Name what is going to be different ?
The shock will be a YZ model. Same as has been used since 2006. Valving will be model specific, but most of us will need a respring/revalve anyway.
Forks will be SSS, same as been used since 2008. Valving will be model specific, but most of us will need a respring/revalve anyway.
The reverse cylinder engine, if they use it, is standard YZ fare, tuned differently. But the current WR engine, especially with various YZ parts, isn't lacking at all.
The frame will be based on YZ bike, maybe the 250F. Not much change there.
18 inch rear wheel. Check.
The rest of the bits and pieces are standard Yamaha fare. And Yamaha will be lucky to get the 450FX has light as my WR is. My WR is about the same weight as the YZ250FX and the YZ450FX will be heavier.
I am talking about the new YZFX starter system AND MOTOR, the cases and harness and all included parts, are 11lbs lighter than the old WR250 version motor
I didn't phrase it right
Then you have a good point, especially since the YZFX is fuel injected, which usually adds a couple pounds. If you are telling me that the engine package on a YZ450FX would be 11 pounds lighter than the engine package on our WR450Fs, I am extremely interested !
Edited by MidlifeCrisisGuy, November 02, 2014 - 08:02 PM.