KTM developed the X-Bow in collaboration with Kiska Design, Audi, and Dallara. The X-Bow uses a turbocharged four-cylinder 2.0 litre Audi engine. The 2008 model produces hp (kW/PS) at 5500 rpm and newton metres (lb·ft) of torque between 2000 and 5500 rpm. and can accelerate from 0-62 mph (100 km/h) in 3.9 seconds. Its top speed is 217 km/h (134.9 mph). In the 2011 X-Bow R model the Audi engine is further tuned to produce hp (kW/PS) and newton metres (lb·ft) of torque at 3300 rpm.