The 2015 version of the VORTEX with some updates will be available in middle of january.

1 - the burn room has been modified to advance the ignition timing.
2 - the conrod has been changed completely with a different stroke length and a single copper bushing insert.
3 - the sleeve has been modified to change the intake and exhaust timing
to increase the high speed limit. The stroke of piston has been changed to
increase life expectancy and to increase the oil retention ability on the surface
of the sleeve and the micro-grooves are increased for an additional oil content.
4 - to maintain a higher degree of stability of the carburetor, the High Speed
Needle has been modified.
5 - the cooling head color has been slightly modified.