---
product_id: 726313532
title: "SHIMANO BB-UN55 Bottom Bracket Italian Thread"
brand: "shimano"
price: "€ 5.47"
currency: EUR
in_stock: false
reviews_count: 8
url: https://www.desertcart.es/products/726313532-shimano-bb-un55-bottom-bracket-italian-thread
store_origin: ES
region: Spain
---

# Italian threaded design for rock-solid fit Lightweight hollow spindle for effortless power transfer Super-accurate bearings for ultra-smooth pedaling SHIMANO BB-UN55 Bottom Bracket Italian Thread

**Brand:** shimano
**Price:** € 5.47
**Availability:** ❌ Out of Stock

## Summary

> ⚡️ Shift Smooth, Ride Strong: The Bottom Bracket That Means Business

## Quick Answers

- **What is this?** SHIMANO BB-UN55 Bottom Bracket Italian Thread by shimano
- **How much does it cost?** € 5.47 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/726313532-shimano-bb-un55-bottom-bracket-italian-thread)

## Best For

- shimano enthusiasts

## Why This Product

- Trusted shimano brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug-and-Play Installation:** Get back on the road fast with a bottom bracket that installs quickly—no adjustments needed.
- • **Featherlight Power Transfer:** The hollow spindle design shaves weight while maximizing your pedaling efficiency.
- • **Versatile Ride-Ready Design:** Perfect for mountain, road, and youth bikes, this evergreen component keeps you ahead season after season.
- • **Precision Bearings, Peak Performance:** Experience buttery-smooth rotation with Shimano’s super-accurate sealed cartridge bearings.
- • **Italian Threaded for Ultimate Stability:** Secure your ride with a durable, hard-wearing Italian threaded bottom bracket that won’t loosen under pressure.

## Overview

The SHIMANO BB-UN55 is a high-quality Italian threaded bottom bracket featuring super-accurate sealed cartridge bearings and a lightweight hollow spindle. Designed for smooth, durable performance across mountain, road, and youth bikes, it offers fast, tool-friendly installation without the need for adjustments.

## Description

Product Description          A good quality bottom bracket for traditional chainsets. Super-accurate bearings for smooth operation and improved durability. Durable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fitting. Lightweight hollow spindle. Maintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing life. Fast and easy installation without adjustment. Narrow body allows clearance for cable routing under the bottom bracket.             System Requirements          continuity 2013             
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                     Box Contains          1 x BB-UN55           See more

## Features

- A good quality bottom bracket for traditional chain sets
- Super-accurate bearings for smooth operation and improved durability
- Durable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fitting
- Lightweight hollow spindle
- Fast and easy installation without adjustment

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | Silver |
| Size | 70 - 107mm |
| Style | Bottom Bracket |
| Seasons | Evergreen |
| Usage | Mountain, Road, Youth, cycling |
| Batteries included? | No |
| Brand | SHIMANO |
| Department | Unisex |
| Manufacturer | Shimano |
| Item model number | BBUN55I07 |
| Package Dimensions | 13.8 x 8.2 x 6.2 cm; 339.99 g |
| ASIN | B00F390E0O |

## Images

![SHIMANO BB-UN55 Bottom Bracket Italian Thread - Image 1](https://m.media-amazon.com/images/I/71mlmofPRxL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect for 1980's Italian bike.
*by G***E on 29 October 2019*

I ordered the 70mm wide M36 x 24T version, not being sure if it would fit, and half-expecting to get a different (less unusual) size; but it was supplied correctly and fitted perfectly.

### ⭐⭐⭐⭐⭐ it does what it says and works
*by M***L on 26 August 2020*

Got this as a replacement for my son bike it looks and does the job he happy with it.

### ⭐⭐⭐⭐ Bought for my Voodoo Hoodoo Mountain Bike
*by S***N on 6 June 2017*

I bought this to replace the stock item on my Voodoo Hoodoo mountain bike apparently it was the only one that would fit it's very early days yet but so far so good

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**Shop now:** [https://www.desertcart.es/products/726313532-shimano-bb-un55-bottom-bracket-italian-thread](https://www.desertcart.es/products/726313532-shimano-bb-un55-bottom-bracket-italian-thread)

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-02-21*