300ex bore size

[Pvt. Maggot]

hello,
I'm buying a piston cylinder and head off e-bay. and i was just wondering what size it is...and what its going to make my 300...on the piston is stamped 0.50MM thanks :)

[Pvt. Maggot]

bump?

[Out_Sider]

im not sure...but i think it is bored .020 over. but dont take my word for it, i may be wrong.

[Pvt. Maggot]

bump

[dork]

.040 in. equals 1 mm, so .020 would equal .5 mm.