Stock bore size 64mm
Max 66.5mm
Stock bore is 42mm.
250
what is the stock bore size for a 2001 honda cr 250r
52mm
90mm stock bore size on my 2002 foreman 450cc
The bore and stroke is---3.740 bore and 3.480 stroke. STOCK 305
78.5 MM
89.0 mm is the stock bore for the 1989 Honda cr500r.
3.740 x 3.480 / inches. Stock factory bore.
Stock 145
230
the bore size is 66.00 mm or 43 inches ? i think its the 1st , try looking at the sky then the ground before you try go go swiming