EFI SR400 /SR500


Board tracker

"Bringing new technology and design"


This concept bike   would be based on the “new” Yamaha EFI SR400  a sort of rebirth of this vintage, but still very popular motorcycle.

 Design is reduced to its essential elements: the bare necessities such as the two large wheels,  a motor and a bar to hold on to.


The combo seat/tank is hydroformed from 2  titanium sheets welded together to act as a beam girder for the frame. It has perimeter disk brakes front and rear and a hard tail frame. The carbon girder fork is inspired from a VTT Fournales fork more commonly found on mountain bikes. The underslung exhaust is hydroformed and has a large volume for efficiency.

 text from Paul Crowe "The knee slider"