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Honda XR/CRF50 Complete Exhaust System By
Dr. D Racing
Pipe Test by Fug
We have tested many products here at
www.50ccracing.com but I have never been this
excited to try a modification for my fiddie. See, all my friends and I run the
complete systems on our big bikes and know what a great pipe we have. So when I
got my XR/CRF50 package in the mail, I couldn't wait to try it out.
The first thing that has to impress me, is it a bolt on or do I have to mod it.
The question is, how quickly can you put this system on? I'm a pretty slow
mechanic but still managed to get the old one off and the new Dr.D full system
on in less than 5 minutes for a simple bolt on. The fit of this complete system
is perfect.
The first thing that came to mind was how light the Dubach system felt. I swore
it was half the weight of stock and when I weighed them I got 2.45# for the
Dubach system and almost 5.00# for the stocker. After I rode the stock XR50 with
the new pipe on our test track, I could tell right away this is the best bolt on
product a guy or girl can buy for his stock 50.
This pipe brought our little racer to life. We didn't have to change any jetting
as it was spot on. Performance was increased on the bottom and midrange while it
seemed to just keep carrying through the RPM's all the way to the top.
We then tested this pipe on all our mod units and it worked equally as well on
those bikes. On the mod bikes, most of our test riders felt it was a midrange to
top end pipe. In the drag race test, the DRD pipe consistently beat the other
pipes we have tested on the top side. We also felt on the tight sections of the
track the DRD pipe helped pull 2nd gear alot easier than with other units.
We have run this pipe weekly now for the entire summer and it looks as good
today as when we got it. The construction is spot on and durability is not an
issue as this exhaust should last a long time for the consumer.
Overall, this pipe will be hard to beat, sweet looking, lightweight, performance
enhancing, durability, and priced right at only $249.95 list. It also comes with
a spark arrestor that can easily be put on or taken off depending on where you
ride.
You can contact Dubach Racing Development at:
(951)808-1114
sales@dubachracing.com
www.dubachracing.com
     
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Orient Express Racing/Tiforce exhaust systems
Skip@orientexpress.com
800 645 6521
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I have attached a few pics of the new pipe we are offering with
a stainless headpipe and the first to my knowledge carbon/kevlar canister. The
thing is pretty badass. One feature alot of people like is that it has a
canister mount that can be positioned anywhere along the length of the
canister. This help alot for riders using longer cylinders so they don't have
to wallow out their exhaust mounting bracket. We also have a few other
products we are working on, like a cradle for the XR/CRF that will make the
stock frame alot more rigid as well as give it some much needed strength,
along with a new high seat that really works for riders over 3 feet tall.
Let's face it, we are all sitting on the rear fender so what does adding a few
inches in the front of the seat do? Anyway, here are some pics of the pipe. It
retails for $229 and you can get it at Triple X Motorsports Phone:
321-254-8881 Fax 321-254-3337 or email at
Triple@Bellsouth.net We are also
looking for dealers for this pipe as well as the new products we will be
introducing soon. Thanks for any help you can offer.
Sam Thurston
Triple X Motorsports
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Pipes are pipes, right? Not quite, every pipe looks, acts
and sounds different, and costs different. I don't get into price here, the
sellers dictate that and it changes constantly, but I can get into what I think
of them. I've got a few and have a few opinions, mostly good, and sometimes not
so good.
Pipes reviewed by myself so far are Fast50s, Classic Ultra
SR and JR, and the Big Gun. To follow is the text I scrounged up from various
corners of this website, and we know how I hate to throw anything away. Some is
dated but it's all relevant.
For a quick synopsis, all the pipes add power to the bike.
The Big Gun, Fast50s and Ultima Jr. seem geared more towards a stock to 88cc
motor, the Classic Ultra SR is geared towards a super head or big valve motor.
| Austin Lindberg sent in
this review. His has pipe I have not tried, so we get to take his word for
it. |
| Hey I was reading your
exhaust reviews and thought I'd throw my two cents into the bucket. Two of
my buddies purchased the FMF Powercore 4 with a little gain in mid range
power but off the line and up top there was minimal gain. The biggest
downfall for the FMF I think is that it is quieter than the stock pipe and
is only slightly more powerful than stock with the spark arrestor removed.
Finally, it isn't real nice looking. The can sticks too far out past the
number plates. Another one of my buddies picked up the Pro Circuit T-4
Exhaust System and that is a pipe I really like. Great power out of the
hole, noticeable bump in mid range and the fasted top end that can only be
matched by the BBR. The Pro Circuit is easily the loudest pipe I've ever
heard and gives a real big thumper sound when revved up high. The looks are
a little plain but you don't need lots of flash on a fiddie. Lastly I
bought a BBR. The BBR is my personal favorite. Equal power out of the hole
and in mid range as the Pro Circuit but I feel as though the BBR has a
bigger top end as I weigh a bit more than my buddies and at top speed I gain
a few bike lengths on them all. The sound is a deeper but slightly quieter
sound than the Pro Circuit. And finally the looks are very nice, available
in gold or black it can match any design. |
Bike background: 88cc Takegawa with a cam
and 18mm carb (jetted with the 85 main and needle second notch from the top. Air
screw 1 turn out was working good today at 75 deg and high humidity), and HD
clutch springs. Bike is pretty fresh but has some time on it.
I have no unusual loyalties or owe any
favors to any of these pipe vendors. This is honest in my mind, and you can
trust what you read here to be how I really see it.
  
