2015 YZ450 Throttle return spring

Hi there

Is it possible to upgrade a 2014 YZ450F with the new lighter throttle return spring of the 2015 model?

I didn't find a part number for the new spring..


I looked too couldn't find a spring... looks like you would have to buy the throttle body or send yours off to injectioneering.

Let me know if you find anything.

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