bluemax89
Junior Member
Agreed, bore & Stroke are the same but the compression ratios are different, don't know if it will matter? Good luck with it, looking forward to hearing more :thumbup:
01-05 R6
Bore X Stroke: 65.5 X 44.5 mm (2.58 X 1.75 in)
Compression Ratio: 12.40 : 1
06-07 FZ6
Bore X Stroke: 65.5 X 44.5 mm (2.58 X 1.75 in)
Compression Ratio: 12.20 : 1
compression ratio is different due to the pistons. They are the same size just different dome shapes.