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GP Inspired Sportbike Exhausts You Can Buy Today

GP Inspired Sportbikes Exhausts You Can Buy

When it comes to motorcycle enhancements and buying aftermarket motorcycle parts, the exhaust is one of the number one upgrades riders choose to install on their bikes. The king, if you will. In particular, when riders are looking to improve performance, power and additional aesthetic appeal, I think it's the way to go - especially if you're not a fan of that oh-so-hated sewing machine sounding stock exhaust.

But hey! Not to worry, there's plenty of exhaust options available. Of the many slip-on and full exhaust systems sold by an online motorcycle parts store, the GP style, which derives its name and appeal from top-level Moto GP racing, is quite a popular option. The sportbike GP style exhaust is generally characterized by short, low mounted mufflers and huge sound.

Many are constructed of raw or bare metal and sometimes put together with exposed welds for that one-off look. GP style exhausts leave behind the traditional long muffler in favor of an artfully constructed stubby metal muffler that...roars. They're truly head turners - mostly because they're generally crazy loud!

These next four brands are popular for their GP-style motorcycle exhausts:

M4 GP Exhausts

M4 GP Exhaust
M4 Black Satin GP Slip-on Exhaust

Texas-based M4 specializes in performance exhaust systems, taking great care to fine-tune their wares for optimum performance gains. They have a variety of full systems and slip-on exhausts, of which their GP-styled options are well-known for granting a decent amount of power and providing window shattering sound.

The M4 gp slip-on systems are a great option for those looking to balance price, ease-of-installation, sound output and performance increases. They're well known for a matte black gp canister but offer a wide array of standard style exhaust systems that can often be seen on podium topping M4 supported race teams.

Ever wonder where the name M4 comes from? We did an interview with Kyle Martin about that topic!

Competition Werkes GP Exhausts

Competition Werkes GP Exhaust
Competition Werkes GP Style Full Exhaust

Competition Werkes bills themselves as the "premier manufacturer of sport bike accessories," and their GP-style exhausts most assuredly fit this label. Their slip-ons are simple to install, usually requiring just a bolt to clamp on. They help riders save on weight, don't compromise ground clearance, improve sound and grant a nice boost-to-engine performance to boot.

They are most notably known for their 'bare metal' style Competition Werkes GP exhaust system and use shotgun style canister outlets that replicate the real race look better than most. Mostly available in slip-on formats, they do provide the occasional full system. We definitely dig these artfully constructed boutique Competition Werkes exhausts.

Hotbodies Racing GP Exhausts

Hotbodies MGP Exhaust
Hotbodies MGP slip-on Exhaust

Hotbodies Racing's newest addition is a line of motorcycle exhausts. Hotbodies MGP Exhausts are made "proudly in Italy," these exhausts feature a light and aerodynamic styling that simultaneously reduces bike weight and drag while providing improved sound and upping horsepower.

Available in a slashcut megaphone or shorty shotgun style stainless steel or carbon fiber wrapped cans, Hotbodies MGP slip-on exhausts are available for most major Japanese sportbike brands as well as Ducati and BMW.  While you won't see the biggest gains in horsepower or torque, the MGP exhaust line will add a great aftermarket exhaust note and an even better aesthetic appeal to your bike. Their easy to handle entry price will make you smile, too!

Akrapovic GP Exhausts

Akrapovic GP Exhausts
Akrapovic GP Style Slip-on Exhaust

This world famous Slovenian brand has supplied racing teams around the globe with top quality exhaust systems and they have a reputation for high-end design. Within the Akrapovic exhaust range, they do have a range of GP-inspired exhausts, intended for use by demanding riders who want the best and are willing to pay for it.

Though specifics on their exhausts vary, the overall trend with Akrapovic is that they are precision crafted from high-quality materials like titanium and carbon fiber while offering increased power and torque, while reducing the overall weight of a bike. Not to mention that signature Akrapovic sound come with every exhaust system! Read more about Akrapovic's full product line up.

Slip-on Exhaust or Full System?

Now that you've decided on the style and possibly the brand of GP exhaust you want, there's a whole other big decision to be made: Should you install a slip-on exhaust or a full system exhaust on your motorcycle? Well...Generally speaking, a slip-on is cheaper and requires less support accessories (like a fuel controller) but it won't give you nearly as much usable power as a full exhaust system will.

It's possible to think of a slip-on as just an exhaust for looks and sound (with some added power benefit). Certain slip-on exhausts that remove the exhaust box/cat actually will produce a good amount of power so this decision will vary from bike owner to bike owner. Full exhausts are generally best for the pure performance junkies, track riders and racers. I mean, how much power do you really need on the street? We've put together a nifty slip-on vs full system guide that will go into more details on this topic.

Do you need Power Commander?

Dynojet Power Commander VA full exhaust generally requires the purchase of an additional fuel controller, like Dynojet Power Commanders, that comes with an additional investment. Slip-on exhausts are a different story but you'll get more performance out of your bike with a fuel controller installed. Note that it's not an absolute requirement for slip-on exhausts.

So you got a Power Commander, now what? You'll also likely need smog block off plates in addition to an exhaust for the fuel controller to work properly. Remember that adding a fuel controller or or other supporting mods isn't just about meeting requirements...its about the tune. The tune can be done through various loaded maps, an auto tune attachment or through an expert dynotune center.

A properly tuned Power Commander will ensure smooth power delivery and curb symptoms such as backfiring or overheating. You'll have more usable power and a better riding experience if your motorcycle is properly tuned - and this matters when using a full or a slip-on exhaust - so don't get a full system and then realize you're out of money to do what's necessary to get the full benefits. Plan accordingly. We go into more details about what a power commander is and what it does in our guide.

So, why not get a full exhaust? I suppose the answer to that one is: money.

And add a High Flow Air Filter, Maybe

K&N High Flow Motorcycle Air Filter
It's no secret that leading motorcycle filter companies like K&N produce a wide variety of aftermarket high flow air filters that are designed to flow more air (and, theoretically, more horsepower) as well as being washable and re-usable. Unfortunately, more air in can sometimes throw off the delicate stock ecu ranges (especially when paired with an aftermarket exhaust) and then you're going to be overheating and spitting fire (and backfiring, popping) and all sorts of other squid-ly noises. Eh.

Air filters can be an important part of an overall power mod strategy when properly supported with a fuel controller to make sure to get an upgrade plan together before executing! Also, be careful not to buy 'race spec' filters and then run them on the street - that's a no no.

Browse, Research, Ask then Buy

Aside from the obvious online store option (and reaching out their customer service team), you can also shop for an aftermarket gp exhaust system by watching videos on YouTube or by visiting a bike night or by going on a ride and seeing what people have on their bikes already. It'll most likely give you some great ideas for your own motorcycle! In short: get out and ride, do some research online and then pull the trigger on that new GP exhaust!

By Daniel Relich

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