Re: Re: Rotax struggling above 10,000 rpm

The “new” style air box filter is exactly the same shape as the old style. The difference is the height location of the filter portion. The “new” style fits in the chassis differently and allows more clearance. That said, you can bend the air box bracket and rotate the boot to angle the air box towards the right side of the kart to give more room for the seat. I have been able to get a XXXL seat in the kart and still get the air box to clear.