Piston Ring Kit 75cc For DR 1925 Kit Minarelli AM Motors Pinasco In the Lambretta sector these

In the Lambretta sector these are called "pacemakers" or "close ratios"

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Piston Ring Kit 75cc For DR 1925 Kit Minarelli AM Motors Pinasco In the Lambretta sector theseTop Performance Dr 75cc Piston Ring Kit 73. 5 cc. Standard Bore 49mm 1st Oversize 49. 5m As shown in the cylinder kit picture Fits: Liquid Cooled Models Minarelli AM 3 4 5 6 Motors and AM6 EU1. AS Fitted To: APRILIA Minarelli AM345, Extrema, MX, RS, RX, Tuono. BETA MOTOR RR ENDURO, RR MOTARD, SUPERMOTARD RR 50 LC, RK 50 CH WSM HM CRE HRD ENDURO, MOTARD HUSQVARNA CH, SM, WR. MALAGUTI XSM, XTM MBK DT, THUNDER, X LIMIT, X POWER. MOTOR HISPANIA FURIA, RX