400ex bore sizes

[Nettles 400ex]

hello im just wondering what all the bore sizes are for a 400ex. Just something i want to know.

Thanks

[powerbomb400]

Look at Wiseco's website and it has a chart of ??mm=??cc'. Type in you are looking at Honda 400ex piston's.

[Stickman400]

86mm=407cc
87mm=416cc
88mm=426cc
89mm=440cc

All of these are not exact though, it's gunna be a few cc's less than what I posted since the engine isn't truely a 400cc but a 397cc.

[Wheelie]

89mm is actually a 435.