---
product_id: 407367025
title: "JJing Muffler Exhaust Pipe Kit for Honda GX340 GX390 GX420 11Hp 13Hp 16Hp Engine Harbor Freight Predator 420cc Champion 389cc 420cc 439cc Engine"
brand: "jjing"
price: "A$135"
currency: AUD
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.au/products/407367025-jjing-muffler-exhaust-pipe-kit-for-honda-gx340-gx390-gx420
store_origin: AU
region: Australia
---

# Reduces engine noise effectively Complete installation kit included Fits multiple 11-16HP engines JJing Muffler Exhaust Pipe Kit for Honda GX340 GX390 GX420 11Hp 13Hp 16Hp Engine Harbor Freight Predator 420cc Champion 389cc 420cc 439cc Engine

**Brand:** jjing
**Price:** A$135
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade your power game with quiet confidence!

## Quick Answers

- **What is this?** JJing Muffler Exhaust Pipe Kit for Honda GX340 GX390 GX420 11Hp 13Hp 16Hp Engine Harbor Freight Predator 420cc Champion 389cc 420cc 439cc Engine by jjing
- **How much does it cost?** A$135 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/407367025-jjing-muffler-exhaust-pipe-kit-for-honda-gx340-gx390-gx420)

## Best For

- jjing enthusiasts

## Why This Product

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

## Key Features

- • **Durable OEM-Grade Build:** High-quality materials trusted by small engine manufacturers for reliable, long-lasting performance.
- • **Universal Compatibility:** Seamlessly fits Honda GX340, GX390, GX420 engines plus Harbor Freight Predator and Champion clones—one kit for many machines.
- • **All-in-One Maintenance Kit:** Includes muffler assembly, exhaust pipe, spark plug, studs, nuts, and gaskets for hassle-free replacement.
- • **Engineered for Quiet Power:** Optimizes exhaust flow to reduce noise, letting your equipment run smoother and quieter.
- • **Boost Your Equipment’s Lifespan:** Regular maintenance with this kit keeps your engine running efficiently, avoiding costly downtime.

## Overview

The JJing Muffler Exhaust Pipe Kit is a premium replacement solution designed for Honda GX340, GX390, and GX420 engines (11-16HP) and compatible clones like Harbor Freight Predator and Champion. This comprehensive kit includes all necessary components—muffler assembly, exhaust pipe, spark plug, studs, nuts, and gaskets—ensuring a smooth, quiet, and efficient engine operation. Engineered for durability and broad compatibility, it’s the go-to choice for professionals seeking reliable maintenance and enhanced equipment performance.

## Description

JJing Muffler Exhaust Pipe Kit for Honda GX340 GX390 GX420 11Hp 13Hp 16Hp Engine Harbor Freight Predator 420cc Champion 389cc 420cc 439cc Engine

## Features

- This exhaust muffler is a perfect replacement for Honda GX340 GX390 GX420 muffler assembly. It includes Honda GX390 GX340 GX420 engine exhaust muffler, exhaust pipe or manifold, muffler studs,muffler nuts, muffler gaskets, carburetor gaskets, as well as 1 pcs spark plug for the need of regular maintenance of your Honda 11hp 13hp 16hp motor.This muffler replaces Honda muffler 18310-ZE2-W61, 18310-ZE2-W62, 18320-ZE2-W61 and more.
- This Honda GX 390 GX 340 engine muffler assembly fits many power equipments powered by Honda GX 390 GX 340 GX 420 11 hp 13 hp 16 hp engine, including water pump, pressure washer, compressor and more other. It is high quality replacement for Honda 390 muffler, Honda 340 muffler and Honda 420 mufffler. Make your motor runs more quietly.
- This is also a good muffler replacement for Harbor Freight Predator 420cc exhaust muffler, 459cc engine muffler, Champion 389cc exhaust muffler, Champion 439cc exhaust muffler assembly
- This Honda 13hp exhaust muffler or Honda 11hp exhaust muffler replacement also fits many other Honda clone 389cc 420cc 439cc 359cc engine motor, including DuroMax 420cc 440cc 16hp 18hp Engine and Lifan 389cc 420cc motor and many more others.
- The kit includes muffler assmebly, exhaust pipe, 1 spark plug, 2 muffler studs, 5 nuts for muffler installation, 2 free gaskets for muffler maintenance and 3 free carburetor maintenance.
- This well made product is massively used in production by many small engine manufacturers, which means very good perfromance. It is excellent replacement for Honda 390 GX exhaust muffler and Honda 340 GX exhaust muffler.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | JJing |
| Item dimensions L x W x H | 8.86 x 7.72 x 6.22 inches |
| Vehicle Service Type | Car |
| Shape | Round |
| UPC | 747492774926 |
| Manufacturer | JJing |
| Item Weight | 5.02 pounds |
| Product Dimensions | 8.86 x 7.72 x 6.22 inches |

## Product Details

- **Brand:** JJing
- **Item dimensions L x W x H:** 8.86 x 7.72 x 6.22 inches
- **Vehicle Service Type:** Car
- **Shape:** Round
- **UPC:** 747492774926

## Images

![JJing Muffler Exhaust Pipe Kit for Honda GX340 GX390 GX420 11Hp 13Hp 16Hp Engine Harbor Freight Predator 420cc Champion 389cc 420cc 439cc Engine - Image 1](https://m.media-amazon.com/images/I/71nbxJpH-nL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect replacement
*by J***N on August 19, 2025*

Great replacement muffler for Timberwolf TW-5 with Honda GX340 engine. Came with everything you would need studs, gaskets, header pipe and more. Looks, works and sounds as good as original with a good price point.

### ⭐⭐⭐⭐⭐ Fit my GX 390 Perfectly
*by J***N on October 14, 2024*

Replaced the rusted muffler with this unit. Not quite as heavy duty as the original unit but fit well, included gaskets and hardware. Should last a long time.

### ⭐⭐⭐⭐⭐ Good
*by G***  on September 4, 2025*

Fits perfectly

## Frequently Bought Together

- JJing Muffler Exhaust Pipe Kit for Honda GX340 GX390 GX420 11Hp 13Hp 16Hp Engine Harbor Freight Predator 420cc Champion 389cc 420cc 439cc Engine
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- Ruma Fuel Tank Kit for Honda GX340 GX390 GX240 GX270 Harbor Freight 420cc Generac Champion 389cc 420cc 439cc Engine Pressure Washer Water Pump Compressor

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-14*