What is the BEST exhaust?

22 replies to this topic
  • javelinmxer

Posted December 23, 2001 - 06:16 PM


I recently purchased a 2002 YZ426 and I would like your opinion as to the best performance exhaust on the market and why. Big Gun exhaust has given me a discount price on their system, but I want to make sure I'm not missing the boat b/c this is my first 4 stroke. Plus I need all the power I can get to qualify for Loretta's in the A class. So please help me find the most horse power.

  • motoman393

Posted December 23, 2001 - 06:25 PM



  • yzfguy

Posted December 23, 2001 - 06:40 PM



2002 426

  • yzernie

Posted December 23, 2001 - 07:08 PM



  • thumpy

Posted December 23, 2001 - 07:33 PM


Thunder Alley. Do a search and read the comparison between the Dubach pipe and the Thunder Alley pipe. Buy any pipe you feel comfortable with, if it isn't a Thunder Alley you'll be looking at one from a rear view!

They're hand made, excellent quality, unbeatable performance, and less $ than the brand named pipes.

I found out about them accidentally. I was at a track (Lake Elsinore) and they were there with a batch of their pipes and they were letting people demo pipes! When have you ever been able to demo any after market product?? So I took them up on it and headed for the track. Yada, yada, yada, I now own one and when the bike gets sold the pipe will stay with me for installation on the new one! You've been warned.

  • WileE1

Posted December 23, 2001 - 08:23 PM


Go with Dr. D.
Brought my 2002 to life

  • Big_Bang

Posted December 24, 2001 - 10:37 PM


Stock is still the best power to noise ratio and up until Doug Dubach started making pipes he thought stock was best too. I have tried FMF White Brothers and DSP and now setled on DR.D not so much for performance but for the USFA spark arrester. If you have no need for a spark arrester stick with stock you won't start your pants on fire as much. Of all the pipes I've tried the DR.D improved throttle response the most while adding a bit more surge off the bottom. You have to justify if four hundred and some clams is worth it for a bit of performance. Personally I would buy a 30 gallon drum of VP MR-2 and rejet accordingly. There is more to be gained here then with any pipe.

  • Amador

Posted December 24, 2001 - 03:34 PM


Yeah, buy the DR.D. unless of course you want to keep up with the guy that has the Thunder Alley :) !

  • mxracer553

Posted December 25, 2001 - 02:53 PM


I love my big gun system. Lots of bottom end. The Dr D is a good system and so is the R4 white brothers

  • h_bomb

Posted December 25, 2001 - 04:00 PM


It all depends are you going for looks or performance.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • dezracer

Posted December 25, 2001 - 06:46 PM


Pro-Circuit T-4 rocks. Sounds impressive and performs great!

  • Miller35

Posted December 26, 2001 - 09:01 AM


hey i found a company out of texas called D&D exhaust these things work great soon as i find the book i ordered it out of i will post a url

  • Shawn_Mc

Posted December 26, 2001 - 09:51 AM


Ive got a thunder alley pipe. Sold my Pro Circuit T4 for it. Rode both pipes back to back. Doug Dubach actually spent time checking my pipe out at Saddleback on 12-9. My advice, go thunder alley. Makes more power and is more rideable than a larger diameter straight pipe. Also fits like a glove. Contact Bob Murray @ 559-584-8109. He'll send you a pipe via ups with the bill inside.

  • brain

Posted December 26, 2001 - 12:46 PM



  • Taraker

Posted December 27, 2001 - 10:05 PM


Waiting on my new Thunder Alley pipe now. Going solely on you guys recommendation! :)

Can't wait to bolt this baby on, if it is half as good as ya'll claim I am going to be impressed.

Have digital camera so I will take allot of pics are post at my web-site (see signature)

  • Shawn_Mc

Posted December 27, 2001 - 10:19 PM


TARAKER raise the needle a position and go with the larger main that will come with the pipe. You will be quite happy :)

  • Taraker

Posted December 27, 2001 - 10:52 PM


I am in Dallas Texas, sea level (okay, maybe 600ft) , you think I need to change the jetting?

  • Mxer303

Posted December 27, 2001 - 01:00 PM


Taraker- I am thinking of getting one of the pipes also, how long did he say it would take to get yours? I would also just be going by the recommendations on this board, hope what is said about the performance is true.

  • Taraker

Posted December 27, 2001 - 02:38 PM


I ordered the pipe a two weeks or so before Christmas & he turned in a couple of days, shipped on the 21st but it's still stuck on a UPS truck somewhere, shipping from California to Texas during the Christmas season can be pretty lengthy I guess. Hey, if it takes 3 weeks for a customer pipe &%$#@!, it's worth the wait from what I've heard.

  • sirhk

Posted December 27, 2001 - 03:29 PM


I demoed one of those Thunder Alley pipes over the summer and don't worry Taraker, you won't be disappointed!!! I don't have one cause I'm still finding other stuff for the money to go to but eventually I'll have one also!!

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