Shimano-BB-UN300-Bottom-Bracket-68mm-Square-Taper-JIS-Bottom-Bracket-CR3483-Bicycle-Bottom-Brackets

SKU: CR3483

Shimano BB-UN300 Square Taper JIS 68x110mm Spindles BSA (English) Bottom Bracket

Shimano
$19.22
$19.22 $23.95
Sale Sold out
/
Shipping calculated at checkout.
🚚 Order within the next 2 hours, 15 minutes for delivery by 28 Sep, 2024.

Fast & Free Shipping

Chat with Support for Expert Advice

Manufacturer Warranty

This is a pre order item. We will ship it when it comes in stock.
Specifications

BB Shell Width (mm)68 mm
BB/Frame InterfaceEnglish
Spindle Length110
Bottom Bracket Shell I.D.1.37
Spindle Interface TypeSquare Taper JIS
MPNEBBUN300B10X
UPC192790619200

Shimano BB-UN300 Square Spindle Bottom Brackets

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

Shimano BB-UN300 Square Spindle Bottom Brackets

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

Customer Reviews

Based on 21 reviews
43%
(9)
29%
(6)
29%
(6)
0%
(0)
0%
(0)
J
Jae

Shimano discontinued the high end un55 square tapers in favor of this junk. Lasts me about 2k miles before I need a new one. The un55 I got 3-4 years ago with almost 10k miles or more is still smooth as the day I got it. :(

J
Jae

Shimano discontinued the high end un55 square tapers in favor of this junk. Lasts me about 2k miles before I need a new one. The un55 I got 3-4 years ago with almost 10k miles or more is still smooth as the day I got it. :(;

M
Moby

The sealed bearing bottom bracket is satisfactory in every way so far. ItÔøΩs not possible to rate it on durability until sufficient time passes. The bearing is smooth and easy to install with the proper tools. At less than $20 I would buy again if this one lasts one year commuting (4500 miles).

M
Moby

The sealed bearing bottom bracket is satisfactory in every way so far. It’s not possible to rate it on durability until sufficient time passes. The bearing is smooth and easy to install with the proper tools. At less than $20 I would buy again if this one lasts one year commuting (4500 miles).;

A
Amazon Customer

I ordered the 68X110mm bottom bracket. The unit is marked as being 110mm. When I measured the bottom bracket from end to end with my digital calipers it measured 111.73mm. That's nearly 2mm over the specified size of 110mm. When I stood them up side to side with the original 110mm bb the new one is definitely longer. Why is that?

123