---
product_id: 1571569
title: "EBC Brakes HJK27B 54-Piece Hex Main Jet Kit for Mikuni 4/042 Carburetor, black"
brand: "ebc"
price: "A$251"
currency: AUD
in_stock: true
reviews_count: 3
url: https://www.desertcart.com.au/products/1571569-ebc-brakes-hjk27b-54-piece-hex-main-jet-kit-mikuni
store_origin: AU
region: Australia
---

# Accuracy to 0.0001 inch 54 precision jets included Fits Mikuni 4/042 hex carbs EBC Brakes HJK27B 54-Piece Hex Main Jet Kit for Mikuni 4/042 Carburetor, black

**Brand:** ebc
**Price:** A$251
**Availability:** ✅ In Stock

## Summary

> ⚡ Tune Like a Pro, Ride Like a Legend

## Quick Answers

- **What is this?** EBC Brakes HJK27B 54-Piece Hex Main Jet Kit for Mikuni 4/042 Carburetor, black by ebc
- **How much does it cost?** A$251 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/1571569-ebc-brakes-hjk27b-54-piece-hex-main-jet-kit-mikuni)

## Best For

- ebc enthusiasts

## Why This Product

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

## Key Features

- • **Complete Jet Arsenal:** 54 jets from size 240 to 500, 2 pieces each for ultimate tuning flexibility
- • **Micron-Level Precision:** Accurate to one tenth of a thousandth of an inch for flawless fuel flow
- • **Perfect Fit for Mikuni:** Specifically designed for Mikuni 4/042 hex style carburetors, ensuring seamless installation
- • **Durable Brass Construction:** High-quality brass jets resist wear and maintain performance over time
- • **Flow-Calibrated Reliability:** Each jet is flow tested and stamped for guaranteed performance

## Overview

The EBC Brakes HJK27B 54-Piece Hex Main Jet Kit offers a comprehensive set of high-precision brass jets tailored for Mikuni 4/042 hex carburetors. Each jet is meticulously flow-calibrated and accurate to 0.0001 inch, ensuring optimal fuel delivery and performance. With 54 sizes included, this kit empowers riders and mechanics to fine-tune their carburetors with unmatched precision and reliability.

## Description

EBC main jets are precise, clearly marked and reliably gauged using pin gauges, and accurate to one tenth of a thousandth of an inch. All jets are flow calibrated and extremely accurate in terms of fuel flow rate as stamped. Mikuni 4/042 hex main jets measure 11.5mm long (6.5mm hex body length/5mm thread length). High precision brass main jets for Mikuni carburetors using 4/042 hex style main jets. Kit contains 2 pieces each jet sizes 240 thru 500 for a total of 54 jets.

## Features

- high precision brass main jets for mikuni carburetors using 4/042 hex style main jets
- kit contains 2 pieces each jet sizes 240 thru 500 for a total of 54 jets
- mikuni 4/042 hex main jets measure 11.5mm long (6.5mm hex body length/5mm thread length)
- ebc main jets are precise, clearly marked and reliably gauged using pin gauges, and accurate to one tenth of a thousandth of an inch
- all jets are flow calibrated and extremely accurate in terms of fuel flow rate as stamped
- Fit type: Vehicle Specific
- High precision brass main jets for Mikuni carburetors using 4/042 hex style main jets
- Kit contains 2 pieces each jet sizes 240 thru 500 for a total of 54 jets
- Mikuni 4/042 hex main jets measure 11.5mm long (6.5mm hex body length/5mm thread length)
- EBC main jets are precise, clearly marked and reliably gauged using pin gauges, and accurate to one tenth of a thousandth of an inch
- All jets are flow calibrated and extremely accurate in terms of fuel flow rate as stamped

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | EBC Brakes |
| Brand | EBC |
| Model | HJK27B |
| Item Weight | 1.1 pounds |
| Product Dimensions | 10.9 x 9.1 x 2.3 inches |
| Item model number | HJK27B |
| Is Discontinued By Manufacturer | No |
| Exterior | Painted |
| Manufacturer Part Number | HJK27B |
| OEM Part Number | HJK27B |
| Position | Right |
| Lift Type | Manual |

## Product Details

- **Brand:** EBC
- **Exterior Finish:** Painted
- **OEM Part Number:** HJK27B
- **Manufacturer:** EBC Brakes
- **UPC:** 840655082668

## Images

![EBC Brakes HJK27B 54-Piece Hex Main Jet Kit for Mikuni 4/042 Carburetor, black - Image 1](https://m.media-amazon.com/images/I/61WAhVyGjjL.jpg)
![EBC Brakes HJK27B 54-Piece Hex Main Jet Kit for Mikuni 4/042 Carburetor, black - Image 2](https://m.media-amazon.com/images/I/51WwzLtvqjL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ Four Stars
*by M***L on October 16, 2015*

2 stroke 500 4 cyl... needs lots of jets :)

### ⭐⭐⭐⭐⭐ Great kit
*by D***. on May 22, 2019*

Great kit at a great price, exactly what I needed

### ⭐⭐⭐⭐⭐ Five Stars
*by J***R on April 27, 2015*

nice kit.. all the jets i need are in there A+

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.com.au/products/1571569-ebc-brakes-hjk27b-54-piece-hex-main-jet-kit-mikuni](https://www.desertcart.com.au/products/1571569-ebc-brakes-hjk27b-54-piece-hex-main-jet-kit-mikuni)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-07*