This site has been created so that I can calculate the displacement of a cylinder on the basis of bore and stroke specifications.

I'll list a number of bore and stroke specs below for the sake of convenience:

• Hyosung GV250: 57x48.8
• Harley Davidson Iron 883: 76.2x96.8
• Honda VT750S: 79x76
• 1969 Honda CB750 Four: 61x63
• 1963 Triumph 650 Trophy: 71x82
• 1979 Triumph 750 Bonneville: 76x82
• 2013 Triumph 865 Speedmaster: 90x68
• 2015 Harley Davidson FXDB: 98.4x111.1