The AIR4ORCE was discontinued in October of 2013. Please read the official press release below:

OCTOBER 11, 2013
After four highly successful years on both the national and international race circuits, where the AIR4ORCE tunable intake system claimed numerous Lites Supercross wins, Lites Supercross championships as well as numerous Supercross class wins and two Supercross class championships, as well as FIM MX1 wins, Moto Tassinari has made the decision not to proceed with developing 2014 model applications of the AIR4ORCE tunable intake system effective immediately.

The AIR4ORCE was embraced by the top factory supported teams for it's performance benefits, as well as being named 'Performance Product of the Year 2012' by Transworld Motocross magazine, and receiving dozens of positive published reviews. However the lengthy time necessary for research and development to bring each application to market, combined with the ever changing chassis of modern off-road motorcycles (often requiring a complete redesign of the AIR4ORCE each year on some models), has made it impractical to continue with our current development process.

In the meantime Moto Tassinari will continue to explore manufacturing and development processes for a possible future reintroduction of the AIR4ORCE tunable intake system that will allow us to introduce new models much sooner, and at a reduced price. Moto Tassinari will also continue to offer and fully support our current AIR4ORCE tunable intake system product line.

In 2014 Moto Tassinari will also continue to support Monster Energy Kawasaki, Yoshimura Suzuki, RCH Racing Suzuki, GEICO Honda and the Troy Lee Designs/Honda teams. Our reason for doing so is twofold. First, we want to keep exposure of the AIR4ORCE product line to aid in selling remaining inventory. Second, we will continue to gain valuable feedback from the best tuners and riders in the world to help with possible AIR4ORCE product development in the future.

All remaining AIR4ORCE inventory will be sold customer direct via our online web store beginning December 1, 2013.

Thank you all for supporting the AIR4ORCE,
—Moto Tassinari