2016 Yamaha YZ450FX or YZ450F?

[Brandon37]

Im looking at upgrading my bike. currently I have a 2014 YZ450F.
I can not decide between the 2016 Yamaha YZ450FX or the YZ450F.
The bigger stator on the FX to run a light and heated grips at the same time is something i would really like and the electric start would be nice but not a must.
Would like to know what people think of the power between FX compared to the F?
preferences between the 2 transmissions?
I think the power and the extra weight could be a deal breaker?
I know the fork springs and the left foot peg needs to be changed on the FX, any other weird things?
I can buy either bike for the same price so its a tough choice.
Any input would be great
Thanks

 

[powdermuncher]

FX E start and wide ratio gearbox for better speed.

The FX seems to pull the gears without problem.

Know a couple guys that really like theres a lot.

 

[tillbuilt]

I loved the FX for the 2016 season, but they leave a little on the table compared to the F. They are a little soft on the mid range hit compared to the F. I am working now on getting the rotating mass on the crank shaft lighter to bring back the hard hitting snap I always enjoyed with the F. The F stator is large enough to run either AME heated grips or a Cyclopes 310 light. Just not both at the same time. The trans of the FX is a perfect match for me at 9-14K elevation. No problem there. I enjoy the always there easy button of the FX, even down to -10. Stay tuned to the Super Hero builds for 2017 to see how our hot rod FX build turns out. "The Hulk is getting angry"

 

[wwillf01]

Have you tried switching g to the gytr cams... One of the guys I ride with did this and man it livened it up... But he is in the same boat with the stator wanting it lightened up... Even for wheel riding...

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[jrusher]

- the fx gives up some snap, I might machine some weight off flywheel as no one carries a lightweight version for the fx, the heavy flywheel is nice though when chugging down through real tight trees
- i put a h/c psiton in my fx and had the head ported it gave me abit more punch and mid range
- i barely notice the weight difference riding compared to my F
- the E button is pretty much a must have for me especially when your in those stupid spots and you cant get at kicker
- the tall 5th is awesome for the longer trail rides my bike isnt screaming to the moon and not moving
- 2nd gear is great for most tree riding 3rd can be hard to pull on some inclines etc i didnt play with gearing last season on my Ts but this year be on the yeti so gear changes be quick an easy
just picked her up yesterday looking forward to see how my bike pulls with the yeti behind her

 

[WingNutRacing]

Yeah buddy

You boys keep up the good work!!!!!, me and my FX are surely benefitting from all of this.....


Thanks.....

Winger

 

[tube]

Killer 450FX for sale in swapmeet section...

 

[wwillf01]

One of the guys I ride with put the gytr cams and adjusted the fueling so the electric start would work... But that will give a lot of the snap back of the yz450... He is trying to do the same to the flywheel though

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[needpowder]

Killer 450FX for sale in swapmeet section...

You weren't kidding. Why would you build and sell that thing!? What are you gonna do for the rest of the season?

 

[Brandon37]

so I ended up going with a new 2016 F, just picked it up a couple days back.
The wide ratio trans is not as good as the moto trans from people i have talked to.
Engine mods for an FX was out of my price range plus doing the forks
Thanks for the input
Time to get it built

 

[tube]

Go yeti and don't look back! Yee haw. Good move on the f.
Cheers

 

[WingNutRacing]

?

What other differences really are there, besides, flywheel, stator and gearing??? Can't you remap the FX with the F map?

 

[jrusher]

What other differences really are there, besides, flywheel, stator and gearing??? Can't you remap the FX with the F map?

Yes remap helps alittle but flywheel weight takes the hit away.. I run a real lean map and lots of timing