Ilmor X3

Ilmor GP

Manufacturer	Ilmor
Also called	Ilmor X³
Production	2006–2007
Class	MotoGP
Engine	800 cc four-stroke 70° V4

The X3 (stylized as the X³) is an 800 cc V4 race bike built by Ilmor Engineering to compete in the 2007 MotoGP series.

The X3 is the brainchild of Ilmor co-founder Mario Illien and former grand prix rider Eskil Suter of Suter Racing Technology (SRT). Illien used his world championship winning F1 engine experience to design the machine's V4 powerplant, with Suter, who has previously designed Kawasaki's MotoGP chassis, in charge of the twin-spar aluminum frame.