The new KTM 300 EXC TPI cylinder has a bore of 72mm and is fitted with the sophisticated power valve, which provides really smooth and controllable power characteristics. For the EFI application the new cylinder features two lateral domes that hold the fuel injectors supplying fuel into the rear transfer ports. The downstream injection guarantees excellent atomization of the fuel with the upstreaming air. Thus the loss of unburnt fuel is reduced for less emissions, a more efficient combustion and reduced fuel consumption. A little tube in the back of the cylinder is connected with an intake pressure sensor, which supplies pressure data to the control unit.