Pistion ?

[hondaracing0144]

i was thinking about getting pistions put in my 300ex but is the .20 over and the 297cc the same bore? and can i do it with a stock engine well im running k@n with outerwear and a 14 front tooth sprocket can anyone help

[JParisi48]

i think .80 over is a 297cc and you might wanna get an exhaust and maybe a 400ex carb, it will help alot if you get it bored

[Black300Ex]

.80 over is 330cc and .20 over is 297cc

[250xsupertrapp]

no an 80mm piston is 330cc

[aberg123x]

a 76mm piston makes your 300ex a 297cc which is .80 over. i am doing a complete top end on an 06 and im using the 76mm JE 11.5:1 compression to mke it a tru 300.