With its 162hp and colossal 94lb-ft (127.5Nm) of torque, the Diavel Testastretta 11° engine is all about authentic Ducati Desmodromic performance.

The revised intake and exhaust ports combined with radical adjustment of the cam timing have enabled Ducati to achieve a fantastic torque curve at low rpm, which remains strong through a wider rev-range. The increase in bottom-end torque is managed by Ducati’s Ride-by-Wire (RbW) system to considerably enhance the Diavel’s effortless ridability, while ensuring plenty of power remains on tap for high-rpm riding.

For an engine with brute power on tap when needed and smooth, user-friendliness available for an effortless and comfortable ride, Ducati revised the configuration of the cam timing with particular focus on the valve overlap angle. The overlap angle is defined as the interval of crankshaft rotation, measured in degrees, during which both the intake and exhaust valves are open at the same time. This overlap occurs between the end of the exhaust stroke and the start of the intake stroke. High performance engines, which are subject to compromising smoothness for extreme power delivery, use high values of this parameter in order to benefit from the pressure waves to improve engine performance by maximising volumetric efficiency.

On the Testastretta 11° engine, this angle has been reduced from 41°, used in the Testastretta Evoluzione engine which powers the 1198, to 11°. As a result, the fresh inlet charge flow is less compromised by the exiting exhaust gases, resulting in a much smoother combustion in addition to improved fuel economy and lower exhaust emissions.

The massive 58mm (2.28in) section exhaust headers lead the 2-1-2 system through power-enhancing equal lengths that enable the Diavel’s efficient power delivery. The engine management system dedicates a lambda probe to each header, providing precise fueling via a large airbox, while the stylish cannon-style, vertically stacked silencers carry catalytic converters to provide Euro 3 conformity and electronically controlled mid-section valve optimises exhaust pressures throughout the rev-range.

Twin lateral radiators - positioned on either side of the bike - cool the Diavel Testastretta 11° engine. This unique feature combines with a new 64mm water pump impeller to increase flow rate by 35% at high rpm, enabling highly efficient cooling from the stylish air ducts.

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