---
product_id: 23294390
title: "4 1/8\" (105mm) Flex-Hone Cylinder Hone 180 grit silicon carbide"
brand: "brush research"
price: "HK$38"
currency: HKD
in_stock: true
reviews_count: 8
url: https://www.desertcart.hk/products/23294390-4-1-8-105mm-flex-hone-cylinder-hone-180-grit
store_origin: HK
region: Hong Kong
---

# Use with cordless or air drill Fits 3.75"-4.125" bores 105mm diameter precision fit 4 1/8" (105mm) Flex-Hone Cylinder Hone 180 grit silicon carbide

**Brand:** brush research
**Price:** HK$38
**Availability:** ✅ In Stock

## Summary

> ⚙️ Hone your edge, own the precision.

## Quick Answers

- **What is this?** 4 1/8" (105mm) Flex-Hone Cylinder Hone 180 grit silicon carbide by brush research
- **How much does it cost?** HK$38 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/23294390-4-1-8-105mm-flex-hone-cylinder-hone-180-grit)

## Best For

- brush research enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Operation:** Works seamlessly with any cordless or shop air drill—no extra tools needed.
- • **Proudly Made in the USA:** Crafted with quality and reliability you can trust for professional-grade results.
- • **Versatile Compatibility:** Perfectly hones alloy steel, aluminum, and iron cylinders within a 3.75"-4.125" range.
- • **Precision Flex-Hone Technology:** Self-centering silicon carbide globules ensure flawless bore alignment every time.
- • **Durable 180 Grit Silicon Carbide:** Delivers a soft cutting action that creates the ideal cross hatch for piston ring seating.

## Overview

The 4 1/8" (105mm) Flex-Hone with 180 grit silicon carbide is a flexible, self-aligning honing tool designed for bores between 3.75" and 4.125". Compatible with cordless and air drills, it creates the perfect cross hatch pattern for piston ring seating, ensuring superior surface finish on alloy steel, aluminum, and iron cylinders. Made in the USA, it combines durability with professional-grade performance.

## Description

A resilient, flexible, honing tool with a soft cutting action. The abrasive (points) globules each have independent suspension that assures the Flex-Hone to be self-centering, self aligning to the bore, and selfcompensating for wear. Creates the required cross hatch for piston ring seating.

Review: Works well - Works well
Review: Need it - Cleaning out surface rust of the cylinders.

## Features

- 4-1/8" (105mm) 180 Grit Flex hone made of silicon carbide
- Bore Range 3.750"-4.125"
- 13-1/2" Overall Length
- tools required Use with any Cordless or Shop Air Drill
- Made in the U.S.A.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002N391Y8 |
| Best Sellers Rank | #407,015 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #138 in Flex Hones |
| Brand Name | Brush Research |
| Compatible Material | Alloy Steel, Aluminum, Iron |
| Customer Reviews | 4.3 4.3 out of 5 stars (129) |
| Grit Material Type | Silicon Carbide |
| Grit Number | 180 |
| Grit Type | Very Fine |
| Item Weight | 0.63 Kilograms |
| Manufacturer | Brush Research |
| Material Type | Silicon Carbide |
| UPC | 314362176007 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Brush Research
- **Grit Material:** Silicon Carbide
- **Grit Type:** Very Fine
- **Item Weight:** 0.63 Kilograms
- **Material:** Silicon Carbide

## Images

![4 1/8" (105mm) Flex-Hone Cylinder Hone 180 grit silicon carbide - Image 1](https://m.media-amazon.com/images/I/31a9jBwxIrL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works well
*by C***E on January 19, 2025*

Works well

### ⭐⭐⭐⭐⭐ Need it
*by J***N on July 27, 2024*

Cleaning out surface rust of the cylinders.

### ⭐⭐⭐⭐⭐ Did the job and saved me a bill from the machinist!
*by D***Y on April 5, 2023*

Product came in well packaged, as a technician you want to do all the work and save money whenever possible, My cylinders were dull and shiny and my crosshatch marks were no longer visible, was going to have it sent out but figured what the heck I'll hone it out myself, ordered the cylinder sized hone needed did some research on how to properly do it, and came out how I expected, be sure to follow the procedures online, use the proper drill speed, and stroke evenly. Cylinders were saved and tolerance were well within the manufactures spec, this tool is a must have for someone that wants to save some money and is willing to follow the correct procedure.

## Frequently Bought Together

- 4 1/8" (105mm) Flex-Hone Cylinder Hone 180 grit silicon carbide
- Permatex 81950 Ultra Slick Engine Assembly Lube, 4 oz. , Red
- Brush Research GB41824 FLEX-HONE®, 4-1/8" (105mm) Diameter, 240 Grit, Silicon Carbide, For Mild Steel, Stainless Steel, Cast Iron and Softer Ferrous Materials

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**Shop now:** [https://www.desertcart.hk/products/23294390-4-1-8-105mm-flex-hone-cylinder-hone-180-grit](https://www.desertcart.hk/products/23294390-4-1-8-105mm-flex-hone-cylinder-hone-180-grit)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-04-22*