Dirt Bike Exhaust Plug (Best 450 & 250 Options)

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Have you ever washed your bike and found it hard to start afterwards? If yes, it is possible water got into the exhaust and did some damage. This is where a dirt bike exhaust plug comes in. It is a small, easy-to-use tool that prevents water, dirt, and even insects such as wasps from getting into your bike’s exhaust while it’s parked, being worked on, or being cleaned.

So, yes, you should get one (or two) of these recommended exhaust plugs to prevent any unwanted water, dirt, wasps, etc.,  don’t get into the your bike.`

Exhaust Plug for Dirt Bike

Dirt Bike Exhaust Plug Purpose?

The purpose of the exhaust plug for a dirt bike is to ensure unwanted materials do not get into the bike, causing unnecessary (and costly) damage.

Using one helps to ensure the safety of your dirt bike while washing, in storage (here some good dirt bike storage sheds), or when transporting it from one point to another.

It is small and can easily be plugged into the exhaust of the bike just before washing or before putting it into storage. They come in various colors and sizes and are made from a high-quality material..

Different types of plugs fit into different bikes, such as the 2-stroke and 4-stroke plugs.

Most exhaust plugs for dirt bikes come with streamers or flags that remind you to unplug them while using the bike. This is because plugging up the exhaust of the bike while in use could be dangerous and may prevent the bike from working efficiently and effectively.

Ideal Use Case

You may be wondering when the perfect time to make use of the exhaust plug is. Well, worry no more as we give you some hints below.

One of the best times to make use of the exhaust plug is just before washing the bike. You surely do not want water or foam getting into the exhaust system of your bike. So, to save yourself from unnecessary expenses that may result from water damages, always ensure to plug up the exhaust of your bike just before washing.

Another good use for these plugs is keeping your garage floor, or floor mat, clean. Dust, debris, mud, or even insects such as wasps could easily get into the exhaust system. If this occurs, the exhaust system may be damaged. You surely don’t want this to occur, so it would be ideal to plug up the exhaust just before storage.

Transporting your bike from one location to another is also a great time to install dirt bike exhaust plugs. This is because foreign objects could get into the exhaust system, causing blockages.

These cheap little plastic guys really can save you in the long run.

When Not to Use a Dirt Bike Exhaust Plug

Is there any time you do not need to use one? Yes.

The exhaust plug should not be used when you try to start your dirt bike or when the bike is in motion. Kinda’ a “no-duh” list item, but just needed to make sure that’s clear.

Having the plug inserted while trying to start or ride the bike would obviously prevent the outlet of burnt-up fuel and that’s no good.

What To Look for in an Exhaust Plug

The major thing to look out for when buying a motorcycle exhaust plug is the kind of engine the bike has. Is it a 2-stroke or a 4-stroke? You want to ensure you get the right plug fit for your bike.

Another important thing to look out for is the diameter. What’s the point of buying a plug that doesn’t fit well? So, make sure you know the diameter of your bike’s exhaust before ordering.

Are They Worth Buying?

The beautiful thing about exhaust plugs is that they are not overly pricey. Also, considering the damage and costs they help you prevent, these plugs are worth buying.

However… in the event that you don’t have an exhaust plug available, or don’t find one you like, you can also make a DIY exhaust plug by using a plastic bag or rubber glove stretched over the exhaust and securing it with a rubber band.

Easy enough.

Best Dirt Bike Exhaust Plugs on Amazon

When it comes to exhaust plugs for bikes, there are many brands and variants available in the market. Most of the brands are also available on Amazon.

Here’s a list of some of the top plugs out there:

However, the Pro Circuit exhaust plug and the MELIFE are among the best motorcycle exhaust plugs you can get on Amazon.

Best 4-Stroke Exhaust Plug 

Pro Circuit 4-Stroke Exhaust Plug

View pricing and reviews on Amazon...

The best 4-stroke exhaust plug you can get on Amazon is from Pro Circuit. It is made of a good quality silicone plug that is durable and has a tapered design that fits easily into the exhaust of the bike.

Pros and Cons

Everything has its great side and bad side. Below are some of the pros and cons of the Pro Circuit 4-Stroke Exhaust Plug.


  • Does the job excellently
  • Fits perfectly to the right exhaust
  • Not pricey
  • Easy to use


  • Labels wear off easily
  • A little small for some exhausts

Best 2-Stroke Exhaust Plug

MELIFE 0.6'-1.5' Muffler Exhaust Wash Plug, Motorcycle Dirt Bike 2 Stroke with Streamer Rubber Exhaust Silencer (2 Pack)

View pricing and reviews on Amazon...

One of the best 2-stroke exhaust plugs to get on Amazon is the one from MELIFE. Made from high-quality silicone material, it is durable and fits easily into the 2-stroke exhaust. It also comes along with a streamer that reminds you to take off the plug when you need to use the bike.

Pros and Cons  

Look below for some of the pros and cons of the MELIFE 2-stroke Exhaust Plug.


  • Functions practically
  • Beautifully designed
  • Reminder streamer
  • High-quality material


  • Tiny for some exhausts