square Spindle Bottom Brackets

Crankarm fixing bolts sold separately
Fits JIS square-taper cranksets
Hollow spindle

Specifications

Bottom Bracket Shell I.D.

34.8mm / English

Bottom Bracket Shell Width (mm)

Bottom Bracket/Frame Interface

English (BSA)

Defined Color

Black

Spindle Interface Type

Square Taper - JIS

Spindle Length (mm)

107mm, 110mm, 113mm, 117.5mm, 118mm

Silver - 107 UPC

192790619286

Silver - 107 EAN

4550170619282

Silver - 107 MPN

EBBUN300B07X

Silver - 110 UPC

192790619200

Silver - 110 EAN

4550170619206

Silver - 110 MPN

EBBUN300B10X

Silver - 113 UPC

192790619323

Silver - 113 MPN

EBBUN300B13X

Silver - 117.5 UPC

192790619224

Silver - 117.5 EAN

4550170619220

Silver - 117.5 MPN

EBBUN300B17X

Silver - 118 UPC

192790619231

Silver - 118 MPN

EBBUN300B18X

Tree Fort ID:

333222443626

Review Summary

LIKES

Ease of Installation (2),

Good Quality (2)

WORKS FOR

Road Cycling (1),

JIS Taper Square (1)

DISLIKES

none

5.0 GEARS
2 reviews

Customer Questions

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Customer Reviews

July 24, 2021

reviewed by: anonymous

I was looking for a replacement for a worn UN55. This BB does the trick. The price was great especially with the free shipping!

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Yes, I would recomend this to a friend.

Likes: Good Quality, Ease of Installation

August 23, 2021