The straight shot fuel rail just got better. In 2 years there have been over 1000 sold, even to the KTM factory themselves and the US military uses them.  The newest veriosn fits with the stock hoses and hardware, lowering it's price. It gets Fuel to the injector with no hesitation, everytime you crack the throttle. You can see how the stock Fuel Rail ( Black plastic ), shoots the incoming Fuel down and away from the injector, causing interuptions and hesitations in throttle responnse. Ours ( aluminum ) shoots the Fuel stream directy into the injectors pick up hole. Throttle response and get up and go are improved dramitically. Changes in minutes with throttle body still on bike. Fits all 2017-2022  250-501 Gas Gas