Stefan Merriman's 2013 WR450F race bike

http://transmoto.com.au/bike-dissected-stefan-merrimans-2013-yamaha-wr450f/

 

"For events held entirely in these trickier conditions, a heavier flywheel weight is used to help the rear Dunlop find traction."

 

So much for reducing reciprocating mass to make the bike feel lighter !

 

Flywheel weight is only part of the equation there. The piston, con rod and crank all play a part as well. Bigger displacement means more weight for all those components, and more reciprocating mass affecting handling.

Bike looks good!

Good find - interesting to me that they went with the stock front brake. And I guess bark busters and radiator guards are for the weak!

How do I get that carbon fiber tank!

You would probably have to get rid of the battery to run that lower subframe?  That ECU looks cool too, I never seen that one before.

Midlifecrisisguy doesn't have a battery/starter/etc... he might be able to do it.

Pfftttt....

 

Mine's tricker than that...for a leaky carb version...

That's not going to work with the 2012-2015 bikes as there fuel injected.

 

Vortex makes an ECU for whatever you want.

 

You clicked on the Ignition only link, not the ECU link

 

http://www.vortexcdi.com/product_generic.php?cid=3

I've seen Stefan race Six Days before. It's insane what he and the other top Euros can do on a bike in the nastiest conditions that are nearly impossible to walk let alone race on. That bike is awesome!

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