FMF slip on pipe???

11 replies to this topic
  • MotocrossManiac

Posted September 17, 2008 - 08:11 PM


I'm thinking about purchasing a FMF slip on pipe for my '08 YZ450F. I was curious if anyone has ran a FMF pipe on there 450, and if it's a good exhaust.

  • yamahacrazy_310

Posted September 18, 2008 - 12:57 AM


I run the 4.1 slip on, and when I switch back to my stock pipe I notice a big loss in bottom end. If I was you I would go with a Dr.D pipe. The whole pipe cost just a little more then the FMF slip on, and the pipe makes the bike so smooth. I really want a Dr.D.

  • Slinkyman16

Posted September 18, 2008 - 01:20 AM


that or contact dave ar MRDracing and he can build u a pipe for 400 bucks.. with a lifetime warrenty..

  • Pappy141

Posted September 19, 2008 - 08:36 AM


I have the FMF 4.1 Stainless slip on my 2008...It really woke up the bottom to mid. I'm coming off an 07 CRF-450 and with this mod it's still super smooth compared to the CRF and therefore makes me a faster rider (less fatigue also). The Yammy has much better traction and hook-up. Other than the slip on the bikes needs very little else.

  • IFOL519

Posted September 19, 2008 - 10:10 AM


How good are the mrd pipes?
I ride mostly desert and gp's and I am looking to get a new exhaust system

  • yz450fpilot

Posted September 20, 2008 - 09:44 PM


Get the Dr. D SS full system. I just added this to my 08 YZ450 and I love the way the bike performs with the Dr. D pipe.

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  • jkreu81

Posted September 28, 2008 - 06:57 PM


I hate the way the stock exhaust sticks so far out the back of the number plate.
I wanted something shorter/hidden.
Is the DRD the same length as the FMF???
Anybody got pics of there DRD on a 450???

  • Justin89

Posted September 28, 2008 - 09:11 PM


DR D's are good...I have the FMF 4.1/Powerbomb header on my 06' and it's a monster:p down low

  • grayracer513

Posted September 29, 2008 - 05:10 AM


Anybody got pics of there DRD on a 450???

Posted Image

  • jkreu81

Posted September 30, 2008 - 12:16 AM


:lame: thanks gray, nice bike! Is that an 05?

  • grayracer513

Posted September 30, 2008 - 07:21 AM


Not with that frame. It's an '06.

  • JSanfilippo

Posted September 30, 2008 - 08:00 AM


I'd say the MRD and FMF powercore 4/TI powercore/4.1 pipes stick out the least.

The MRD pipes appear to be the real deal. The guy that builds them will custom make one for your needs and the construction is stainless/aluminum. If you manage to wad one up I believe he'll either fix it or replace it.

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