Engine
Type	599 cc, Liquid cooled, 4 - cylinders in line
Bore x stroke (mm)	65,5 x 44,5
Compression ratio	12.4:1
Stroke	4-stroke
Valve train	DOHC
Valves per cylinder	4
Fuel system	37mm Keihin CV Downdraft Carburetors (4) w/throttle position sensor (TPS)
Ignition	Digital DC-CDI
Transmission	Chain
Gears	6 speed
Power (Hp/rpm)	120 / 13000 (crank)
Torque (Nm/rpm)	68.1 / 11500
Ultra-compact, lightweight, 599cc, DOHC, 16-valve, liquid-cooled in-line four-cylinder engine puts out 120 horsepower, which translates to an incredible 200 horsepower per liter! Specially designed, one-piece cylinder and crankcase assembly provides superior engine rigidity and light weight. Engine is a fully stressed chassis member to allow for a super-light frame design. Compact slant-block engine design uses stacked gearbox shafts to create a low center of gravity and balanced weight distribution. Four 37mm Keihin CV downdraft carburetors ensure instant throttle response all the way up to the incredible 15,500-rpm redline (CA model = 14,500-rpm). TPS monitors throttle position and adjusts ignition timing to ensure maximum muscle across the entire powerband. Lightweight forged pistons feature carburized connecting rods for superb strength and reduced reciprocating mass. Patented electroplated cylinder bores mean greater heat dissipation for consistent power delivery and reduced frictional power loss. Close-ratio 6-speed transmission delivers seamless power and maximum acceleration. Special 3-axis gearbox design stacks input/output shafts to keep overall engine size to super-compact dimensions. Compact, large-capacity, 750cc-spec clutch ensures consistent, fade-free performance. Ram Air Induction System delivers cool, high-pressure air for optimal combustion and greater horsepower at high speed. Hollow side-driven camshafts with specially designed valve lifters and computer-perfected timing helps create narrow engine width. Large-capacity 750cc-spec internal water pump and separate liquid-cooled oil cooler ensures optimal engine cooling efficiency. 4-into-2-into-1 aluminum exhaust optimizes engine performance, reduces overall weight and is tucked in high for maximum lean angle. Digital CD ignition system features an integrated "stick-type" coil/spark plug cap design that delivers hard-hitting punch across the entire rev range.