FMF Q4 Ti Slip-On Exhaust – Review

Are you having troubles at the track or at a hare scramble with your bike being too loud to pass the sound testing? If you do then I have the exhaust for you. The FMF Q4 Exhaust is a very reliable pipe for getting the db down to a 94 or even lower! I put this exhaust on my ’07 yz250f and it does what it’s suppose to. It gets my bike down to 89 decibels and has more power than my stock exhaust.

Ti Q4 Slip-On Exhaust
FMF Ti Q4 Exhaust

The FMF Q4 also comes with a USFS-approved spark arrestor for woods racing which is required for all AMA sanctioned hare scrambles and enduros. If you trail ride then you’ll want this because all state trails require spark arrestor by law as well. The AMA is changing some rules next year to keep the sound down, and the decibel rating for Motocross is now going from 96 to 94 for the 2011 season and so on. Most pipes do not get down that low. The power output from the exhaust is amazing. I have ridden with other exhausts that are meant for straight motocross racing without the spark arrestor and they still do not compare to how the Q4 works for me. It makes the exhaust come out in a straighter line, which allows it to flow smoother. This also allows the bike to run better and makes the bike easier to ride faster.

Me Racing With The FMF Q4

Overall it is an extraordinary exhaust between the power output and low decibel ratings for racing. The FMF Q4 exhaust is on the pricey side if you get the lightweight Titanium version like I did, but in the long run it’s worth it because you won’t be failing any sound tests. It will also help smooth out the power, allowing you to ride faster without working as hard.

-Mike Brumm

Click To Buy My FMF Q4 Exhaust

AC Racing Subframe – Review

A Little About the AC Racing Subframe

The AC Racing Subframe is a great way to lighten your old 2-smoke or 4-stroke by a couple pounds. The AC Racing subframe is constructed of strong aluminum tubing. Although the aluminum tubing weighs less than your stock frame, it’s more durable and less likely to twist in the occurrence of an accident. If you’re tired of that nasty and rung out paint job on your stock subframe or if your subframe is bent, the AC Racing subframe is a great alternative from buying a new OEM subframe that can cost more than $300.

AC Racing Subframe

Why to Buy the AC Racing Subframe?

The AC Racing subframe is not only cost-effective, but it offers greater durability and has a clean look for the bike. As a matter of fact, the AC Racing subframe almost looks so nice it’ll make you consider wanting to run your bike without a rear fender or number-plates just to show it off. These are two of the reasons that I am using this subframe in the “1996 KX250 Rebuild- A Junkyard Wildabeast Project,” which will be complete soon. Another great thing about this subframe is the high quality welds with perfect beads and mounts for the rear fender and airbox that won’t rip off when you lay the bike down in a corner. The AC Racing subframe’s lightly polished aluminum won’t rust due the fact it’s aluminum. Overall, the AC Racing subframe is a a great alternative to the OEM subframe and it won’t break the bank.


Get Immediate Silence From The FMF Turbine Core Spark Arrestor – Review

I love to ride my dirt bikes, and the thing that I would hate the most is to be shut down by some no-fun, party poopin’, selfish brat because they think my bike is too loud. It’s pretty sad considering how quiet most dirt bikes are compared to trains, jets, and, of course, harley’s. This is what has come down to in the sport of motocross though, so if you want to continue riding then you better do something about it! A simple and inexpensive way to do this is by slapping a spark arrestor silencer on your dirt bike. In fact, you need a spark arrestor to ride at most state trails, as well as enduro and harescramble racing.

Turbine Core 2 Silencer Off Road Series
FMF Turbine Core Spark Arrestor

Even worse…. public tracks, riding parks, and popular trails are being shut down because of noise issues. I’m not a big fan of putting a spark arrestor on my bike just because I don’t think dirt bikes can start fires very easily. That is, unless you literally pour gasoline on a tree and stick the exhaust right up to it. I DO feel more comfortable using one at certain riding places though, because I don’t want to get in trouble because some grouchy neighbor tattled on me. So, I got me an FMF Turbinecore Spark Arrestor to quiet my lovely 2-strokes down.

I used this spark arrestor on my KTM 144SX and, YZ125, and CR125, and the results were all very similar. One of the first things that comes to mind when thinking of a spark arrestor might be that it would take away power from your bike. I thought it would, but I had to use it if I wanted to ride in certain areas.

How Loud?

The first thing I noticed when I put the FMF Turbinecore on was that the bikes idled a lot quieter. I could actually talk to someone next to me with it on instead of having to shut my bike off. I used it for trail riding (a great combination with Bark Buster Handguards), motocross racing, and just for playing around. When I raced with it on my KTM I asked my dad, who was watching the race, how loud my bike was, and he said it was probably the quietest bike on the track. This was surprising to me because KTM’s are usually loud, especially when they have aftermarket exhausts on. FMF states that this silencer lowers the sound output to about 92 decibels. I didn’t have a sound meter, but can definitely say it was close to 90 db.

My YZ125 on the other hand, was a little bit different. It idled quieter, but it still had a little bit of that 125 snarl once it got on the pipe. When I was riding in the woods you would barely be able to hear it. The exhaust had to be directly pointed at you for it to be loud. The result was the same for my Honda 125.

What About Power Loss?

This is the biggest question when deciding whether to buy an aftermarket spark arrestor or not. I was scared that it would take away some needed power from my bikes, especially with what little power these 125’s had. From all the riding I did, I didn’t notice any power loss on the bottom-end. The mid-range still felt the same as before on all of the dirt bikes I tried. For the top-end power, I will say that it felt like I lost a little bit of power up top. It really didn’t feel like much though, and it might just be in my head because the bike was quieter. So all in all the power surprisingly did not really change. You would have to use a dyno to see the actual difference in numbers.

