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Cast iron design with 2 ring piston makes for a reliable cylinder
instead of the rollers moving longitudinally
Comes with Piston
These were notorious for cracking so be careful with these new old stock ones too
The piston features 2 rings and lubrication holes to keep the exhaust bridge happy
HPI Mini Rotor CDI for Minarelli V1 505-1d Cast iron design with 2HPI mini rotor CDI for Minarelli V1. Unlike the internal rotor HPI, this setup comes with a built in 60w lighting coil. A good lighting coil, ignition curve, and you can adjust the stator without pulling the flywheel. Its a pretty great setup. We recommend using a resistor boot or resistor plug as well as a voltage regulator for your lights. Stator color may vary. Usually they are red, black, or gold. You will need a 27mm x 1mm left hand thread puller
