CMSAS

New Exhaust Muffler for Honda TRX400EX SPORTRAX 400 1999-2008 18300-HN1-A70



Exhaust Muffler

  • Reduce noise: Designed to help minimize exhaust noise, which can contribute to a quieter, more comfortable off-road experience.
  • Enhance engine performance: Optimized exhaust flow may help support improved engine response and power output.
  • Improve fuel efficiency: By supporting more efficient exhaust flow, this muffler can help contribute to more consistent fuel combustion and mileage.

Exhaust Silencers

Fitment

  • For Honda TRX400EX SPORTRAX 400 1999-2008
  • For Honda TRX400X 2X4 2009-2014 ( No O2 sensor port – not suitable for emissions testing on EFI models )

Part Numbers

  • 18300-HN1-000, 18300-HN1-A70, 18392-MK4-000, 18392-MBH-000, 18300HN1000, 18300HN1A70, 18392MK4000, 18392MBH000,MF112A2002

Package Included

  • 1 X Exhaust Muffler
  • Installation bolts and gasket (as shown in pictures)

Note

  • Actual noise reduction and performance benefits may vary by vehicle. Confirm compatibility with your make/model before purchase.

Product Specifications


Condition New
Material Aluminized steel
Fitment Type Direct replacement
Warranty 1 Year
O2 Sensor Port No


Robust Construction

We have undergone rigorous testing and can be used in harsh environments.

Effective Noise Control

The muffler has a chamber structure, which can effectively reduce exhaust noise by reflection, absorption, etc., creating a quieter driving experience.

Performance-Optimized Design

Engineered to balance backpressure, helping maintain engine efficiency for smoother acceleration and improved fuel economy.

Easy Bolt-On Installation

Direct replacement design requires no welding. Compatible with standard tools for straightforward installation by experienced DIYers.

Exhaust Silencers

When to Replace Your Exhaust Muffler

You may consider replacing your exhaust muffler if you experience any of the following common symptoms:

  • Excessive noise coming from the exhaust
  • Rattling or unusual vibrations from the exhaust system
  • Visible fumes or smoke coming from the exhaust
  • Decreased fuel efficiency and reduced engine performance
Application For Honda TRX400EX SPORTRAX 400 1999-2008 For Honda TRX400X 2X4 2009-2014 OE/Part number 18300-HN1-000, 18300-HN1-A70, 18392-MK4-000, 18392-MBH-000, 18300HN1000, 18300HN1A70, 18392MK4000, 18392MBH000,MF112A2002


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