Is It Really Worth The Money?

Well lets look at what you will be able to do with this silencer on your bike… You will be able to ride on state trails because it has a spark arrestor and is USFS Approved, you can race enduro’s and harescrambles, it will make your neighbors happy, and most importantly it will help keep more riding areas open. Plus, the FMF Spark Arrestor is a whole lot cheaper than any four-stroke exhaust. If you are riding in noise-conscience riding areas then this is the part to get if you want to continue riding your dirt bike. Good luck!

Buy My Dirt Bike An FMF Spark Arrestor Here

-Tom Stark

Dirt Bike Trails Protection

Dirt bike trails can be a lot of fun for any rider, but whats not fun is your bike getting damaged, or even worse, you getting injured. That is why there are many options and add-ons to protect you and your bike. Any rider that has hit a tree or another similar object while blitzing through dirt bike trails would have to agree that it hurts and they wouldn’t want to do it again (Unless of course you are on the show “Jesse James Is A Dead Man” and one of you ‘deadly’ stunts is riding a dirt bike over an off-road course). Anyway, protecting you and your dirt bike for riding on trails can save you some big money, especially if you “accidentally” tip over a lot. Don’t worry, these tips will help keep your bike in better shape in the end, and yourself as well if you choose to listen to me.

Protective Gear (For You)

BJ22 Ballistic Jersey
EVS Body Armor

The first thing to do before you go trail riding on your dirt bike is to buy protection gear for your body. Your bike may be expensive, but it’s much more beneficial if you save your own butt rather than the dirt bike. Remember, the bike is replaceable, you are not. At least not in this life you aren’t. The basic protective gear is obviously a DOT approved off-road helmet, a good pair of motocross boots, and some long clothes. Now to really protect yourself from all of those trees, rocks, roots, and other hard objects that you would hit when or if you fall on the trails, good body armor is the best protection you can get. Some people may say that they are very uncomfortable to wear, they are itchy and hot, or they’re just plain annoying to wear while riding. Most of those people probably have never even tried using one while trail riding, let alone even trying one on.

Body armor/suits are good for any kind of riding because they are full upper-body protection and many come with kidney belts that help prevent too much back stress, which is somewhat common when riding on dirt bike trails because you sit down a lot. I use one when I go racing, trail riding, and when I ride my dirt bikes with friends, and I don’t really have anything to complain about. I use a BJ22 Ballistic Jersey and will say that it was a good investment. I won’t go into too much detail about it, but will say that it is awesome protection. It doesn’t bother me much and it’s not extremely bulky. Fortunately this body armor has good ventilation and is still usable in hotter conditions without making me die from sweat. This suit comes with chest protection, shoulder pads, elbow guards, back-plate protection, and a kidney belt. If you want to give your upper body a break when you wipe out or hit something, try putting on some armor; your body will like it.

RC2 Race Collar
EVS Race Collar

Another good protective piece of gear for trail riding is a neck brace/collar. This is another thing that is neglected, especially when riding on dirt bike trails. Most people that have one only use it when they ride on the track because that is usually the most dangerous type of riding. But if you are blazing through dirt bike trails there is a good chance of injuring your neck as well if you crash. I use an EVS Race Collar and am glad I got it (Click here for a review that I made for this neck collar). It can save a neck injury or collar bone if you fall and land on your head or if your bike hits you. I always ride with it on and will say that I never notice it. The only time it restricts the head is when you turn and try to look backwards, otherwise it’s great protection with good comfort. Trust me when I say these will pay for themselves probably after one bad crash.

Protective Gear (For Your Bike)

Once you get all of the necessary equipment for yourself then you can start protecting your precious bike. Probably the most important part to protect on a two stroke dirt bike for trail riding is the pipe. The head pipe/expansion chamber can easily get damaged if you crash, especially if it hits rocks or other hard objects. A simple way to keep it from getting badly dented or cracked is by buying a pipe guard. E-Line has Pipe Guards that will fit many two and four-stroke dirt bikes. These will make your pipe last much longer than without having one. It’s a cheaper alternative than buying another new pipe, and they hardly add any weight to the bike.

Hand guards are one of the most popular dirt bike modification for trail riding because they protect your hands from hitting annoying trees, weeds, branches, and other objects in the woods that would hurt your hands. Pro Taper makes many different Hand Guards for pretty much every off-road bike possible. They have many models with several colors to match your needs. If you want to protect your hands from roost and trees, you need some hand guards!

Devol Engineering makes Front Disc and Rear Disc Guards to protect your brake rotors from getting damaged or bent from hitting rocks and other stiff objects on the trails. This is a cheap way to keep your brake discs/rotors safer and cleaner.

Works Connection has Aluminum Skid Plates that will protect the underside of the engine and the frame. This is another common modification that trail riders do to their dirt bikes because logs and rocks can really do some damage to the under part of your bike. Stop the wreckage with a skid plate before it’s too late. They are light, easy to install, and don’t add bulk to your bike.

Radiator Guards can help prevent twisting and breaking of radiators that result in costly repairs or replacement. Works Connection also has Radiator Braces that will fit almost every name brand dirt bike with radiators out there. These Guards are a lot cheaper than buying new radiators and will increase the longevity of them.

Protecting you and your bike for trail riding is smart, it will save you money, and most likely a lot of pain. There are many more parts to add on to your bike to protect it, but these are the most common modifications that riders have.

You can click on the links or go to Amazon to view these.

Thanks for viewing, and good luck protecting yourself and your bike. Stay safe, and have fun riding.

-Tom Stark