Buell XB9S “FLASH” – the first of the F.A.S.T.


The Saviour of the Universe. By Hillbilly-Motors.

The FLASH was special in many ways. Not only did it have the M-Tek Stage I cylinder heads and the first in a series of limited paint schemes, but its was also the debut bike of the F.A.S.T. system.

So what is F.A.S.T.? And more importantly – does it maker you FASTer?

Full Air Supply Technology – abbreviated to F.A.S.T. – was developed by Hillbilly-Motors together with a range of different tank covers sporting different air inlets both in glass fibre and carbon fibre.

Hillbilly-Motors together with M-Tek were able to find as many as 7 “real” horsepower – meaning in comparable runs, under comparable temperature and humidity conditions on a proper dyno.

The general idea of the F.A.S.T. is not only to get more air into the engine, but to shield this air as long as possible from the engine’s heat. The beauty of this system is, that you can still use the stock tank cover if you like – or upgrade to one with air inlets. These special covers can still be found in a variety of different looks, mostly glass fibre. But if you get really lucky or have saved “Your Precious” for so many years, you might even fins one in carbon!

The F.A.S.T. kit was highly successful back then and now in 2021, we’re considering to give it a re-run. Contact us if you’re interested!

In 2003, the FLASH was even raced at the Buell Trackday Cadwell in England, see pictures below:



For those who don’t know: before we moved to Sweden, we used to own Hillbilly-Motors – the single largest supplier of Buell after market parts in the world. The company was sold in 2006, the same year we moved from Germany to Sweden. We decided to collect all official project bikes here as well – just for fun really!