The PK flywheel with 19 mm cone is the simplest basis for converting V50/PV/ET3 models to a trouble-free and reliable 12 V ignition. With a suitable electric ignition base plate, voltage regulator, ignition coil and conversion wiring loom, this conversion is easy without having to replace the crankshaft. For the PK50-125/S models of the first series, this flywheel is also a frequently needed spare part. For tuned models we recommend the PK flywheel with 20 mm cone, which is standard on the PK50-125 2°/S 2°/XL/XL2 models. Then, for the conversion to a 12 V ignition, the matching crankshaft with a thicker cone is required, which, however, also withstands tuning loads well.

OEM numbers (for comparisons): 1984533 - 179450 (PIAGGIO out of production) (PIAGGIO)