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DannoXYZ · July 25th, 2017, 12:37 PM

If you really want to bore it out significantly, you'll need new sleeves too. Boring out factory sleeves will leave nothing left with 65-68mm pistons. It's possible to get up to ~300cc with bigger sleeves and pistons.

July 25th, 2017, 12:37 PM	#3
DannoXYZ ninjette.org certified postwhore Name: AKA JacRyann Location: Mesa, AZ Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot. MOTY - 2018, MOTM - Nov '17	If you really want to bore it out significantly, you'll need new sleeves too. Boring out factory sleeves will leave nothing left with 65-68mm pistons. It's possible to get up to ~300cc with bigger sleeves and pistons.