Scooterotica

Whats the difference between an A grade piston and a B grade piston, ive seen this term mentioned on the forum but unsure what it actually means.

its not that an A is better than a B it just refers to the piston tollerence to a nicasil lined barel

RICSPEED wrote:its not that an A is better than a B it just refers to the piston tollerence to a nicasil lined barel

thanks for that Ricspeed.