All Things Moto! Dirtbike Forums  

Go Back   All Things Moto! Dirtbike Forums > Dirt Bike - ATV - Suspension Forums > 2-Stroke Dirt Bike Forums > 2-Stroke Dirt Bikes - Honda

Reply
 
LinkBack Thread Tools
  #1  
Old 12-08-2009, 09:19 AM
Novice Class
 
Join Date: Jun 2009
Last Online: 10-08-2013 08:03 PM
Location: VA
Posts: 82
Default New fmf fatty with dents in if for fitment?

Well i just got my second pipe in that i ordered for a CR125 2001 model from rocky mountain .Just wondering who else has gotton the fmf fatty for this bike and did it have dents in it on the inside of the pipe facing the engine?This is really bugging me.The only reason i got the fmf fatty is because in erric gorrs book it says the fatty is the way to go for a 134 big bore.Please help
Reply With Quote
  #2  
Old 12-08-2009, 09:59 AM
cowboyona426's Avatar
JOATMON
 
Join Date: Feb 2003
Last Online: Today 11:23 AM
Location: Newport, WA, USA
Posts: 9,773
Default

I'm guessing those dents aren't supposed to be there... never seen an expansion chamber or header pipe that had dents in it brand new unless it had been dropped or something.
Reply With Quote
  #3  
Old 12-08-2009, 02:02 PM
dogger315's Avatar
ATM! Pro Class
 
Join Date: May 2009
Last Online: 08-31-2019 06:04 PM
Location: CA
Posts: 2,518
Default

Quote:
fmf fatty ...dents on the inside of the pipe facing the engine
That is normal for this pipe on late model Hondas. I had a Fatty on my
2000 CR250 and the engine side had a large flattened are (looked like
a big dent). I called FMF and they said due to the increased diameter
of the chamber body (thus the name "Fatty") and the tight fit on the
Hondas, "relief" areas had to be created in order for the pipe to fit.

dogger
Reply With Quote
  #4  
Old 12-08-2009, 02:45 PM
Novice Class
 
Join Date: Jun 2009
Last Online: 10-08-2013 08:03 PM
Location: VA
Posts: 82
Default

Thanks dogger,here are some pics of the pipe what should i do?

2001 cr125 fmf fatty pipe dents - E2S
Reply With Quote
  #5  
Old 12-08-2009, 05:51 PM
dogger315's Avatar
ATM! Pro Class
 
Join Date: May 2009
Last Online: 08-31-2019 06:04 PM
Location: CA
Posts: 2,518
Default

Quote:
here are some pics of the pipe what should i do?
Bolt it on and rip it up. I'm not sure about the first picture, but
the area in the second picture looks just like the flat spot on my
250 pipe. Notice how uniform the shape of the "dent" is? When
you mount it up, you will see why it's needed. As far as the dent
shown in the first picture, give FMF a call to be sure.

dogger
Reply With Quote
  #6  
Old 12-28-2009, 09:29 PM
Novice Class
 
Join Date: Jun 2009
Last Online: 10-08-2013 08:03 PM
Location: VA
Posts: 82
Default

Well finally got around to putting the pipe on and a warning to all ,the pipe doesnt fit on there very good at all.If i had to do over again i would get the pro circuit pipe setup!!!Well the dents were for water hose fitment and around the motor.Thats not the worst part the silencer doesnt line for nothing,worked on it for a couple of hours,also the kick starter hits the pipe also!!!!I wished someone would have posted this somewhere before i got this pipe with pics because if i had seen those dents i wouldnt have gotten this pipe to begin with. DO NOT GET THIS PIPE for a 2001 CR125!!
Reply With Quote
  #7  
Old 12-30-2009, 07:12 PM
Welcome To ATM
 
Join Date: Dec 2009
Last Online: 05-01-2010 10:07 PM
Location: South Carolina
Posts: 3
Default

Wow thanks for posting this, I have an 01 CR125 and wasn't sure if I wanted the fatty pipe or the pro circuit pipe. I guess I know now
Reply With Quote
  #8  
Old 01-02-2010, 01:50 PM
ClosedCasket's Avatar
Expert Class
 
Join Date: Apr 2007
Last Online: 07-02-2014 12:30 PM
Location: Raleigh NC
Posts: 503
Default

Pro-circuit is the only choice.... Every time.... Without question.....
Reply With Quote
Reply

  All Things Moto! Dirtbike Forums > Dirt Bike - ATV - Suspension Forums > 2-Stroke Dirt Bike Forums > 2-Stroke Dirt Bikes - Honda


Thread Tools


Similar Threads for: New fmf fatty with dents in if for fitment?
Thread Thread Starter Forum Replies Last Post
yz 250 front pipe fitment yam96 2-Stroke Dirt Bikes - Yamaha 3 02-16-2009 07:44 PM
Wheel Fitment... MotoCruse 2-Stroke Dirt Bikes - Yamaha 2 03-14-2008 03:55 AM
Chest Protector Fitment Deak General Discussion 0 04-17-2005 08:28 AM
Factory Fatty Vs. Fatty redryder250 2-Stroke Dirt Bike Forums 4 09-28-2004 07:55 PM
Difference of FMF factory fatty or FMF fatty? mattdcs 2-Stroke Dirt Bike Forums 13 06-11-2004 10:48 AM


All times are GMT -6. The time now is 08:59 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright ©2002-2020, JDub Consulting, Inc. All Right Reserved.