Dr. D Pipe for my 01 426

7 replies to this topic
  • cahillmd

Posted November 28, 2001 - 07:42 PM


I put the pipe on a couple of weeks ago and I have one race on it so far. All I can say is AWESOME!!! Everything that they have written or said about the pipe is true!!

  • 426_Pilot

Posted November 29, 2001 - 05:16 AM


How much does it cost, and is it as simple as bolting it on? In other words, jetting?

  • SoundChaser

Posted November 29, 2001 - 06:59 AM


I also have the DRD pipe and agree w/ cahillmd, this pipe totally rips!

It was a little under $400 bucks, but worth it. The construction is top notch and the performance gains make it worth it in the end. A buddy of mine is getting the Thunder Alley pipe soon and Im anxious to see how that compares after all I have read here on TT. Yes, it is simple as bolting it on. It took me about 10min to install and no jetting changes, though I had already lowered the needle by one setting. :)

  • MotoHero

Posted November 29, 2001 - 10:16 PM


That sounds unusual to lower the needle (lean) on this motor. With a free flow exhaust sure seems more in need of enrichening both low and high? Just Wondering

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  • SoundChaser

Posted November 29, 2001 - 03:06 PM


I agree with your assessment, but I don't experience any bogging off the bottom that seems to be plaguing some of the others that I read about.

  • thumpy

Posted November 29, 2001 - 05:45 PM


I'm looking forward to that comparison (Dr.D & Thunder Alley). They're aren't any visual ques to go by with the Dr.D pipe so I don't know what they're doing to improve flow. The Thunder Alley pipe/philosophy makes a lot of sense and performance. Let us know how that turns out. It's very rare that we get to compare stuff side by side.

  • yzfguy

Posted November 29, 2001 - 06:18 PM


the dubach pipe has 4 "step ups" which improves flow, Doug explained it to me..he said he was able to increase flow a little.. but the step ups is the key... he also told me the jetting trick is to use the next size leaner needle.. i put the needle in along with the pipe.... big big big improvement! cleaned up the whole powerband......

  • thumpy

Posted November 29, 2001 - 07:20 PM


Ahhhhhhh Haaaaaaaaa! This principle is very similar to the Thunder Alley philosophy. They use a megaphone to create a vacuum which actually sucks the exhuast out of the head improving flow dramatically. I'd be very curious to see how they perform side by side.

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