Right well, the motor has a lot of head work (porting/polishing, valves, springs, cam), a higher compression piston, 650 crank/rod (instead of 630), a small mx stator & flywheel, E-Start removed, some ratio changes in the gear box and an STM slipper clutch. I run it with an Akropvic race system, and a highflow DNA airfilter. The fuel/air ratio is setup on the dyno.
Compared to a standard 650, it makes alot more power and torque obviousley, but its also loads smoother off the bottom end and revs alot more freely too.