Harley-Davidson Sportster 1200 Nightster XL1200N SpecificationsEngine Engine3 Air-cooled, Evolution® Valves Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters; two valves per cylinder Bore x Stroke 3.50 in. x 3.81 in.(88.90 mm x 96.82 mm) Displacement3 73.30 cu. in. (1200 cc) Compression Ratio 9.7:1 Fuel System4 Electronic Sequential Port Fuel Injection (
