Bore size?

[mario_89]

Hey guys, I'm in the process of rebuilding my top end. The piston froze up on me a couple of weeks ago. I want to bore it out since I need to replace the piston anyways. I'm not sure how much to Bore it out. Any suggestions?

FMF Fatty & Dual Core Silencer
28mm Mikuni
K & N Air Filter
No airbox lid
Reed Spacers
260 Main Jet
35 Pilot Jet

 

[98blaster]

only bore out as big as you need to to correct the scored cylinder