87.5 mm piston + 400ex = ? [Archive]

derekhonda

07-25-2005, 12:25 PM

What size do i got? 440?

FoxRacing81

07-25-2005, 12:31 PM

Originally posted by derekhonda
What size do i got? 440?

421? 88mm is 426 and 87mm is 416...I guess somewhere inbetween there.

brian-250

07-25-2005, 01:33 PM

isnt that what johns 400 is? 87.5?

it would prolly be the 421 like he said.

44oEX

07-25-2005, 04:33 PM

420.7cc to be exact lol

TC426EX

07-25-2005, 06:25 PM

what an odd bore

derekhonda

07-26-2005, 10:46 AM

Originally posted by TC426EX
what an odd bore

Yeah and you ought to see the shape of the piston :eek: