---
product_id: 140573270
title: "YouU Crank Bearing 5/16\" Ball Size x 7/9/12 Balls for Bicycle Crank Bike Crank Bikes Beach Cruiser limos Stretch Bicycles"
brand: "youu"
price: "¥2066"
currency: JPY
in_stock: true
reviews_count: 8
url: https://www.desertcart.jp/products/140573270-youu-crank-bearing-5-16-ball-size-x-7-9
store_origin: JP
region: Japan
---

# 9 high-strength steel balls Fits multiple bike types 5/16" precision ball size YouU Crank Bearing 5/16" Ball Size x 7/9/12 Balls for Bicycle Crank Bike Crank Bikes Beach Cruiser limos Stretch Bicycles

**Brand:** youu
**Price:** ¥2066
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your ride with precision and durability — don’t get left behind!

## Quick Answers

- **What is this?** YouU Crank Bearing 5/16" Ball Size x 7/9/12 Balls for Bicycle Crank Bike Crank Bikes Beach Cruiser limos Stretch Bicycles by youu
- **How much does it cost?** ¥2066 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/140573270-youu-crank-bearing-5-16-ball-size-x-7-9)

## Best For

- youu enthusiasts

## Why This Product

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

## Key Features

- • **Complete Pair Set:** Two bearings included for hassle-free crank maintenance
- • **Optimized Ball Count:** 9 balls for balanced load distribution and reduced wear
- • **Universal Compatibility:** Perfect fit for beach cruisers, lowriders, and stretch bikes
- • **Precision 5/16" Ball Size:** Engineered for smooth, reliable crank rotation
- • **Durable Steel Construction:** High-intensity steel ensures long-lasting performance

## Overview

The YouU Crank Bearing set features 5/16" diameter steel balls with 9 balls per bearing, designed for smooth and durable crank performance. With an outer diameter of 1.74 inches and inner diameter of 1.28 inches, these bearings fit a wide range of bicycles including beach cruisers and stretch bikes. Crafted from high-quality steel, they ensure long-lasting reliability and come as a convenient pair for easy replacement.

## Description

YouU Crank Bearing 5/16" Ball Size x 7/9/12 Balls for Bicycle Crank Bike Crank Bikes Beach Cruiser limos Stretch Bicycles

## Features

- ✎【Package Include】2 Pieces Crank Bearing 5/16" ball size x 9 balls. Set of bearing. Pair of bearings.Please check the size carefully before buying.
- ✎【Best Crank Bearing】Crank, Ball Size 5/16", Balls 9.OUTER DIAMETER: 1.74 inch/44.5, INNER DIAMETER: 1.28 inch/32.5mm, BALL DIAMETER: 5/16 inch.
- ✎【Widely usage】 For bicycle crank, bike crank, lowrider bikes, beach cruiser, limos, stretch bicycles.
- ✎【Material】This ball bearing retainer made of steel, high quality, durable and high intensity.
- ✎【Our store supply a variety of MTB bike Repair Accessories】YouU Direct store not only have Crank Bearing 5/16"x9, 5/16"x7, but also have Bicycle C-Clips Clamps, Rotating S-Hook Clips, Bicycle Cable Donuts O-Ring, 8mm Hex Crank Arm Fixing Bolts Bicycle Crank Screws.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | YouU |
| Material | Rubber |
| Bore Diameter | 8 Millimeters |
| Item Weight | 0.1 Pounds |
| Bearing Type | Ball Bearing |
| Compatible Lubricant | Grease |
| Outside Diameter | 1.74 Inches |
| UPC | 746362922498 |
| Manufacturer | YouU |
| Item Package Dimensions L x W x H | 4.92 x 2.99 x 0.28 inches |
| Package Weight | 0.05 Kilograms |
| Brand Name | YouU |
| Part Number | YouU-Bicycle Crank |
| Size | 5/16''x9/2pcs |

## Product Details

- **Brand:** YouU
- **Material:** Rubber
- **Bore Diameter:** 8 Millimeters
- **Item Weight:** 0.1 Pounds
- **Bearing Type:** Ball Bearing

## Images

![YouU Crank Bearing 5/16" Ball Size x 7/9/12 Balls for Bicycle Crank Bike Crank Bikes Beach Cruiser limos Stretch Bicycles - Image 1](https://m.media-amazon.com/images/I/61DCvHxCGxL.jpg)
![YouU Crank Bearing 5/16" Ball Size x 7/9/12 Balls for Bicycle Crank Bike Crank Bikes Beach Cruiser limos Stretch Bicycles - Image 2](https://m.media-amazon.com/images/I/617tUq4YbAL.jpg)
![YouU Crank Bearing 5/16" Ball Size x 7/9/12 Balls for Bicycle Crank Bike Crank Bikes Beach Cruiser limos Stretch Bicycles - Image 3](https://m.media-amazon.com/images/I/61OsjjmFloL.jpg)
![YouU Crank Bearing 5/16" Ball Size x 7/9/12 Balls for Bicycle Crank Bike Crank Bikes Beach Cruiser limos Stretch Bicycles - Image 4](https://m.media-amazon.com/images/I/61KE-fYTKYL.jpg)
![YouU Crank Bearing 5/16" Ball Size x 7/9/12 Balls for Bicycle Crank Bike Crank Bikes Beach Cruiser limos Stretch Bicycles - Image 5](https://m.media-amazon.com/images/I/71MLBBXqdgL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Will this fit a 14 inch Royal Baby kids bike?**
A: Yes, that’s exactly what I bought them for!

**Q: This doesn’t fit my child 12” bike. What size should I purchase?**
A: Can you measure one of the old ball bearing that’s how I knew the right one to buy

**Q: Will this fit a schwinn Koen 16" bike?**
A: Typically, these bearings come in 2 different sizes. medium and large. Take a look at the crank and if looks like the size of a silver dollar then it would be large. If it looks like a fifty-cent coin, then it is medium. Hope this helps.

**Q: i have a 9 ball bearing park that measures the inner diameter is 27mm and outer diameter is 32-33mm, do you have a part?**
A: Hello, I'm sorry, we don't have the size you need, thank you for your understanding.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fit perfect.
*by A***N on August 2, 2022*

Used these bearings on a dk frame with a one piece crank. I think they will work on most bikes with a one piece crank.

### ⭐⭐⭐⭐ Wonderful product!
*by D***D on February 3, 2021*

Wonderful product!

### ⭐⭐⭐⭐⭐ Fixed the issue I was having and they fit perfectly
*by C***R on September 27, 2022*

I like the bearings and they fixed the issue I was having

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-29*