-New cylinder: improves performance in terms of torque and power output throughout the rev range while keeping the response perfectly linear.
-Rounded piston and new cylinder head profile: (300cc only): together with the new cylinder, provides smoother engine performance while providing better traction. 
-Crankshaft: redesigned configuration that is matched to the new cylinder which increases stiffness and provides less engine vibration.
-New connecting rod: revised lower bearing area to improve durability.
-New power valve timing: different design of the power valve ramps to better adapt to the new primary drive ratio, ensuring better power delivery.
-New combustion chamber (250cc only):provides a higher compression ratio which has increased the power output.
-Elimination of the kick-start: the incredible work put into making the electric starter more reliable has allowed the kick-start lever to be removed, significantly reducing weight. Given the engine design, a kick-start can still be ordered as an option.
-New gear change system: updated star wheel and detent mechanism improves the precision of the transmission eliminating any possible uncertainties when shifting gears.
-New air filter box: intense testing was done on the 2-stroke engine timing advance curves to optimize output enabling the introduction of a new air filter box.