Dr. D exhaust


21 replies to this topic
  • KAS

Posted October 06, 2007 - 02:24 PM

#1

Anybody have a Dr. D on their bike? How is it?

The price is very attractive. The stainless/aluminum system is like $500, I might even be able to get it for less through a local shop.

I am also interested if anybody is running the quiet core? If I got a Dr D system, I would like to be able to run it with the quiet core all the time, as one of the main objectives to purchasing a different exhaust is to keep the noise down--some of our races here are very strict on sound levels.

Anyway, if you got one, lemme know what you think. :confused:

Thanks!!!

  • Bigcr

Posted October 06, 2007 - 03:34 PM

#2

I don't run the quiet core, but it's still not that loud. It definately makes the motor more responsive and lively. Their customer service is top notch too.:confused:

Posted Image

  • dirtbikedude614

Posted October 06, 2007 - 04:01 PM

#3

ive got one on my 450 and its a great improvement. I would recomend it :confused:

  • jeffboyd47m

Posted October 06, 2007 - 06:57 PM

#4

I have run the quiet core on my bike for the Idaho City ISDE qualifier. It passed the sound check with 92 db. The bike still ran great too.

  • racerxx276

Posted October 06, 2007 - 07:49 PM

#5

Jeffboyd, what did you run for jetting with the quiet core at idaho city?

  • cowboyona426

Posted October 06, 2007 - 07:54 PM

#6

Dr. D ss/aluminum spark arrested system on my 06, no quiet core. To me, sitting on the bike it doesn't sound any different than stock. But according to a guy I ride with, it really barks when coming through the trees and I'm on the gas.
Performance is great- makes the 06 better all across the band. My only concern is that I'll have to loosen the header to get to the oil filter :confused:
Hey bigcr- how did you get your header and mid pipe to shine like that?

  • Bigcr

Posted October 07, 2007 - 02:06 AM

#7

Hey bigcr- how did you get your header and mid pipe to shine like that?


That was before the first ride. Now it's a pretty shade of blue.:confused:

  • livinloud

Posted October 07, 2007 - 07:13 AM

#8

i run one on my 250f and love it, like ppl said, its not loud! i'd get the newer looking one (the one on the first guys bike)

  • livinloud

Posted October 07, 2007 - 07:14 AM

#9

to get it to shine you take a buffer and polish to it for a long time and its not worth it cuz it scuffs up

  • grayracer513

Posted October 07, 2007 - 07:48 AM

#10

I have one on both '06's, and I'm extremely pleased with them, especilally with the newer version on my latest '06. :confused: :confused: Paid the extra $15 each time for the USFS sparky option. I don't run it often, but I have it. You can remove the screen and run without it, but you can't add it to the ones built without this option, so I went that way.

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  • lou_cano

Posted October 07, 2007 - 08:00 AM

#11

How come you dont see any pro riders using the Dr. D exhaust system on their bikes? If ther are some pros using the product they don't place very well. It seems like FMF or pro circut are the systems to use.

  • KAS

Posted October 07, 2007 - 08:11 AM

#12

How come you dont see any pro riders using the Dr. D exhaust system on their bikes? If ther are some pros using the product they don't place very well. It seems like FMF or pro circut are the systems to use.


Because Pro Circuit and FMF have big advertising dollars to spend.

You do know Dubach has a hand in the R&D of Yamaha's 4-strokes? Thats mainly (besides price) why I'm looking at them. The guy knows those bikes inside & out, so he probably knows whats best for them.

  • grayracer513

Posted October 07, 2007 - 09:33 AM

#13

All I can say is that in the first place, the pipe bolted up as if it was OEM equipment. In the second place, my '06 with the Dr's stainless system has a wider, stronger (albeit smoother) spread of power than my '03 does. It pulls hard from the bottom through the mid-range, and straight off the top. Yesterday, I had it out in the desert for the first time and took off after Junior on a graded road. The bike easily hit the rev limiter in third (I wasn't trying to do that). My '03 falls off pretty hard just before it hits the limit.

  • The Italian Stallion

Posted October 07, 2007 - 12:55 PM

#14

How come you dont see any pro riders using the Dr. D exhaust system on their bikes? If ther are some pros using the product they don't place very well. It seems like FMF or pro circut are the systems to use.

The whole Blackfoot Yamaha team in Canada uses them and they also use RG3 22mm offset clamps. I asked JSRs wrench.

  • MX4Life

Posted October 07, 2007 - 07:30 PM

#15

FMF etc pay the teams/riders to use their product. Doug doesn't, I have the Ti on my 07 YZ450F. Love it and it saved 2lbs...:confused:
http://i176.photobuc...10/IMG_0710.jpg

  • jeffboyd47m

Posted October 07, 2007 - 08:11 PM

#16

Jeffboyd, what did you run for jetting with the quiet core at idaho city?

I ran a 45 pilot, 168 main, needle in stock position and air screw 1.5-2 turns out. This was on my 07.

  • lou_cano

Posted October 08, 2007 - 05:26 PM

#17

So where is the best place to buy a Dr. D system?

  • grayracer513

Posted October 08, 2007 - 07:51 PM

#18

TT Store

  • ThumperKid250F

Posted October 09, 2007 - 10:08 AM

#19

i bought mine from here

http://www.btosports.../DubachExhausts

  • B-LAGO

Posted October 09, 2007 - 12:29 PM

#20

www.motofrugals.com usually has really good prices on the Dr. D stuff. If they dont have it on the website, just call em, and they are usually pretty cool to work with.





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