Honda CRF450R Specs:
Engine Type: 449cc liquid-cooled single-cylinder four-stroke
Bore and Stroke: 96mm x 62.1mm                                                        
Compression ratio: 12.0:1
Valve Train: Unicam, four-valve, 36mm intake, titanium; 30mm exhaust, steel
Induction: Carburetor, Keihin 41mm flat slide
Ignition: CD with electronic advance a three-gear-position