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Posted

I have a 421 serval now and starting to think of my next motor. Looking at a 521 10 mil super serval. Would this be considered a big bore and require big bore exhaust? Does these cylinders use the same heads and intakes?

 

Thanks.

Posted

I have a 421 serval now and starting to think of my next motor. Looking at a 521 10 mil super serval. Would this be considered a big bore and require big bore exhaust? Does these cylinders use the same heads and intakes?

 

Thanks.

521 super uses a different head and pipes. If you want it RIGHT,you can't just buy the parts off the "shelf" . To properly setup a super, the domes must be spot on and proper pipe selection is critical. I suggest having a builder that is extremely familiar with supers to do it.

A little FYI,,, all Supers are not the same. A builder familiar with them can fill you in on the rest.

Posted (edited)

I've got a 10mil super serval. It cost a good bit more than the average 4mil 421 serval. Call up redline and you can see what's up with either build. For what I do, a 421 would of been fine. Not sure why I went with the big Mota. I still haven't finished my build yet.

Edited by RagunCajun
Posted

Id prob only sell it for $7000 or whatever it cost to replace new. Otherwise, I'll. Just finish the bike when work picks back up. It will sit until then. It's not like it will go bad.

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