Fast50s pipe
Great low end pipe that can't be beat off idle or whenever you just crack on the
throttle. Great response and rev's out decently. No complaints about anything,
and it has a nice bark to it. Probably the loudest pipe of the bunch, but its
the oldest and has the most time on it.
Pipe is short and barely sticks out past
the right number plate. Tucks in nice and you won't burn your leg on it. Chrome
finish.
Rating A+ ................my personal
favorite.
   
Classic Ultima Jr.
This bad boy is every bit as good as the
Fast50s pipe which reigns supreme in my opinion. Its bottom hit is a teeny bit
less, but is very very nice and strong. It comes on with a good bark and pulls
hard all the way to the top. No complaints and I'm glad I have it.
It's tons better than the Classic Ultima
for my application of a stock head, I highly recommend it.
Stainless steel construction and it tucks
in real well. Sound level is not the loudest, that honor still goes to the
Fast50s pipe, but that pipe is the oldest and has the most time on it.
One feature that's real nice is the front
and back are two pieces but fit together perfectly, you will have no trouble
making the back bolt. No hammers required! Lyle supplies a spring for security
but you shouldn't need it, and a new exhaust flange gasket. Very nice touch and
if you don't have to have one, get one or you won't get a good exhaust seal, and
as a result loose performance and get backfiring. If you don't have one with
your pipe, they cost about a buck at the Honda shop. Get one now!
Rating A ......................my second
favorite
   
Big Gun pipe
This guy doesn't hit quite as hard off idle, but pulls well in the mid range
after you run up the revs a little bit. It kicks in a little stronger at mid
range and runs out quite well. A mid and up pipe with decent low end.
Pipe is really long out the back, you
definitely know its there. Tucks in so nice it darn near rubs on the frame. I
had to give it a well placed whack with a hammer to bend it to the back bolt. It
fit on the other bike OK, not sure what happened there. Aluminum finish.
Tone is quietest of the bunch, but not like
a stock pipe. It has a distinct and different tone like a bigger bike, not a
crack and a pop like a little bike. Did that make sense?
Rating A .............................my
third favorite
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Classic Ultima pipe
($259.00): This pipe is designed for super head bikes, or bikes with big valves.
The pipe diameter and muffler are frigging huge. When installed on my bike it
did not work very well because I run an 88 S-stage kit from Takegawa and have a
stock head. It had almost no low end, picked up some torque in the middle and
ran out on top pretty good.
Pipe has a large bend at the head that
causes it to stick out farther than anybody would like, but that is part of
their secret for speed. I melted some boot on the head pipe. Adults on XR50's
don't hug the bike with their legs so it shouldn't burn anybody. I don't know if
kiddies can get their legs in there but maybe they could. Something to be aware
of. Stainless steel finish.
Like the Jr., also the front and back are
two pieces but fit together perfectly, you will have no trouble making the back
bolt. No hammers required.
Rating "yet to be determined". I need to
try it on my "Honda Trail Bike" kitted bike because it has a big valve head.
 
