Are you going racing? If the answer is yes, are you that competitive that it makes a difference? If so, measure the barrels and choose the piston best suited to the barrel and race conditions.

If the answer is no to either of the above, then go by the A|B, B|#, C|D Honda guidelines.
_________________
Andy.
NSR-WORLD.COM

Please keep all responses to Forum posts on the Forum so that others may benefit.

Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.

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