Anyone try an FMF on the 2010 450

3 replies to this topic
  • Thumper38

Posted December 30, 2009 - 08:04 AM


Has anyone tried the FMF 4.1 full system on there 2010 450 yet? It sure has the cool factor going on but I still need some info before I pull the trigger!

  • jeff14

Posted December 30, 2009 - 08:31 AM


I have the fmf Ti slip on pressently with the insert ring installed. It mellowed the low a tad helped the over rev some . Nothing special. Although it sounds Great if that matters. So I now have the mega bomb head pipe & mid on the way. It has plenty of power ,Just want to mod the delivery up top, to stretch gears out.We shall see. Although In good track conditions I actually dont mind the low end snap. This week I will start to try out some tuner settings.The fmf slip on is apx 1 # lighter than stock. jeff

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • Thumper38

Posted December 30, 2009 - 08:57 AM


Thanks Jeff please keep us posted on your findings with the header!

  • Shogren65

Posted December 30, 2009 - 09:11 AM


My complete system just shipped since they switched the Megabomb to the pot design. Only way its getting tested though is on the ice so. Well see when it comes in.

Related Content


Wilson the Blue Privateer by jetfuel

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  50 replies

James Stewart back on a YZ450F by YamaLink

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  47 replies
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info

  • 0 replies

Michigan Motocross Tires by 288yz450

Dirt Bike   Dirt Bike Regional Discussion   North
  • 1 reply

yz250x vs 450 4t comparisons (preferably desert riding) needed by JakeNorthrupYZ450F

Dirt Bike   Make / Model Specific   Yamaha   Yamaha 2-Stroke
  • 9 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.