Type: 4-stroke, air-cooled, OHC Bore x Stroke: 94.0 mm (3.701 in) x 94.0 mm (3.701 in) Compression Ratio: 8.5 : 1 Fuel System: MIKUNI BS40, single Lubrication: Wet sump Ignition: Electronic ignition (Transistorized) Transmission: 5-speed constant mesh Final Drive: Belt drive Chassis and Dimensions Suspension Front: Telescopic, coil spring, oil damped Suspension Rear: Swingarm type, coil spring, oil damped Brakes Front: Disc brake Brakes Rear: Drum brake