Piston size and dispalcement of the 400ex

[400exBro]

According to WB a 85 mm is std, 86 mm is a 406cc, 87 is a 416..
But what is 426 440 and 465??? these may be wrong but thats what it says on WB web page



Also should i get WB all round cam or WB race/Track cam???
thanks
400exBro
Just wanted to let you know

[Chef]

426 is 88mm im pretty sure,
i know for sure that 440 is 89 mm
and 465 is 92mm

[max400EX]

BORES

Stock 85mm - 397
.040 - 86mm - 406
.080 - 87mm - 416
.120 - 88mm - 426
.160 - 89mm - 435 (440 Kit)