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This engine must have very few miles on it
and reliable design
You can likely use this on other AM6 powered bikes but it is designed to fit and clear the RS1 frame
Match your case for best performance
Nice little circuit exhaust that would be perfect for stock or mild setups
Derbi Piston Port Metra Kit 38mm "50cc" Cylinder Kit bp6es This engine must have veryNew old stock, 38mm "50cc" Metra Kit for Derbi mopeds with the Piston Port engine. Cast iron design with 2 ring piston makes for a reliable cylinder. Comes with cylinder, piston, rings, pin clips, and gasket kit. These are vintage inventory. They may not have that brand new shine like one made today.
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