2024 Kawasaki Ninja ZX-4RR

2024 Kawasaki Ninja ZX-4RR Engine type Liquid-cooled, 4-stroke In-Line Four Displacement 399 cm³ Bore x stroke 57 x 39.1 mm Compression ratio 12.3:1 Valve system DOHC, 16 valves Fuel system Fuel Injection: Ø 34 mm x 4 Starting System Electric Lubrication Forced lubrication, wet sump Performance & Transmission Maximum power 57 kW {77 PS} / 14,500 rpm CO2 emission TBA g/km Maximum torque 39 N•m {4 kgf•m} / 13,000 rpm Transmission 6-speed Final drive Sealed chain Primary Reduction Ratio (69/34) Gear Ratios 1st (41/14) Gear Ratios 2nd (37/18) Gear Ratios 3rd (34/21) Gear Ratios 4th (32/24) Gear Ratios 5th (30/26) Gear Ratios 6th (28/27) Final reduction ratio