Exhausts & Accessories


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How to choose motocross exhaust: Possibly the most common aftermarket upgrade to any bike is replacing the stock exhaust, whether it be a slip-on or full system. Actually, it's almost less common to actually see a bike with a stock exhaust, instead of a shiny and trick system. It could be for extra power, sound, or regulated areas, but either way we almost all want one. What's there to look for? Read on to find out.

Exhaust Types

When looking for an exhaust there is something to ask yourself, first...two-stroke or four-stroke? This will make a bit of a difference on price, along with what options you have to work with in materials and combinations.

Let's start with four-stroke, do you want a slip-on or full system? A slip-on for most bikes consists of an exhaust can and connecting (mid-pipe) pipe to the stock head pipe. These systems have most of the look from a full system, plus some power gains (as they're usually less restrictive than stock). They're also available with spark arrestors or in forestry models for those looking to meet standards for the trails in their area.

If you're looking to take more advantage of an aftermarket exhaust, you can also look at getting a full system. A full system includes the exhaust can and mid-pipe found in most slip-on kits, plus a head pipe to finish connecting the system to the cylinder. For most four-strokes, the different head pipes will create the most noticeable and largest difference in power delivery. Enough so that some brands offer different headpipe options for some models, to suite the power characteristics the customer is looking for.

On the two-stroke side there are pipes and silencers available. These can be bought separately or together, and with some you can even mix and match brands to modify the power delivery to your desires. The pipe and its expansion chamber design can make a huge change on the power delivery of a two-stroke, and some brands offer different builds to achieve either low-down, roll-on torque feel, while others go for a more aggressive snap. Both can be advantage, depending on the terrain and type of riding you like to do.

Silencers also offer a bit of a tuning option, as most motocross models are shorter in design, while a more off-road design is typically quite a bit longer. These once again can fine tune where and how hard the hit of the power is.

How Much To Spend/Materials and Construction

For four-strokes, a slip-on system can run between $300-$500, depending upon the model and materials used. Most slip-ons are typically are made from stainless steel and aluminum, sometimes featuring a little bling in the form of a carbon end-cap.

Moving up the price range we jump into full-systems which are a bit wider ranging, starting as low as $600 but jumping to around $1400, depending upon materials and single vs. dual cans (like on some Hondas). The cheaper systems in this range are made from stainless steel and aluminum, while the more expensive models feature titanium and even carbon fiber. These more expensive models typically offer the same power as their cheaper brethren, but are lighter in weight. For the majority of the public, a stainless/aluminum system will do just fine, but for those that want every weight advantage or bling factory, the titanium/carbon models are available.

With two-strokes however, there aren't as many materials to look at. For pipes, there are different finishes and designs, but most come in between the $200-$250 range and are built out of different forms of steel. Research is really key here, as the products are close in price but all offer a different feel.

With silencers there are a few more options with materials and designs. Price wise, you'll find most motocross "shorties" in stainless/aluminum to be about $100-$120. Moving on to off-road or longer moto-based silencers, you'll see the price rise a bit from $140-$200. The moto versions of these longer models are for a different power characteristic to their shortie counterparts, while the off-road models typically are quieter, have spark arrestors, and offer the most calm form of power delivery. Last up are a few specialty titanium and carbon fiber/kevlar moto silencers, which are lighter and quite exotic. Some are old-school two-stroke race setups and offer a very aggressive hit, while others are more based on four-stroke designs and offer a much broader power delivery. These are definitely pricey, falling in the highest range at about $220-$300.

Product Reviews

Before buying, be sure to do your research and read product reviews. Reviews are a great way to find out specifics about a particular model, user impressions, and things to watch out for. After you've purchased a product and had enough time to thoroughly test it, we encourage you to leave a review for other people to see when they are researching bikes and parts on the web.

We hope you've found this information to be helpful. If you have a question that isn't answered in this guide, the Vital MX Forum is a great place to get advice from knowledgeable riders.

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