I can't wait for the hipo 690 piston.
My bike is getting up there in miles and though it is running great, at some point soon I am going to tear it down and do a top end for it.
I really don't see riders tearing apart there engines and doing a 450/690 swap as some have mentioned earlier in this thread. Like riding to a race and them switching.
It entails splitting the cases to change the crank and rod. I don't see that happening from a privateer in a bivouac. I could see and additional engine being used though and switching a complete unit.
Now where to find another engine???
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