Model: CRF250X Engine Type: 249cc liquid-cooled single-cylinderfour-stroke Bore and Stroke: 78mm x 52.2mm Compression ratio: 12.9:1 Valve Train: Unicam, four-valve; 31mm intake valve; 26mm exhaust valve Induction: Keihin 37mm flat-slide carburetor with Throttle Position Sensor (TPS) Ignition: CD...

Model: CRF450X Engine Type: 449cc liquid-cooled single-cylinder four-stroke Bore and Stroke: 96mm x 62mm Compression ratio: 12.0:1 Valve Train: Unicam, four-valve; 35mm intake valve; 30mm exhaust valve Induction: Keihin 40mm flat-slide carburetor with Throttle Position Sensor (TPS) Ignition: CD...

Specifications Model: CRF150RB-Expert / CRF150R Engine Type: 149cc liquid-cooled single-cylinder four-stroke Bore and Stroke: 66mm x 43.7mm Compression Ratio: 11.7:1 Carburetion: Keihin 32mm flat slide with throttle position sensor (TPS) Ignition: Solid-state CD with electronic advance Transmission:...

Model: CRF250R Engine Type: 249cc liquid-cooled single-cylinder four-stroke Bore and Stroke: 76.8mm x 53.8mm Compression ratio: 13.2:1 Valve Train: Unicam, four-valve; 30.5mm intake, titanium; 25mm exhaust, steel Induction: PGM-FI, 50mm throttle body Ignition: Full transistor with electronic...

CRF450R : The Undisputed Open-Class Champ Model: CRF450R 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: Programmed Fuel Injection...