Sik50s pipe
This pipe has a unique construction, its steel
painted flat black and the muffler has a chrome insert that aims the exhaust
downward. It's a nice design.
Performance is good and sound level is nice
but not too loud and has a nice tone. I'd rate it behind the Fast50s and Classic
Ultima Jr., but not by much. Heck, I might have been able to tweak the air screw
and get it even, there really is not hardly any difference in these pipes, pick
your poison and enjoy!
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Powroll muffler spacer alone:
Useless, does nothing. If it wasn't included in the big bore kit I wouldn't
have it. It does look cool though. I had it on before I installed the big bore
and noticed no change.
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The article below is from way back when I was
just getting started a couple years ago. Since then I've discovered its great
fun hopping these guys up and changing them. It's kind of like reminiscing.
 |
The Fast50s pipe is small pipe diameter
compared to other brands, but dynamite comes in small packages. I have had
this pipe on all kinds of bikes from stock to whacked and it works darn good
on all of them. Rock solid bottom that hasn't been beat by any other pipe
I've used, and it revs out fine. |
It's here, Fast50's Speed Pipe:
OK, I admit I'm not a huge fan of changing pipes on bikes. I figure they
were set up from the factory with a pipe that delivers good reliable quiet
performance, and it seems like the boys that sell them don't want to give up
specific jetting information so you can't just bolt it on and go, but this is a
high performance arena so it had to be done. Craig Mason was very helpful and
told me his jetting, listed below.
Compared to the stock pipe, it feels like I took a rag out of
the muffler. The pipe delivered a more responsive feel, a snappier delivery if
you will. It also popped the front end up easier than with the stocker so it is
punching harder. It's not night and day like a big bore kit, but it helps. Does
it help $199.95 worth? Yes, do it, and another big plus is it really sounds
cool. Not obnoxiously loud. but you know it's there. The looks are displayed on
the home page thumbnails.
Installation tip:
The pipe is held on at 2 points, two nuts up at the head, and one
bolt at the muffler. Make sure you have the head pipe on square and tight before
bolting the muffler. When it is square the muffler will need to be forced down
about 1" to make the bolt. With that arrangement it sealed well and I had no
more backfiring problems. This seal is important for peak performance.
Jetting: Craig from
Fast 50's says raise the needle (drop the clip) all the way, stay with the 58
main jet, and only turn out the air screw 1/2 turn. I got more response with it
out 1 1/2 turns, but that's easy to tweak. I also have the pod air filter on
which allow freer breathing, you can hear it sucking air now.
Weight: The shiny
pipe is much lighter, not that it matters much on this little pig, and I don't
know specifics but I wouldn't be surprised if it was a couple pounds.
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Here is a review from Atom RoTTen on XR50
exhausts. I think it may have been originally posted in Thumpertalk, but we also
wanted it up here for reference. It's very informative and worth the read for
anyone looking at an exhaust and not having a clue where to start.
Matt Wut Up?
Good to ask questions for sure! If I were running an exhaust on a 50cc barrel
motor I would go with the BBR unit or my personal choice the BIG GUN xr50
system.
The BBR unit is sweet looking and gives some performance features but I feel it
is a little over kill with all the heat shields unless you are using this system
on an XR built for a kid. The tunability showed only small changes and I rather
be riding instead of trying to fine tune an exhaust that is good the way it
comes. The big plus in my book is the fact that it has a removable Spark
Arrester. The last thing you need is an impounded bike and fines for a unit that
doesn't have this option! The part I don't care for on this unit is the weight.
The BIG GUN unit is my personal choice. It is a good looking unit, not super
flashy but clean. Performance is real good all through the range of the motor.
Big pluses with this unit are removable Spark Arrester and it is lighter than
most units. Nothing stood out that I didn't like.
The Fast50's exhaust works well with the 50. Good all around power like the 2
above. Big down fall in my book no spark arrester! Decent pipe for the track but
not in a Spark Arrester enforced area.
The cheapest of all the exhaust is the FMF. It is similar in the power
department as the Fast exhaust but at 139.00 you cant beat it either. The big
down fall again, no spark Arrestor!
An exhuast is a given to any 50 owner over 100 lbs. The extra bucks you put out
on the more expensive units may save you big down the road but you have to
decide for yourself what you think is best.
Go Big!
Atom RoTTeN
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I was reading on your product
reviews about aftermarket pipes.
I recently picked up the FMF
powercore 4 pipe used off ebay (maybe 1hr of use, had 0 color change, even
at the head, now after 2hr there is a bit of the rainbow effect) for $112
I first ran about 2 tanks
through my xr50 all stock. Things were cool, but you could feel that it
needed something up top.
The next tank was with the
spark arrester/baffles removed (3 bolts on the end of the pipe, and pull
out - 2min worth the work) The change was noticeable, mid to top range
was opened up, with nearly no change in the bottom end. Most noticeable
change was the amount of noise being pushed out.
After that tank, I installed
the FMF pipe. Lost a little torque from idle to about 1/6th of the power
band. Only takes a second to get the power built back up. >From there a
VERY noticeable increase in low-mid to redline power. 2 of my buddies
were also running the stock pipe without the baffles. 1 recently put his
back in for urban play, and my fmf is slightly quieter. Only time you can
notice my pipe over his, is during wide open throttle up the streets. If
you stay below 3.4 throttle, it's quieter then stock. The FMF pipe also
has a removable spark arrester available for $30. An added bonus over
stock, and most of the other aftermarket pipes is, the fmf directs exhaust
flow twards the ground. So you don't slap your buddies in the face with
burnt fuel when they ride behind you.
---Rich---
ETS or bust!
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