It may not have realized it at the time, but KTM made the ideal starting point for a race car when it produced the X-Bow. The racing-chassis specialists at Dallara who were charged with its development probably did though. And so did Reiter Engineering.

Lamborghini's longtime motorsport partner teamed up with KTM three years ago to turn the X-Bow into a GT4-class racing machine. Since then they've produced dozens of them but so have other automakers pouring into the category. This is Reiter's answer.


Comprehensively upgraded for the 2018 racing season, the KTM X-Bow GT4 has been redesigned to last longer and reduce running costs for the privateer teams that will run it. “Although we already have a GT4 vehicle that offers one of the best value for money,” says Hans Reiter, “we want to further reduce the costs for the teams and the drivers with these updates.”

A beefier Holinger transmission promises to handle over 500 lb-ft of torque and run for 62,000 miles without trouble – twice that distance for the upgraded suspension. The engine control unit, electrical system, cable harness, control panel, traction control, it's all been enhanced to run for longer, which is vital for endurance racing.


Reiter will make you one for € 152,360 (US$ 180k), but the first build slots are already sold out through February.