---
product_id: 457086511
title: "Flex Hone 4-1/8\" (105MM) BRM Cylinder Hone 320 Grit Aluminum Oxide"
brand: "flex-hone"
price: "HK$2900"
currency: HKD
in_stock: true
url: https://www.desertcart.hk/products/457086511-flex-hone-4-1-8-105mm-brm-cylinder-hone-320
store_origin: HK
region: Hong Kong
---

# 3.625" to 4.125" bores 4.125" diameter 320 grit Flex Hone 4-1/8" (105MM) BRM Cylinder Hone 320 Grit Aluminum Oxide

**Brand:** flex-hone
**Price:** HK$2900
**Availability:** ✅ In Stock

## Summary

> 🔩 Hone Your Skills with Precision!

## Quick Answers

- **What is this?** Flex Hone 4-1/8" (105MM) BRM Cylinder Hone 320 Grit Aluminum Oxide by flex-hone
- **How much does it cost?** HK$2900 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/457086511-flex-hone-4-1-8-105mm-brm-cylinder-hone-320)

## Best For

- flex-hone enthusiasts

## Why This Product

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

## Key Features

- • **User-Friendly:** Compatible with both 3/8" and 1/2" chucks for easy operation.
- • **Optimal Performance:** 320 grit ideal for reringing and final bore finishing.
- • **Compact & Lightweight:** Weighs only 554 grams for effortless handling and storage.
- • **Precision Engineering:** Self-centering design ensures perfect alignment every time.
- • **Versatile Compatibility:** Works seamlessly with Nikasil, chrome, and other engine types.

## Overview

The Flex Hone 4-1/8" (105MM) BRM Cylinder Hone is a high-performance tool designed for engine enthusiasts. With a 320 grit finish, it excels in reringing and final bore applications, making it perfect for various engine types, including those with Nikasil and chrome coatings. Its self-centering feature and compatibility with standard drill chucks ensure ease of use and precision in every job.

## Description

Flex Hone 4-1/8" (105MM) BRM Cylinder Hone 320 Grit Aluminum Oxide

## Features

- Brand new sealed in package engine cylinder hone is for 3.625" to 4.125" BORES.
- Perfect for Nikasil coated or chrome bores but will work with other engines as well.
- 320 grit, EXCELLENT for reringing jobs or final bore.
- Tool is is labeled as 4.125" diameter but is slightly larger to apply the required wall force for a 4 1/8" bore
- Tool is self centering , Tool can be used with a 3/8" or 1/2" chuck portable drill or drill press

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Brush Research Manufacturing |
| Brand | Flex-Hone |
| Package Dimensions | 35 x 12.9 x 12.7 cm; 554 Grams |
| Item model number | GB418320AO |
| Manufacturer Part Number | GB418320AO |
| Item Weight | 554 g |

## Product Details

- **Brand:** Flex-Hone
- **Bristle Type:** Abrasive Globule Bonded To Flexible Nylon Filament
- **Grit Material:** Aluminum Oxide
- **Grit Type:** 320 Grit
- **Material:** Aluminum Oxide

## Images

![Flex Hone 4-1/8" (105MM) BRM Cylinder Hone 320 Grit Aluminum Oxide - Image 1](https://m.media-amazon.com/images/I/61f9Ueb7-8L.jpg)
![Flex Hone 4-1/8" (105MM) BRM Cylinder Hone 320 Grit Aluminum Oxide - Image 2](https://m.media-amazon.com/images/I/711ha9XrgkL.jpg)
![Flex Hone 4-1/8" (105MM) BRM Cylinder Hone 320 Grit Aluminum Oxide - Image 3](https://m.media-amazon.com/images/I/71LI+vNqxIL.jpg)
![Flex Hone 4-1/8" (105MM) BRM Cylinder Hone 320 Grit Aluminum Oxide - Image 4](https://m.media-amazon.com/images/I/81aPGQTXemL.jpg)
![Flex Hone 4-1/8" (105MM) BRM Cylinder Hone 320 Grit Aluminum Oxide - Image 5](https://m.media-amazon.com/images/I/81X4pgWlJtL.jpg)

---

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**Shop now:** [https://www.desertcart.hk/products/457086511-flex-hone-4-1-8-105mm-brm-cylinder-hone-320](https://www.desertcart.hk/products/457086511-flex-hone-4-1-8-105mm-brm-cylinder-hone-320)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-02*