Honda CRF150R Engine:
Engine Type 149cc liquid-cooled single-cylinder four stroke
Bore and Stroke 66mm x 43.7mm
Compression Ratio 11.7:1
Valve Train Unicam, four-valve; steel 26mm intake, 22.5mm exhaust
Carburetion Keihin 32mm flat slide with throttle position sensor (TPS)
Ignition Solid-state CD with electronic advance