Modifications/aftermarket parts:

Aftermarket lower and stiffer suspension front & rear
Modified ZX Exhaust (not shown in image)
Daytona Digital racing CDI: delimited and reprogrammed ignition curve
Digital display with speedo, odometer, fuel, RPM, lap timer etc
Turbine fan
1st generation (no emission control) carburettor
Daytona high speed 2-stage pulley
New Kevlar belt
New rollers
5000rpm clutch engage point
Air horn
Racing grips

In standard trim these Dio ZX scooters are one of the 3 fastest scooters ever out of Japan.